ORIGINAL_ARTICLE
EXPRESSION OF VASCULAR ENDOTHELIAL GROWTH FACTOR (VEGF) IN HEMANGIOMAS AND INTERMEDIATE VASCULAR LESIONS
between hemangiomas and angiosarcomas. Angiogenesis is characterized by development of new blood vessels through the division or migration of pre-existing vasculature. VEGF deserves attention because it is associated with the stimulation of endothelial cell proliferation and vascular permeability and promotion of angiogenesis. OBJECTIVES: to evaluate the immunohistochemical expression of vascular endothelial growth factor (VEGF) in pyogenic granulomas, hemangiomas and intermediate vascular tumors (hemangioendotheliomas, hemangiopericytomas) and to highlight the possible role of VEGF in diagnosis of each of these tumors MATERIALS AND METHODS: Immunohistochemical analysis of 20 cases of vascular and intermediate vascular tumors, with one section from each specimen (20 sections for VEGF antibody) and 5 control cases. Immunohistochemical staining was performed using a Labeled Strept-Avidin Biotin method (LSAB). RESULTS: Normal gingival tissue showed mild immunoreactivity for VEGF. All the examined cases showed strong positive expression for VEGF antibody, with different intensities. CONCLUSIONS: The marker VEGF was overexpressed in vascular and intermediate vascular tumors than normal gingival tissue
https://adjalexu.journals.ekb.eg/article_57615_38dcd189556270bd85a83fbe48fb07a4.pdf
2018-08-01
1
6
10.21608/adjalexu.2018.57615
Vascular tumors
Intermediate vascular tumors
Immunohistochemistry
VEGF
Ahmed E
Zyton
1
Master student of Oral Pathology, Faculty of Dentistry-Alexandria University
AUTHOR
Hanaa S
Raslan
2
Professor of Oral Pathology Department, Faculty of Dentistry-Alexandria University
AUTHOR
Omneya R
Ramadan
3
Lecturer of Oral Pathology Department, Faculty of Dentistry-Alexandria University
AUTHOR
Azza Z
Abdel Rahman
4
Professor of Oral Medicine Department, Faculty of Dentistry-Alexandria University
AUTHOR
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5. Cohen MM Jr. Vasculogenesis, angiogenesis, hemangiomas, and vascular malformations. Am J Med Genet 2002; 108: 265-74.
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9. Zheng S, Han MY, Xiao ZX, Peng JP, Dong Q. Clinical significance of vascular endothelial growth factor expression and neovascularization in colorectal carcinoma. World J Gastroenterol 2003; 9: 1227-30.
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10. Bancroft JD, Stevens A. theory and practice of histological techniques. 3th ed. Churchill livingstone inc. 1990.
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11. Grizzle WE. Models of fiation and tissue processing. Biotech Histochem 2009; 84: 185-93
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12. Brouillard P, Vikkula M. Vascular malformations: localized defects in vascular morphogenesis. Clin Genet 2003; 63: 340.
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13. Saghafi S, Amoueian S, Montazer M, Bostan R. Assessment of VEGF, CD-31 and Ki-67 in Oral Pyogenic Granuloma: A Comparison with Hemangioma and Inflammatory Gingivitis. Iranian J Basic Med Sci 2011; 14: 185-9.
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14. Jafarzaddeh H, Sanatkhani M, Mohtasham N. Oral pyogenic granuloma: a review. J Oral Sci 2006; 48: 167-75.
14
15. Toida M, Hasegawa T, Watanabe F, Kato K, Makita H, Fujitsuka H, et al. Lobular capillary hemangioma of the oral mucosa: clinicopathological study of 43 cases with a special reference to immunohistochemical characterization of the vascular elements. Pathol Int 2003; 53: 1-7.
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16. Reis-Filho JS, Paiva ME, Lopes JM. Congenital composite hemangioendothelioma: case report and reappraisal of the hemangioendothelioma spectrum. J Cutan Pathol 2002; 29: 226-31.
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17. Bhutia O, Roychoudhury A. Hemangiopericytoma of mandible. J Oral Maxillofac Pathol 2008; 12: 26-8.
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18. Rizwanulla T, Koirala B, Shivalal Sharma S, Adhikari L. Klebsiella ozaenae Cholecystitis. Am J Med Sci 2010; 8: 196-8.
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19. Zha-jun FU, Chun-ming LI, Wang T, Jiang Z, Zhao-Chen FU. Vascular endothelial growth factor expression and pathological changes in the local tissue of facial hemangiomas following injections with pure alcohol. Oncol Lett 2015; 9: 1099-103.
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20. Quante M, Patel NK, Hill S, Merchant W, Courtauld E, Newman P, et al. Epithelioid hemangioendothelioma presenting in the skin: a clinicopathologic study of eight cases. Am J Dermatopathol 1998; 20: 541-6.
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21. Carvalho JR, Haddad L, Leonhardt FD, Filho MFM, Santos RO, Cervantes O, et al. Hemangiopericitoma maligno de cabeça e pescoço em uma criança: relato de caso. São Paulo Med J 2004; 122: 223-6.
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22. Hasina R, Lingen MW. Angiogenesis and oral cancer. J Dent Educ 2001; 65: 1282-90. 23. Kumar V, Abbas AK, Fausto N. Robbins and Cotran Pathologic basis of disease. 7th ed. Philadelphia; Saunders: Elsevier Inc, 2004. RB111.R62.
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24. Hand JL, Frieden IJ. Vascular birthmarks of infancy: Resolving nosologic confusion. Am J Med Genet 2002; 108: 257-264 .
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25. Yuan K, Wing TJ, Lin MT. The detection and comparison of angiogenesis-associated factors in pyogenic granuloma by immunohistochemistry. J Periodontol 2000; 71: 701-9.
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26. Ou JM, Yu ZY, Qiu MK, Dai YX, Dong Q, Shen J, et al. Knockdown of VEGFR2 inhibits proliferation and induces apoptosis in hemangioma derived endothelial cell. Eur J Histochem 2014; 58: 2263.
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27. Miettinen M, Rikala M, Rysz J. VEGF receptor2. As marker for malignant vascular tumors and mesothelioma. Immunohistochemical study of 262 vascular endothelial and 1640 nonvascular tumors. Am J Surg Pathol 2012: 35: 629-39.
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28. Zhang L, Lin X, Wang W, Dong J, Qi Z, Hu Q. Circulating level of vascular endothelial growth factor in differentiating hemangioma from vascular malformation patients. Plast Reconstr Surg 2005; 116: 200-4.
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29. Jinnin M, Medici D, Park L, Limaye N, Liu Y, Boscolo E, et al. Uppressed NFAT-dependent VEGFR1 expression and constitutive VEGFR2 signaling in infantile hemangioma. Nat Med 2008; 14: 1236-46.
28
30. Dietzmann K, von Bossanyi P, Warich-Kirches M, Kirches E. Immuno-histochemical detection of vascular growth factors in angiomatous and atypical meningiomas, as well as hemangiopericytomas. Pathol Res Pract 1997; 193: 503-10.
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31. Gengler C, Guillou L. Solitary fibrous tumour and haemangiopericytoma: evolution of a concept. Histopathology 2006; 48: 63-74.
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32. Hatva E, Bohling T, Jaaskelainen J, Paetau A, Haltia M, Volk B, et al. Vascular growth factors and receptors in capillary hemangioblastomas and hemangiopericytomas. Am J Pathol 1996; 148: 763-75.
31
33. Vermeulen PB, Gasparini G, Foks SB, Colpaert C, Marson LP, Gion M, et al. Second international consensus on the methodology and criteria of evaluation of angiogenesis quantification in solid human tumours. Eur J Cancer 2002; 38: 1564-79.
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34. Dyduch G, Okoń K, Mierzyński W. Benign vascular proliferations--an immune-histochemical and comparative study. Pol J Pathol 2004; 55: 59-64. 35. Hasan J, Byers R, Jayson GC. Intra-tumoural microvessel density in human solid tumors. Br J Cancer 2002; 86: 1566-77.
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36. Pakos EE, Goussia AC, Tsekeris PG, Papachristou DJ, Stefanou D, Agnantis NJ. Expression of vascular endothelial growth factor and its receptor. KDR/Flk-1, in soft tissue sarcomas. Anticancer Res 2005; 25: 3591- 6.
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37. Woessner RD, Wright PS, Loudy DE, Wallace CD, Montgomery LR, Nestok BR. Microautoradiographic quantitation of vascular endothelial growth factor mRNA levels in human prostate specimens containing normal and neoplastic epithelium. Exp Mol Pathol 1998; 65: 37-52.
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38. Tae K, El-Naggar AK, Yoo E, Feng L, Lee JJ, Hong WK, et al. Expression of vascular endothelial growth factor and microvessel density in head and neck tumorigenesis. Clin Cancer Res 2000; 6: 2821-8.
36
ORIGINAL_ARTICLE
REVASCULARIZATION IN MATURE PERMANENT TEETH WITH NECROTIC PULP AND APICAL PERIODONTITIS: CASE SERIES
INTRODUCTION: Revascularization procedures have been limited to immature teeth but application to mature teeth should be clinically investigated as an alternative to conventional root canal treatment. The translation of regenerative endodontic procedures into treating mature teeth is challenging and depends on efficient root canal disinfection, proper size of the apical foramen, the availability and delivery of stem cells into the root canal system. OBJECTIVES: Evaluation of revascularization in mature teeth after enlargement of the apical foramen to size 35 K-file. MATERIALS AND METHODS: Three necrotic incisors with mature roots and apical periodontitis in three patients ranging from 20–30 years old were treated by revascularization procedures. Access opening was performed. The canal was mechanically instrumented to the radiographic apex. The apical foramen was enlarged with a size 35 K-file. Triple antibiotic paste (0.1 mg/ml) was applied in the canal using a syringe. After three weeks, the medication was removed with 20 ml of 1.5% sodium hypochlorite followed by final irrigation with 20 ml of 17% EDTA. Bleeding was induced in the root canal and mineral trioxide aggregate (MTA) was placed approximately 3-4 mm below the CEJ. The tooth was restored with a layer of glass ionomer followed by composite resin. The patient was scheduled for follow up and evaluation of healing after 3 months, 6 months and 9 months. Resolution of apical periodontitis and regression of clinical signs and symptoms were observed during the follow up periods. RESULTS: After a follow-up period of 9 months, the three teeth demonstrated radiographic evidence of periapical healing with absence of clinical signs and symptoms. CONCLUSIONS: The present cases demonstrated a favorable outcome of the revascularization procedure in mature necrotic incisors with chronic apical periodontitis
https://adjalexu.journals.ekb.eg/article_57617_3c2f5f036d7a1d9c60b9de58e4ea4ad8.pdf
2018-08-01
7
12
10.21608/adjalexu.2018.57617
Mature teeth
necrotic pulp
apical periodontitis
Periapical healing
pulp tissue regeneration
Rasha A.
Abou Samra
1
MSc, Conservative Dentistry Department. Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
AUTHOR
Rania M.
El Backly
2
Lecturer of Endodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
AUTHOR
Hanaa M.
Aly
3
Professor of Oral Biology, Faculty of Dentistry, Alexandria University. Alexandria, Egypt
AUTHOR
Samir R.
Nouh
4
Professor of Veterinary Surgery, Faculty of Veterinary Medicine. Alexandria, Egypt
AUTHOR
Sybel M.
Moussa
5
Professor of Endodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
AUTHOR
1.Murray PE, Garcia-Godoy F, Hargreaves KM. Regenerative endodontics: A review of current status and a call for action. J Endod. 2007; 33: 377-90.
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2. Shah N. and Logani A. SealBio: A novel, non-obturation endodontic treatment based on concept of regeneration. J Conserv Dent. 2012; 15: 328-32.
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3. Saoud TM, Ricucci D, Lin LM, Gaengler P. Regeneration and Repair in Endodontics—A Special Issue of the Regenerative Endodontics—A New Era in Clinical Endodontics. Dent. J. 2016; 4: 1-15.
3
4.Trope M. Regenerative Potential of Dental Pulp. J Endod. 2008; 34: 13-17.
4
5. Gupta P, Sneha S, Shetty H. Regenerative Endodontics: An Evidence Based Review. J Cont Med A Dent. 2015; 3: 12- 19.
5
6. Ahmed HM, Abbott PV. Discoloration potential of endodontic procedures and materials: a review. Int Endod J. 2012; 45: 883-97.
6
7. Paryani K, Kim SG. Regenerative endodontic treatment of permanent teeth after completion of root development: A Report of 2 Cases. J Endod. 2013; 39: 929–34.
7
8. Diogenes A, Henry MA, Teixeira FB, Hargreaves KM. An update on clinical regenerative endodontics. Endod Topics. 2013; 28: 2-23.
8
9.Liao J, Al Shahrani M, Al-Habib M, Tanaka T, Huang GT. Cells isolated from inflamed periapical tissue express mesenchymal stem cell markers and are highly osteogenic. J Endod. 2011; 37:1217-24.
9
10.Chrepa V, Henry MA, Daniel J, and Diogenes A. Delivery of Apical Mesenchymal Stem Cells into Root Canals of Mature Teeth. J. Dent. Res. 2015; 94: 1-7.
10
11.Galler KM, Buchalla KA, Federlin M, Eidt A, Schiefersteiner M, Schmalz G. Influence of root canal disinfections on growth factor release from dentin. J Endod. 2015; 41: 363–68.
11
12.Laureys WG, Cuvelier CA, Dermaut LR, De Pauw GA. The critical apical diameter to obtain regeneration of the pulp tissue after tooth transplantation, replantation, or regenerative endodontic treatment. J Endod. 2013; 39: 759-63.
12
13.Yang J, Yuan G, Chen Z. Pulp Regeneration: Current Approaches and Future Challenges. Front Physiol. 2016; 7: 1-8.
13
14.Vemuri S, Rkotha S, Raghunath RG, Kandregula C.R. Root canal revascularization via blood clotting in regenerative endodontics: Essentials and expectations. J Dr NTR Univ Health Sci. 2013; 2: 235-38.
14
15.Borlina SC, de Souza V, Holland R, Murata SS, GomesFilho JE, Dezan Junior E, et al. Influence of apical foramen widening and sealer on the healing of chronic periapical lesions induced in dogs’ teeth. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2010;109: 932-40
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16.Iwaya SI, Ikawa M, Kubota M. Revascularization of an immature permanent tooth with apical periodontitis and sinus tract. Dent Traumatol. 2001; 17:185-7.
16
17.Banchs F, Trope M. Revascularization of immature permanent teeth with apical periodontitis: new treatment protocol? J Endod. 2004; 30:196-200.
17
18.Lin LM, Shimizu E, Gibbs JL. Histologic and histobacteriologic observations of failed revascularization/revitalization therapy: a case report. J Endod. 2014; 40: 291-295.
18
19.Fouad AF. Microbial factors and antimicrobial strategies in dental pulp regeneration. J Endod. 2017; 43:46–50.
19
20.Galler KM, Souza RN, Federlin M, Cavender AC, Hartgerink J.D., Hecker S. Dentin Conditioning Codetermines Cell Fate in Regenerative Endodontics. J Endod. 2011; 37:1536-41.
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21.Park HB, Na Lee B, Hwang YC, Hwang IM, Oh WM, Chang HS. Treatment of non-vital immature teeth with amoxicillin-containing triple antibiotic paste resulting in apexification. Restor Dent Endod. 2015; 40:322-27.
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22.Ruparel NB, Teixeira FB, Ferraz CC, Diogenes A. Direct Effect of Intracanal Medicaments on Survival of Stem Cells of the Apical Papilla. J Endod. 2012; 38:1-4.
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23.Sabrah AH, Yassen GH, Wai CL, Goebel WS, Gregory RL, Platt JF. The effect of diluted triple and double antibiotic pastes on dental pulp stem cells and established Enterococcus faecalis biofilm. Clin Oral Invest. 2015; 19:2059–66.
23
24.Althumairy RI, Teixeira FB, Diogenes A. Effect of Dentin Conditioning with Intracanal Medicaments on Survival of Stem Cells of Apical Papilla. J Endod. 2014; 40: 521–25.
24
25.Reyhani MF, Rahimi S, Fathi Z, Shakouie S, Milani AS, Barhaghi MH, Shokri J. Evaluation of Antimicrobial Effects of Different Concentrations of Triple Antibiotic Paste on Mature Biofilm of Enterococcus faecalis. JODDD. 2015; 9: 138-143.
25
26.AAE Clinical Considerations for a Regenerative Procedure. Revised 6-8-2016. (Internet). Available at: http://www.aae.org/. Accessed on 10-10-2017.
26
27.Kim JH, Kim Y, Shin SJ, Park JW. Tooth Discoloration of Immature Permanent Incisor Associated with Triple Antibiotic Therapy: A Case Report. J Endod. 2010; 36:1086-91.
27
28.Fang Y, Wang X, Zhu J, Su C, Yang Y, Meng L. Influence of apical diameter on the outcome of regenerative endodontic treatment in teeth with pulp necrosis: a review. J Endod 2017; 1–18.
28
29.Cruz EV, Kota K, Huque J, Iwaku M, Hoshino E. Penetration of propylene glycol into dentine. Int Endod J. 2002; 35: 330-6.
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30.Petrino JA, Boda K, Shambarger S. Challenges in Regenerative Endodontics: A Case Series. J Endod. 2010; 36:536- 41.
30
31.Ding RY, Cheung GS, Chen J, Yin YZ, and Wang Q. Pulp Revascularization of immature teeth with apical periodontitis: A Clinical Study. J Endod. 2009; 35:745-9.
31
32.Banchs F, Trope M. Revascularization of immature permanent teeth with apical periodontitis: new treatment protocol? J Endod. 2004; 30:196-200.
32
33.Torabinejad M, Parirokh M. Mineral trioxide aggregate: a comprehensive literature review—part II: leakage and biocompatibility investigations. J Endod 2010; 36: 190- 202.
33
34.Wang X, Thibodeau B, Trope M, Lin L, Huang G. Histologic characterization of regenerated tissue in canal space after the revitalization/revascularization procedure of immature dog teeth with apical periodontitis. J Endod. 2010; 36:56-63.
34
35.Seo BM, Miura M, Gronthos S, Bartold PM, Batouli S, Brahim J et al. Investigation of multipotent postnatal stem cells from human periodontal ligament. The Lancet. 2004; 364: 149–155.
35
36.Song M, Cao Y, Shin SJ, Shon WJ, Chugal N, Kim RH et al. Revascularization-associated intracanal calcification: Assessment of prevalence and contributing factors. J Endod .2017;43:2025–33
36
ORIGINAL_ARTICLE
CLINICAL AND RADIOGRAPHIC EVALUATION OF THE USE OF ANTERO-LATERAL WALL OF MAXILLARY SINUS FOR RECONSTRUCTION OF ORBITAL FLOOR DEFECT
INTRODUCTION: The orbital floor fracture results in disruption of bony continuity, enophtalmos, diplopia and herniation of orbital content which lead to a restriction in eye movement. Auotogenous bone graft remains as the gold standard for reconstruction of orbital floor defects, the anterolateral wall of maxillary sinus is considered as one of the donor site used in the reconstruction of the orbital floor defects, which has many advantages such as biocompatibility, strength, vascularization and has no immune reaction. In addition, its contour fits exactly the orbital floor defect, a simple harvesting technique from an intraoral donor site which minimizes its morbidity. OBJECTIVE: We aimed in the present study to evaluate the use of anterolateral wall of maxillary sinus clinically and radiographically in the reconstruction of orbital floor defects in ten patients. MATERIALS AND METHODS: All operated patients had more or less one or more signs and symptoms of orbital floor fracture as diplopia, enophthalmos, limitation of eye movements and progressive infraorbital nerve hypoesthesia. The graft harvested with peizosurgery from contralateral side of the fracture, the donor site is covered by a collagen membrane to prevent soft tissue infiltration. The harvested bone graft is adapted to the defect with no other means of fixation. The follow-up schedule was 3 days postoperatively then once weekly for two weeks and then monthly for 3 months. RESULTS: All patients with preoperative diplopia had significant improvement postoperatively. 8 patients out of 9 with preoperative ocular restriction had improvement in the postoperative follow up visits. 6 patients with preoperative enophthalmos showed improvement in the postoperative follow up visits. 7 patients with infra orbital nerve paresthesia preoperatively, all of them showed improvement in the follow up visits. CONCLUSION: The study concluded that the anterolateral wall of the maxillary sinus is a suitable material for orbital floor reconstruction, especially in cases of small to medium defects (< 3 cm2).
https://adjalexu.journals.ekb.eg/article_57889_e287c046b7ca47a7cee004b4d60d8c3f.pdf
2018-08-01
13
18
10.21608/adjalexu.2018.57889
Anterolateral wall of maxilla
autogenous graft
orbital floor reconstruction
enophtalmos
Mohamed M.
Aamer
1
LEAD_AUTHOR
Nagy E.
Hassan
2
AUTHOR
Hala R.
Ragab
3
AUTHOR
1-Beck-Broichsitter BE, Acar C, Kandzia C, Jochens A, Wiltfang J, Becker ST. Reconstruction of the orbital floor with polydioxanone: A long-term clinical survey of up to 12 years. Br J Oral Maxillofac Surg.2015; 53: 736-40.
1
2-Wang S, Xiao J, Liu L, Lin Y, Li X, Tang W, et al. Orbital floor reconstruction: a retrospective study of 21 cases. Oral Surg Oral Med Oral Pathol Oral Radiol Endod.2008; 106 (3): 324–30.
2
3-Jank S, Schuchter B, Emshoff R, Strobl H, Koehler J, Nicasi A, et al. Clinical signs of orbital wall fractures as a function of anatomic location. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2003; 96: 149-53.
3
4-Manolidis S, Weeks BH, Kirby M, Scarlett M, Hollier L. Classification and surgical management of orbital fractures: experience with 111 orbital reconstructions. J Craniofac Surg. 2002; 13: 726-37.
4
5-Tang DT, Lalonde JF, Lalonde DH. Delayed immediate surgery for orbital floor fractures: Less can be more. Can J Plast Surg. 2011; 19: 125-8.
5
6-Rai A, Datarkar A. Use of anteriolateral wall of maxilla for reconstruction of orbital floor fracture: A clinical study. Natl J Maxillofac Surg. 2013; 4: 173-6.
6
7-Avashia YJ, Sastry A, Fan KL, Mir HS, Thaller SR. Materials used for reconstruction after orbital floor fracture. J Craniofac Surg. 2012; 23: 1991-7.
7
8-Bande CR, Daware S, Lambade P, Patle B. Reconstruction of orbital floor fractures with autogenous bone graft application from anterior wall of maxillary sinus: A retrospective study. J Oral Maxillofac Surg. 2014; 14: 605-10.
8
9-Kontio R. Treatment of orbital fractures: the case for reconstruction with autogenous bone. J Oral Maxillofac Surg. 2004; 62: 863-8.
9
10-Potter JK, Malmquist M, Ellis E. Biomaterials for Reconstruction of the Internal Orbit. Oral Maxillofac Surg Clin North Am. 2012; 24: 609-27.
10
11-Ellis E, Messo E. Use of nonresorbable alloplastic implants for internal orbital reconstruction. J Oral Maxillofac Surg. 2004; 62: 873-81.
11
12-Kanno T, Sukegawa S, Takabatake K, Takahashi Y, Furuki Y. Orbital floor reconstruction in zygomatic-orbitalmaxillary fracture with a fractured maxillary sinus wall segment as useful bone graft material. J Oral Maxillofac Surgery Med Pathol. 2013; 25: 28-31.
12
13-Burnstine MA. Clinical recommendations for repair of isolated orbital floor fractures: An evidence-based analysis. Ophthalmology. 2002; 109: 1207-10.
13
14-Santosh BS, Giraddi G. Transconjunctival Preseptal Approach for Orbital Floor and Infraorbital Rim Fracture. J Maxillofac Oral Surg. 2011; 10(4):301–5.
14
15-Baino F. Biomaterials and implants for orbital floor repair. Acta Biomater. 2011; 7: 3248-66.
15
16-Cole P, Boyd V, Banerji S, Hollier LHJ. Comprehensive management of orbital fractures. Plast Reconstr Surg. 2007; 120: 57S-63S.
16
17-Copeland M, Meisner J. Maxillary antral bone grafts for repair of orbital fractures. J Craniofac Surg. 1991; 2: 18-21.
17
18-Cieślik T, Skowronek J, Cieślik M, Cieślik-Bielecka A. Bone graft application from anterior sinus maxillary wall in orbital floor reconstruction. J Craniofac Surg. 2009; 20: 512-5.
18
19-Mandel MA. Orbital floor “blowout” fractures. Reconstruction using autogenous maxillary wall bone grafts. Am J Surg. 1975; 130: 590-5.
19
20-Ellis E, Tan Y. Assessment of internal orbital reconstructions for pure blowout fractures: Cranial bone grafts versus titanium mesh. J Oral Maxillofac Surg. 2003; 61: 442-53.
20
21-Movahed R, Pinto LP, Morales-Ryan C, Allen WR, Wolford LM. Application of cranial bone grafts for reconstruction of maxillofacial deformities. Proc (Bayl Univ Med Cent). 2013; 26: 252-5.
21
22-Garg V, Giraddi GB, Roy S. Comparison of efficacy of mandible and iliac bone as autogenous bone graft for orbital floor reconstruction. J Maxillofac Oral Surg. 2015; 14: 291- 8.
22
23-Bozzuto G, Ruggieri P, Molinari A. Molecular aspects of tumor cell migration and invasion. Ann Ist Super Sanita. 2010; 46: 66-80.
23
24-Iatrou I, Theologie-Lygidakis N, Angelopoulos A. Use of membrane and bone grafts in the reconstruction of orbital fractures. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2001; 91: 281-6.
24
25-Al-Dajani M. Recent Trends in Sinus Lift Surgery and Their Clinical Implications. Clin Implant Dent Relat Res. 2016; 18: 204-12.
25
26-Stbinger S, Stricker A, Berg BI. Piezosurgery in implant dentistry. Clin Cosmet Investig Dent. 2015; 7: 115-24.
26
27-Baumann A, Burggasser G, Gauss N, Ewers R. Orbital floor reconstruction with an alloplastic resorbable polydioxanone sheet. Int J Oral Maxillofac Surg. 2002; 31: 367-73.
27
ORIGINAL_ARTICLE
THE USE OF HERBERT CANNULATED BONE SCREW IN THE TREATMENT OF MANDIBULAR FRACTURES (A CLINICAL AND RADIOGRAPHIC STUDY)
INTRODUCTION: Maxillofacial trauma is in querulous expansion by clinical and biomechanical studies in order to enhance the wellestablished techniques and to utilize new materials, all are directed towards the reduction in the immobilization period and enhancement of the rigid fixation. Since 1984 the cannulated Herbert Bone Screw (HBS) proves to be a successful mean of fracture fixation in various fields of orthopaedic surgery, nonetheless with no sufficient evidence about its performance in the maxillofacial trauma field. OBJECTIVES:The aim of the study was to evaluate clinically and radiographically the performance of HBS in the treatment of mandibular fractures. MATERIALS AND METHODS: Eleven patients with non-comminuted recent mandibular fracture were treated using Herbert bone screw. Clinical follow up was conducted after 24-hours, one week, four weeks, six weeks and twelve weeks. Also, a radiographic investigation was performed immediately postoperative and after twelve weeks to estimate the mean bone density across the fracture line. RESULTS: By the end of the follow up period, all cases showed normal lower lip sensation, normal occlusal and intercuspal relation, a statistically significant (P value < 0.001) decrease in level of pain intensity score based on the Visual Analogue Scale (VAS) and an uneventful wound healing with no records of developed infection. Mean bone density after twelve weeks showed a statistically significant (p < 0.001) increase in its values when compared to the immediately postoperative values. CONCLUSIONS: This study deduced that the use of Herbert screws results in a predictable and satisfactory outcome, in terms of achieving uneventful wound healing and high postoperative mean bone density values.
https://adjalexu.journals.ekb.eg/article_57618_d3f7cbe3de0a1d26a38b431d5a3d9abb.pdf
2018-08-01
19
25
10.21608/adjalexu.2018.57618
Mandibular fracture
Herbert Bone Screw
Cannulated Screw
Traction Osteosynthesis
Yehia A.
El-Mahallawy
1
Instructor at the Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Alexandria University, Alexandria Egypt.
AUTHOR
Sherief H
El-Ghamrawey
2
Professor of Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Alexandria University, Alexandria Egypt
AUTHOR
Mervat M.
Khalil
3
Professor of Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Alexandria University, Alexandria Egypt
AUTHOR
1. Erol B, Tanrikulu R, Görgün B. Maxillofacial Fractures. Analysis of demographic distribution and treatment in 2901patients (25-year experience). J Craniomaxillofac Surg. 2004;32:308-13.
1
2. Gandhi S, Ranganathan L, Solanki M, Mathew G. Pattern of maxillofacial fractures at a tertiary hospital in northern India: a 4-year retrospective study of 718 patients. Dental Traumatol. 2011;27:257-62.
2
3. Chrcanovic B, Abreu M, Souza L. 1,454 mandibular fractures: A 3-year study in a hospital in Belo Horizonte, Brazil. J CranioMaxillofac Surg. 2012;40:116-23.
3
4. Ghodke M, Shah S, Bhoyar S. Prevalence of mandibular fractures reported at C.S.M.S.S Dental College, Aurangabad from February 2008 to September 2009. J Int Soc Prev Community Dent. 2013;3:51-8.
4
5. Brons R, Boering G. Fractures of the mandibular body treated by stable internal fixation: a preliminary report. Journal of oral surgery (American Dental Association: 1965). 1970;28:407-15.
5
6. Hebert T, Fisher W. Management of the fractured scaphoid using a new bone screw. Plast Reconstr Surg. 1986;78:836.
6
7. Kirkpatrick L, Feeney B. A simple guide to IBM SPSS: for version 22.0. Students ed. Boston, MA: Cengage Learning; 2015.
7
8. Kotz S, Balakrishnan N, Read C, vidakovic B. Encyclopedia of statistical sciences 2nd ed. Hoboken, NJ: Wiley-Interscience; 2006.
8
9. Luhr H. The development of modern osteosynthesis. Mund- , Kiefer-und Gesichtschirurgie: MKG. 2000;4(1):S84-90.
9
10. Moses H, Powers D, Keeler J, Erdmann D. Opportunity cost of surgical management of craniomaxillofacial trauma. Craniomaxillofac Trauma Reconstr. 2016;9:76-81.
10
11. Sakr K, Farag IA, Zeitoun IM. Review of 509 mandibular fractures treated at the University Hospital, Alexandria, Egypt. Br J Oral Maxillofac Surg. 2006;44:107-11.
11
12. Mabrouk A, Helal H, Mohamed AR, Mahmoud N. Incidence, etiology, and patterns of maxillofacial fractures in Ain-Shams University, Cairo, Egypt: A 4-year retrospective study. Craniomaxillofac Trauma Reconstr. 2014;7:224-32.
12
13. Melek LN, Sharara AA. Retrospective study of maxillofacial trauma in Alexandria University: Analysis of 177 cases. Tanta Dent J. 2016;13:28-33.
13
14. Lee JH, Cho BK, Park WJ. A 4-year retrospective study of facial fractures on Jeju, Korea. J Craniomaxillofac Surg. 2010;38:192-6.
14
15. Munante-Cardenas JL, Nunes PHF, Passeri LA. Etiology, treatment, and complications of mandibular fractures. J Craniofac Surg. 2015;26:611-5.
15
16. Teshome A, Andualem G. Two years’ retrospective study of maxillofacial trauma at a tertiary center in North West Ethiopia. BMC Res Notes. 2017;10:373-4.
16
17. Siber S, Matijević M, Sikora M. Assessment of OroMaxillofacial Trauma According to Gender, Age, Cause and Type of the Injury. Acta Stomatol Croat. 2015;49:340- 7.
17
18.Bhatnagar A, Bansal V, Kumar S, Mowar A. Comparative analysis of osteosynthesis of mandibular anterior fractures following open reduction using ‘stainless steel lag screws and mini plates’. J Maxillofac Oral Surg. 2013;12:133-9.
18
19. Kotrashetti S, Singh A. Prospective study of treatment outcomes with lag screw versus Herbert screw fixation in mandibular fractures. Int J Oral Maxillofac Surg. 2017;46:54-8.
19
20. Lee T, Sawhney R. Miniplate fixation of fractures of the symphyseal and parasymphyseal regions of the mandible: a review of 218 patients. JAMA facial plast surg. 2013;15:121-5
20
21. Haranal SR, Neeli AS. Titanium lag screw osteosynthesis in the management of mandibular fractures. Int Multidiscip Res J. 2012;2:5-8.
21
22. Agnihotri A, Prabhu S. A comparative analysis of the efficacy of cortical screws as lag screws and miniplates for internal fixation of mandibular symphyseal region fractures: a randomized prospective study. J Oral Maxillofac Surg. 2014;43:22-8.
22
23.Boffano P, Roccia F, Gallesio C, Karagozoglu K. Inferior Alveolar Nerve Injuries Associated with Mandibular Fractures at Risk: A Two-Center Retrospective Study. Craniomaxillofac Trauma Reconstr. 2014;7:280-3.
23
24. Schenkel J, Jacobsen C. Inferior alveolar nerve function after open reduction and internal fixation of mandibular fractures. J Craniomaxillofac Surg. 2016;44:743-8.
24
25.Balasubramanian S, Kumaravelu C, Elavenil P, Raja VK. Solitary lag-screw fixation for mandibular angle fractures: Prospective study. SRM J Res Dent Sci. 2014;5:180-1.
25
26.Chhabaria G, Halli R, Chandan S. Evaluation of 2.0-mm Titanium Three-Dimensional Curved Angle Strut Plate in the Fixation of Mandibular Angle Fractures—A Prospective Clinical and Radiological Analysis. Craniomaxillofac Trauma Reconstr. 2014;7:119- 25.
26
27. Guimond C, Johnson JV. Fixation of mandibular angle fractures with a 2.0-mm 3-dimensional curved angle strut plate. J Oral Maxillofac Surg. 2005;63:209-14.
27
28. Shridharani S, Berli J, Manson P, Tufaro A, Rodriguez E. The Role of Postoperative Antibiotics in Mandible Fractures. Ann Plast Surg. 2015;75:353-7.
28
29. Saman M, Kadakia S, Ducic Y. Postoperative Maxillomandibular Fixation After Open Reduction of Mandible Fractures. JAMA Facial Plast Surg. 2014;16:410.
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30. Ellis E. Is lag screw fixation superior to plate fixation to treat fractures of the mandibular symphysis? J Oral Maxillofac Surg. 2012;70:875-82.
30
31. Pattar P, Shetty S, Degala S. A Prospective Study on Management of Mandibular Angle Fracture. J Maxillofac Oral Surg. 2014;13:592-8.
31
32. Yamaji T, Ando K, Wolf S, Augat P. The effect of micro movement on callus formation. J Orthop Sci. 2001;6:571-5.
32
33. Mayrink G, Mendes M, Moreira R, Conto FD. Lag Screw Technique for treating a mandibular angle fracture: case report. Int J Med Surg Sci. 2014;1:263-7
33
34. Schaaf H, Kaubruegge S, Streckbein P. Comparison of miniplate versus lag-screw osteosynthesis for fractures of the mandibular angle. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2011;111:34-40.
34
35. Ellis E, Ghali GE. Lag screw fixation of mandibular angle fractures. J Oral Maxillofac Surg 1991;49:234-43.
35
ORIGINAL_ARTICLE
THE EFFECT OF INJECTION OF THE RECOMBINANT HUMAN GROWTH HORMONE INTO INDUCED TEMPOROMANDIBULAR JOINT ARTHRITIS (AN EXPERIMENTAL STUDY)
INTRODUCTION: Recombinant human growth hormone (rHGH) plays a central role for several metabolic functions including remodeling of bone and cartilage differentiation. Local administration of growth hormone (GH) could be more reasonable due to its more specific effects and less systemic side effects. OBJECTIVES: This study was designed to evaluate histological effects of intra-articular HGH injection in induced arthritis in rabbits temporomandibular joint (TMJ). MATERIALS AND METHODS: This study was conducted on 12 healthy adult white New Zealand rabbits. TMJ arthritis was induced by injecting Complete Freund's Adjuvant (CFA) into TMJ bilaterally. The left side was considered as the study group and injected by rHGH into TMJ, while the right side was considered as the control group and sterile distilled water was injected into TMJ. RESULTS: The condylar cartilage appeared relatively thick & homogenous allover most of the condylar surface in the study group a mean ± SD= 825.92±61.09 µm while,the condylar cartilage showed marked decrease in cartilage thickness &disturbance in the osteochondral junction in control group a mean ± SD= 496.67 ±54.93 µm . CONCLUSIONS: From the current study, it can be concluded that the treatment of TMJ arthritis by rHGH leads to a better condition in regeneration of cartilage and bone.
https://adjalexu.journals.ekb.eg/article_57619_94980f8496a64fba2b328b60675e4464.pdf
2018-08-01
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31
10.21608/adjalexu.2018.57619
TMJ
Arthritis
intra-articular injection
human growth hormone
Complete Freund's Adjuvant
Mohammed A.
Altam
1
B.D.S. Faculty of Dentistry, University of Mosul, Iraq
AUTHOR
Samraa A.
El-Sheikh
2
Professor of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria University, Egypt.
AUTHOR
Riham M.
Eldibany
3
Professor of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria University, Egypt.
AUTHOR
Nesma M.
Khalil
4
Lecturer of Oral Biology Department, Faculty of Dentistry, Alexandria University, Egypt.
AUTHOR
1. Piette E. Anatomy of the human temporomandibular joint. An updated comprehensive review. Acta Stomatol Belg. 1993;90:103-27.
1
2. Al-Mobireek A, Darwazeh A, Hassanin M. Experimental induction of rheumatoid arthritis in temporomandibular joint of the guinea pig: a clinical and radiographic study. Dentomaxillofac Radio. 2000;29:286-90.
2
3. Vashisst H, Gupta A, Jindal A, Jalhan S. Animal models for arthritis-a review. IJRAPR. 2012;2:20-5.
3
4. Asquith DL, Miller AM, McInnes IB, Liew FY. Animal models of rheumatoid arthritis. Eur J Immunol. 2009;39:2040-4.
4
5. Ranabir S, Reetu K. Stress and hormones. Indian J Endocrinol Metab. 2011;15:18.
5
6. Pirinen S. Endocrine regulation of craniofacial growth. Acta Odontologica Scandinavica. 1995;53:179-85.
6
7. Feizbakhsh M, Razavi M, Minaian M, Teimoori F, Dadgar S, Maghsoodi S. The effect of local injection of the human growth hormone on the mandibular condyle growth in rabbit. Dent Res J. (Isfahan) 2014;11:436-41.
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8. Freedman RJ, Malkovska V, LeRoith D, Collins MT. Hodgkin lymphoma in temporal association with growth hormone replacement. Endocr J.2005;52:571-5.
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9. Denko CW, Malemud CJ, editors. Role of the growth hormone/insulin-like growth factor-1 paracrine axis in rheumatic diseases. Semin Arthritis Rheum. 2005: Elsevier.
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10.Maor G, Hochberg Z, Mark KVD, Heinegard D, Silbermann M. Human growth hormone enhances chondrogenesis and osteogenesis in a tissue culture system of chondroprogenitor cells. Endocrinology. 1989;125:1239-45.
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11. Ramirez-Yanez GO, Young WG, Daley TJ, Waters MJ. Influence of growth hormone on the mandibular condylar cartilage of rats. Arch Oral Biol. 2004;49:585- 90.
11
12.Ringold S, Tzaribachev N, Cron RQ. Management of temporomandibular joint arthritis in adult rheumatology practices: a survey of adult rheumatologists. Pediatr Rheumatol Online J. 2012;10:26.
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13.Vermeirsch H, Biermans R, Salmon PL, Meert TF. Evaluation of pain behavior and bone destruction in two arthritic models in guinea pig and rat. Pharmacol Biochem Behav. 2007;87:349-59.
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14. Tominaga K, Alstergren P, Kurita H, Kopp S. Clinical course of an antigen induced arthritis model in the rabbit temporomandibular joint. J Oral Pathol Med. 1999;28(6):268-73.
14
15. Solaiman AAEM, Elagawany AM. Histological study of adult male albino rats’ hepatocytes after formaldehyde administration and the possible protective role of dill oil. E J H. 2015;38:493-503.
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16.Alhadlaq A, Mao J. Tissue-engineered neogenesis of human-shaped mandibular condyle from rat mesenchymal stem cells. J Dent Res. 2003;82:951-6.
16
17.Li P, Schwarz EM, editors. The TNF-α transgenic mouse model of inflammatory arthritis. Springer Semin Immunopathol. 2003: Springer.
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18.Ali AM, Sharawy MM. Histopathological changes in rabbit craniomandibular joint associated with experimentally induced anterior disk displacement (ADD). J Oral Pathol Med. 1994;23:364-74.
18
19.Holmdahl R, Kvick C. Vaccination and genetic experiments demonstrate that adjuvant‐oil‐ induced arthritis and homologous type II collagen‐induced arthritis in the same rat strain are different diseases. Clin Exp Immunol. 1992;88:96-100.
19
20.Kuroki Y, Honda K, Kijima N, Wada T, Arai Y, Matsumoto N, et al. In vivo morphometric analysis of inflammatory condylar changes in rat temporomandibular joint. Oral Dis. 2011;17:499-507.
20
21.Zamma T. Adjuvant-induced arthritis in the temporomandibular joint of rats. Infect Immun. 1983;39:1291-9.
21
22.Sousa VR, Chagas Araújo Sousa F, Silva Filho OF, Rici G, Eli R, Neves Diniz A, et al. Comparative study by computed radiography, histology, and scanning electron microscopy of the articular cartilage of normal goats and in chronic infection with caprine arthritis‐encephalitis virus. Microsc Res Tech. 2014;77:11-6.
22
23.Xu L, Guo H, Li C, Xu J, Fang W, Long X. A timedependent degeneration manner of condyle in rat CFAinduced inflamed TMJ. Am J Transl Res. 2016;8:556.
23
24.Lemos GA, Rissi R, de Souza Pires IL, de Oliveira LP, de Aro AA, Pimentel ER, et al. Low-level laser therapy stimulates tissue repair and reduces the extracellular matrix degradation in rats with induced arthritis in the temporomandibular joint. Lasers Med Sci. 2016;31:1051-9.
24
25.George MD, Owen CM, Reinhardt AL, Giannini PJ, Marx DB, Reinhardt RA. Effect of simvastatin injections on temporomandibular joint inflammation in growing rats. J Oral Maxillofac Surg. 2013;71:846-53.
25
26.Hall JE. Guyton and Hall Textbook of Medical Physiology E-Book: Elsevier Health Sciences; 2015.
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27.Lewinson D, Bialik G, Hochberg Z. Differential effects of hypothyroidism on the cartilage and the osteogenic process in the mandibular condyle: recovery by growth hormone and thyroxine. Endocrinology. 1994;135(4):1504-10.
27
28.Kolbeck S, Bail H, Schmidmaier G, Alquiza M, Raun K, Kappelgard A, et al. Homologous growth hormone accelerates bone healing—a biomechanical and histological study. Bone. 2003;33:628-37.
28
ORIGINAL_ARTICLE
EVALUATION OF THE EFFECT OF CHOLECALCIFEROL AND CALCIUM ON A DELAYED DENTAL IMPLANT ON POST-MENOPAUSAL FEMALES
INTRODUCTION: The replacement of the natural teeth has been the aim of mankind since ancient time. That’s why we use dental implant and its osseointegration should be enhanced. By using Cholecalciferol and Calcium on postmenopausal females. OBJECTIVES: The aim of the study was to evaluate the effect of combination of cholecalciferol and calcium on delayed dental implants healing for postmenopausal females. MATERIALS AND METHODS: A clinical and radiographical study was carried out on 14 postmenopausal female patients with age range from 40 to 60 years having missing maxillary anterior teeth. All the patients received the same implant system. The study group only received cholecalciferol and calcium for 8 months and the control group didn’t receive thing. After placement all implants were evaluated clinically after 4 and 8 months (modified gingival index, papillary bleeding index, and degree of mobility) and radiographically after 4 and 8 months to evaluate marginal bone loss. RESULTS The study group showed an increase in bone density. Group I(study): was better with a mean of (120.8±39.53) pixel while Group II(control): showed a mean of (90.84±41.6) pixel the difference of the bone density between the two groups was statistically significant (p=0.008). CONCLUSIONS: The implant placement in postmenopausal female patients may be successful. Cholecalciferol and calcium has systemic effects on accelerating bone formation around titanium implants
https://adjalexu.journals.ekb.eg/article_57620_f65b2bbcbf20d5d70e4f8b3333ec6eb0.pdf
2018-08-01
32
38
10.21608/adjalexu.2018.57620
dental implant
Cholecalciferol
calcium
Postmenopausal females
osseointegration
Engy M.
Farid
1
- Bachelor of Dentistry, BDS, Faculty of Dentistry, 6October University, Cairo, Egypt.
AUTHOR
Magda M.
Saleh
2
- Professor of Oral and Maxillofacial Surgery, BDS, MSc, PhD, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
AUTHOR
Lydia N.
Melek
3
- Lecturer of Oral and Maxillofacial Surgery, BDS, MSc, PhD, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
AUTHOR
1. lsaksson S. Evaluation of three bone grafting techniques for severely resorbed maxilla in conjunction with immediate endosseous implants. Int J Oral Maxillofac Implants. 1994;9:679-88.
1
2. Covani U, Bortolaia C, Barone A, Sbordone L. Buccolingual crestal bone changes after immediate and delayed placement. J Periodontol. 2004;75:1605-12.
2
3. Ogismo M, Tabata T, Lee RR, Borgese D. Delay method of implantation enhances implant-bone binding: A comparison with the conventional method. Int J Oral Maxillofac Implants. 1995;10:415–20.
3
4. Marco F, Milena F, Gianluca G, Vittoria O. Periimplant osteogenesis in health and osteoporosis. Micron. 2005;36:630-44.
4
5. Linder L, Obrant K, Boivin G. Osseointegration of metallic implants. II. Transmission electron microscopy in the rabbit. ActaOrthop Scand. 1989;60:135-9.
5
6. Soballe K. Hydroxyapatite ceramic coating for bone implant fixation. Mechanical and histological studies in dogs. ActaOrthopScand Suppl. 1993;255:1-58. 7. Khan SN, Cammisa FP Jr, Sandhu HS, Diwan AD, Girardi FP, Lane JM. The biology of bone grafting. J Am AcadOrthop Surg. 2005;13:77-86.
6
8. Younger EM, Chapman MW. Morbidity at bone graft donor sites. J Orthop Trauma. 1989;3:192-5.
7
9. Eberhardt C, Habermann B, Müller S, Schwarz M, Bauss F, Kurth AH. The bisphosphonate ibandronate accelerates osseointegration of hydroxyapatite-coated cementless implants in an animal model. J Orthop Sci. 2007;12:61-6.
8
10. Başarir K, Erdemli B, Can A, Erdemli E, Zeyrek T. Osseointegration in arthroplasty: can simvastatin promote bone response to implants? IntOrthop. 2009;33:855-9.
9
11. Viljakainen HT, Natri AM, Kärkkäinen M, Huttunen MM, Palssa A, Jakobsen J, et al. A positive dose-response effect of vitamin D supplementation on site-specific bone mineral augmentation in adolescent girls: a double-blinded randomized placebo-controlled 1-year intervention. J Bone Miner Res. 2006;21:836-44.
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12. Schedlich LJ, Muthukaruppan A, O'Han MK, Baxter RC. Insulin-like growth factor binding protein-5 interacts with the vitamin D receptor and modulates the vitamin D response in osteoblasts. MolEndocrinol. 2007;21:2378-90.
11
13. Shiraishi A, Higashi S, Ohkawa H, Kubodera N, Hirasawa T, Ezawa I, et al. The advantage of alfacalcidol over vitamin D in the treatment of osteoporosis. Calcif Tissue Int. 1999;65:311-6.
12
14. Sairanen S, Kärkkäinen M, Tähtelä R, Laitinen K, Mäkelä P, Lamberg-Allardt C, et al. Bone mass and markers of bone and calcium metabolism in postmenopausal women treated with 1,25-dihydroxyvitamin D (calcitriol) for four years. Calcif Tissue Int. 2000;67:122-7.
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15. Macdonald HM, Wood AD, Aucott LS, Black AJ, Fraser WD, Mavroeidi A, et al. Hip bone loss is attenuated with 1000 IU but not 400 IU daily vitamin D3: a 1 year doubleblind RCT in postmenopausal women. J Bone Miner Res. 2013;28:2202-13.
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16. Pasqualini D, Cocero N, Castella A, Mela L. Primary and secondary closure of the surgical wound removal of the impacted mandibular 3rd molar: a comparative study. Int J MaxillofacSurg 2005;34:52-7.
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17. Mckinney R, Koth D, Steflik D. Clinical standards for dental implant. In: Clark JW (ed). Clinical dentistry. Harperstwon: Harper and Row, 1998;1-11.
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18. Muhlemann HR. Physiology and chemical mediators of gingival health. J Prev Dent 1977; 4:6-20.
17
19. Beer A, Gahleitner A, Holm A, Tschabitscher M, HomolkaP.Corelation of insertion torques with bone mineral density from dental quantitative CT in the mandible.Clin Oral Implants Res 2003; 14:616-20.
18
20. Bornstein MM, Cionca N, Mombelli A. Systemic conditions and treatments as risks for implant therapy. Int J Oral Maxillofac Implants 2009; 24: 12-27.
19
21. Leonhardt A, Dahlen G, Renvert S. Five- year clinical, microbiological and radiological outcome following treatment of peri- implantitis in man. J Periodontol 2003; 74: 1415-22.
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22. Elsubeihi E, Zarb G. Implant Prosthodontics in Medically Challenged Patients. J Can Dent Assoc.2002; 68(2): 103-8.
21
23. Al-Sabbagh M, Bhavsar I. Key local and surgical factors related to implant failure. Dent Clin North Am 2015; 59: 1- 23.
22
24.Becker W, Becker B. Guided tissue regeneration for implants placed into extraction socket and for implant dehiscence: Surgical techniques and case reports. Int J PeriodontRestor Dent. 1990;10:376-91.
23
25.Elsubeihi E, Zarb G. Implant Prosthodontics in Medically Challenged Patients. J Can Dent Assoc. 2002;68:103-8.
24
26.Mori H, Manabe M, Kurachi Y, Nagume M. Osseointegration of dental implants in rabbits with low mineral density. J Oral Maxillofac Surg. 1997;55:351-61.
25
27.Brånemark PI. Osseointegration and its experimental studies. J Prosthet Dent. 1983;50:399-410.
26
28.Ciancio S, Lauciello F, Shibly O, Vitello M, Mather M. The effect of an antiseptic mouthrinse on implant maintenance: plaque and peri implant gingival tissues. J Periodontol. 1995;66(11):962-5.
27
29.Beilker T, Flemmig F. Implant in the medically compermised patients. Crit Rev Oral Biol Med. 2003;14:305-16.
28
30.Dao T, Anderson J, Zarb G. Is osteoporosis a risk factor for osseointegration of dental implants? Int J Oral Maxillofac Implants. 1993;8:137-44.
29
31.Porter J, Von Fraunhofer J. Success or failure of dental implants? A literature review with treatment considerations. General Dent. 2005;53:423-32.
30
32.Loe H, Silness J. The Gingival Index, the Plaque Index and the Retention Index system. J Periodontol. 1967;38:610.
31
33.Joly J, de Lima A, Da Silva R. Clinical and radiographic evaluation of soft and hard tissue changes around implants; A pilot study. J Periodontol. 2003;74:1097-103.
32
34.Shimpuku H, Nosaka Y, Kawamura T, Tachi Y, Shinohara M, Ohura K. Genetic polymorphism of interleukin-1 gene and early marginal bone loss around endosseous dental implants. Clin Oral Implants Res. 2003;14:423-9.
33
35.Yunus B. Assessment of the increased calcification of the jaw bone with CT-Scan after dental implantplacement. Imaging Sci Dent 2011; 41: 59-62
34
36.Zhou XQ, Hu J, Du ZJ, Yang JH, Liu M, Li XM. Oestrogen replacement therapy promotes bone healing around dental implants in osteoporotic rats. Int J Oral Maxillofac Surg. 2004;33:279–285.
35
37.Fulker K.Update on bone density measurement. Rheum Dis Clin North Am. 2001;27:81-99.
36
ORIGINAL_ARTICLE
PALATAL VERSUS BUCCAL ANTRAL APPROACH FOR MAXILLARY SINUS LIFTING AND IMPLANT PLACEMENT
INTRODUCTION: Implant placement in the maxillary posterior alveolar ridge is often complicated by post extraction bone resorption, pneumatization of maxillary sinuses, and poor quality of alveolar bone. In these situations, the residual vertical bone height is reduced making standard implant placement difficult. Elevation of the maxillary sinus floor using the lateral antral approach is one possible solution. Palatal window osteotomy approach for maxillary sinus floor lifting is a new surgical technique used to increase vertical bone height prior to implant placement. OBJECTIVES: This study was designed for clinical evaluation of the maxillary sinus lifting technique using a palatal approach versus buccal approach. MATERIALS AND METHODS: this study was carried out as a randomized controlled clinical trial, the study sample included 14 patients. The sample was selected conveniently to fulfill a list of inclusion and exclusion criteria. All patients were divided into two equal groups, had gone maxillary sinus lifting together with implant placement, group1 :( study group) seven patients had sinus lifting through the palatal approach technique simultaneously with implant insertion. In group2 (control group) seven patients had maxillary sinus lifting using buccal antral approach technique simultaneously with implant insertion. Clinical and radiographic evaluation was done through 6 months postoperatively. RESULTS: Regarding postoperative clinical evaluation, group 1 was superior to that of group 2 in tissue management, because the vestibular anatomy in this group was not altered neither postoperative swelling occurred consequently nor disharmonious soft tissue scarring. Regarding the postoperative radiographic evaluation, group 1 was significantly increased in bone density around dental implants and less marginal bone loss postoperatively, however group 2 had higher vertical amount of bone gained around implants postoperatively. CONCLUSIONS: The palatal sinus lifting approach permitted higher postoperative comfort, less postoperative edema, less marginal bone loss around implants, and higher bone density around implants postoperatively.
https://adjalexu.journals.ekb.eg/article_57621_b6f7decc298135081b216c4f61924d2f.pdf
2018-08-01
39
45
10.21608/adjalexu.2018.57621
Palatal sinus lifting approach
buccal sinus lifting approach
Dental implants
Omar N.
EL-prince
1
MD Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria University, Egypt
AUTHOR
Abdelaziz F.
Khalil
2
Professor of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria University, Egypt
AUTHOR
Ahmed M.
EL-sabbagh
3
Professor of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria University, Egypt
AUTHOR
Magued H.
Fahmy
4
-Professor of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria University, Egypt.
AUTHOR
1.Christensen GJ. Elective vs. mandatory dentistry. J Am Dent Assoc. 2000;131:1496-8.
1
2.Branemark AI, Hansson BO, Adell R, Breine U, Lindstrom J, Hallen O, et al. Osseointegrated implants in the treatment of the orthognathic treated jaw. Experience from a 10-year period. Scand J Plast Reconstr Surg Suppl. 1974;16:3-24.
2
3. Albrektsson T, Johansson C. Osteoinduction, osteoconduction and osseointegration. Eur Spine J. 2003;2:12-22.
3
4.Jensen OT. The sinus bone graft. Chicago, London: Quintessence Publ.; 1999. p. 52
4
5.Chanavaz M. Maxillary sinus dextra sinistra: anatomy, physiology, surgery, and bone grafting related to extraction--eleven years of surgical experience (1979- 1990). J Oral Implantol. 1992;12:192-200.
5
6.Misch CE, Steignga J, Barboza E, Misch-Dietsh F, Cianciola LJ, Kazor C.. Short dental implants in posterior partial edentulism: A multicenter retrospective 6-year case series study. J Periodontal. 2006;77:1340-7.
6
7. Del Fabbro M, Rosano G, Taschieri S. Implant survival rates after maxillary sinus augmentation. Eur J Oral Sci. 2008;116:497-506.
7
8.Boyne PJ. Grafting of maxillary sinus floor with autogenous marrow and bone. J Oral Surg. 1980;38:613- 6.
8
9.Tatum Jr H. Maxillary and sinus implant reconstructions. Dent Clin North Am. 1986;30:207-29.
9
10.Wood RM, Moore DL. Grafting of the maxillary sinus with intraorally harvested autogenous bone in order to place implant in the edentolous jaw. Int J Oral Maxillofac Implants. 1994;3:201-12.
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11. Summers RB. A new concept in maxillary implant surgery: the osteotome technique. Compend Contin Educ Dent. 1994;15:152-62.
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12. Marx RE, Garg AK. A novel aid to elevation of the sinus membrane for the sinus lift procedure. Implant Dent. 2002;11:268–71.
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13. Raghoebar GM, Timmenga NM, Reintsema H, Stegenga B, Vissink A. Maxillary bone grafting for insertion of endosseous implants: results after 12–124 months. Clin Oral Implants Res. 2001;12:279–86.
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14. Kahnberg KE, Ekestubbe A, Gröndahl K, Nilsson P, Hirsch JM. Sinus lifting procedure. I. One-stage surgery with bone transplant and implants. Clin Oral Implants Res. 2001;12:479–87.
14
15. Zitzmann NU, Scharer P. Sinus elevation procedures in the resorbed posterior maxilla: Comparison of the crestal and lateral approaches. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1998;85:8–17.
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16. Summers RB. The osteotome technique: Part 3. Less invasive methods of elevating sinus floor. Compend Contin Educ Dent. 1994;15:698-708.
16
17. Cosci F, Luccioli M. A new sinus lift technique in conjunction with placement of 265 implants: A 6-year retrospective study. Implant Dent. 2000;9:363-8.
17
18. Fugazzotto PA. The modified trephine/osteotome sinus augmentation technique: Technical considerations and discussion of indications. Implant Dent. 2001;10:259- 64.
18
19. Ping-Yuen F. Piezoelectric-assisted osteotomemediated sinus floor elevation: An innovative approach. Implant Dent. 2010;19:299-305.
19
20. Stübinger S, Saldamli B, Landes CA, Sader R. Palatal piezosurgical window osteotomy for maxillary sinus augmentation. Int J Oral Maxillofac Surg. 2010;39:606–9.
20
21. Chang DJ, Bird SR, Bohidar NR, King T. Analgesic efficacy of rofecoxib compared with codeine/acetaminophen using a model of acute dental pain. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2005;100:e74-80.
21
22. Henrikson PA, Thilander H, Wåhlander LA. Voltaren as an analgesic after surgical removal of a lower wisdom tooth. Int J Oral Maxillofac Surg.1985;14:333- 8.
22
23. Wachtel H, Schenk G, Bohm S. Weng D, Zuhr O, Hurzeler M. Micro·surgical access flap and enamel matrix derivative for the treatmentof periodontal intrabony defects: A controlled clinical study. J Clin Periodontal. 2003;30:496-504.
23
24. Kotz S BN, Read CB, Vidakovic B. Encyclopedia of statistical sciences. N.J.: Wiley-Interscience; 2006. pp 33-59.
24
25. Hayek E, Nasseh I, Hadchiti W, Bouchard P, Moarbes M, Khawam G, et al. Location of posterosuperior alveolar artery and correlation with maxillary sinus anatomy. Int J Periodontics Restorative Dent. 2015;35:e60-5.
25
26. Nedir R, Bischof M, VazquezL, Szmukler-Moncler S, Bernard JP. Osteotome sinus floor elevation without grafting material: a 1year prospective pilot study with ITI implants. Clin Oral Implants Res. 2006;17:679-86.
26
27.He L, Chang X, Liu Y. Sinus floor elevation using osteotome technique without grafting materials: a 2-year retrospective study. Clin Oral Implants Res. 2011;8:1-5.
27
28.Sohn DS, Moon JW, Lee WH, Kim SS, Kim CW, Kim KT, et al. Comparison of new bone formation in the maxillary sinus with and without bone grafts: immunochemical rabbit study. Int J Oral Maxillofac Implants. 2011;26:1033-42.
28
29.Hatano N, Sennerby L, Lundgren S. Maxillary sinus augmentation using sinus membrane elevation and peripheral venous blood for implant-supported rehabilitation of the atrophic posterior maxilla: Case series. Clin Implant DentRelat Res. 2007;9:150-5.
29
30.Sani E, Veltri M, Cagidiaco MC, Balleri P, Ferrari M. Sinus membrane elevation in combination with placement of blasted implants: a 3-year case report of sinus augmentation without grafting material. Int J Oral MaxillofacSurg. 2008;37:966-9.
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31.Balleri P, Veltri M, Nuti N, Ferrari M. Implant placement in combination with sinus membrane elevation without Biomaterials: a 1-year study on 15patients. Clin Implant Dent Relat Res. 2012;14:682-9.
31
ORIGINAL_ARTICLE
A COMPARATIVE LABORATORY STUDY OF THE CLEANING EFFICIENCY OF XP ENDO FINISHER AND SONIC IRRIGATION
INTRODUCTION: Debridement of the root canal system is essential for endodontic success. Traditional instruments alone cannot sufficiently clean root canals. There must be an effective delivery system. OBJECTIVES: was to compare the cleaning efficiency of XP-endo Finisher and the EndoActivator using the scanning electron microscope. MATERIALS AND METHODS Sixty human mandibular first premolars with single oval canals were used in this study. Teeth were instrumented using One-Shape file. Teeth were then randomly divided into three parallel groups (n=20) according to the agitation method used; Group I: XP-endo Finisher. Group II: EndoActivator. Group III: both XP-endo Finisher and EndoActivator. Teeth were sectioned longitudinally and assessed by the scanning electron microscope using the five-score debris and smear layer indices. Data were analyzed using Kruskal-Wallis, Friedman, and Dunn-Bonferroni tests. RESULTS: No significant differences were found between XP- endo Finisher and EndoActivator in debris and smear layer removal. In the middle segment, each of the XP-endo Finisher and EndoActivator revealed significantly lower debris scores than both together (P<0.05). In the coronal and apical segments the three groups equally cleaned debris (P>0.05). In smear layer removal, significant differences were found in both the coronal and apical segments between each one of the XP-endo Finisher and EndoActivator compared to both together (P<0.05). While in the middle segment, there were insignificant differences between the three groups in smear layer removal (P>0.05). The apical segment was more efficiently cleaned from debris and smear layer than the other segments in all groups. CONCLUSIONS: Irrigation of root canals using XP-endo Finisher and EndoActivator solely was more effective in the removal of debris and smear layer than both used together. The apical third was more efficiently cleaned from debris and smear layer than the other segments.
https://adjalexu.journals.ekb.eg/article_57623_8c044c9099cdc0e9d6bc5ed3629b0b83.pdf
2018-08-01
46
50
10.21608/adjalexu.2018.57623
endodontics
Smear layer
Debris
XP-endo Finisher
EndoActivator
Scanning electron microscope
Moshira I.
Hammad
1
Resident dentist at the Conservative Dentistry Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
LEAD_AUTHOR
Amr M.
Abdallah
2
Head of Conservative Dentistry Department and Professor of Endodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
AUTHOR
Nihal A.
Leheta
3
Lecturer of Endodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
AUTHOR
1- Örstavik D, Ford T. Essential Endodontology: Prevention and Treatment of Apical Periodontitis, 2nd ed. NJ: Blackwell W Ltd; 2008:6-20.
1
2- Shilder H. Cleaning and Shaping the Root Canal. Dent Clin North Am. 1974; 18: 269–96.
2
3- Heard F, Walton R. Scanning Electron Microscope Study Comparing Four Root Canal Preparation Techniques in Small Curved Canals. Int Endod J. 1997; 30: 323–31.
3
4- Peters C, Barbakow F. Effect of Irrigation on Debris and Smear Layer on Canal Walls Prepared by Two Rotary Techniques: A Scanning Electron Microscopic Study. J Endod. 2000; 25: 6–10.
4
5- Örstavik D, Haapasalo M. Disinfection by Endodontic Irrigants and Dressings of Experimentally Infected Dentinal Tubules. Endod Dent Traumatol. 1990; 6: 142–9.
5
6- White R, Goldman M, Lin P. The Influence of the Smeared Layer upon Dentinal Tubule Penetration by Endodontic Filling Materials (part II). J Endod. 1987; 13: 369–74.
6
7- Kennedy W, Walker W, Gough R. Smear Layer Removal Effects on Apical Leakage. J Endod. 1986; 12: 21–7.
7
8- Saunders W, Saunders E. The Effect of Smear Layer upon the Coronal Leakage of Gutta-Percha Fillings and a Glass Ionomer Sealer. Int Endod J. 1992; 25: 245–9.
8
9- Hartmann M, Barletta F, Fontanella V, Vanni J. Canal Transportation after Root Canal Instrumentation: A Comparative Study with Computed Tomography. J Endod. 2007;33:962-5.
9
10- Iqbal M, Maggiore F, Suh B Edwards K, Kang J, Kim S. Comparison of Apical Transportation in Four Ni-Ti Rotary Instrumentation Techniques. J Endod. 2003;29:587–91.
10
11- Johnson E, Lloyd A, Kuttler S, Namerow K. Comparison between a Novel Nickel-Titanium Alloy and 508 Nitinol on the Cyclic Fatigue Life of ProFile 25/.04 Rotary Instruments. J Endod. 2008;34:1406-9.
11
12- Nielsen B, Baumgartner C. Comparison of the EndoVac System to Needle Irrigation of Root Canals. J Endod. 2007; 33: 611–5.
12
13- Van der Sluis L, Versluis M, Wu M, Wesselink P. Passive Ultrasonic Irrigation of the Root Canal: A Review of the Literature. Int Endod J. 2007; 40: 415–26
13
14- Ram Z. Effectiveness of Root Canal Irrigation. Oral Surg Oral Med Oral Pathol. 1977;44:306-12.
14
15- Uroz-Torres D, Gonzales-Rodriguez M, Ferrer-Luque C. Effectiveness of the EndoActivator System in Removing the Smear Layer after Root Canal Instrumentation. J Endod. 2010; 36:308-11.
15
16- Ruddle C. Endodontic Disinfection: Tsunami Irrigation. Endod Practice. 2008; 11:7-15.
16
17- Jensen S, Walker T, Hutter J, Nicoll B. Comparison of the Cleaning Efficacy of Passive Sonic Activation and Passive Ultrasonic Activation after Hand Instrumentation in Molar Root Canals. J Endod. 1999; 25: 735–8.
17
18- Hugo R, Karla C. Efficacy of Three Different Endodontic Irrigation Systems for Irrigant Delivery to Working Length of Mesial Canals of Mandibular Molars J Endod. 2012;38:445-8.
18
19- Kuah H, Lui J, Tseng P, Chen N. The Effect of EDTA with and without Ultrasonics on Removal of the Smear Layer. J Endod. 2009; 35: 393–6.
19
20- Nielsen B, Baumgartner C. Comparison of the EndoVac System to Needle Irrigation of Root Canals. J Endod. 2007; 33: 611–5.
20
21- Hulsman M, Rummelin C, Schafers F. Root Canal Cleanliness after Preparation with Different Endodontic Handpieces and Hand Instruments: A Comparative SEM Investigation. J Endod. 1997; 23: 301-6.
21
22- Binkley S. An In- Vitro SEM Study Comparing the Debridement Efficacy of the EndoActivator System Versus the Ultrasonic Bypass System Following HandRotary Instrumentation. Master’s Thesis, Indiana Univ; 2010.
22
23- Klyn S, Kirkpatrick T, Rutledge R. In Vitro Comparisons of Debris Removal of the EndoActivatorTM System, the F FileTM, Ultrasonic Irrigation, and NaOCl Irrigation Alone after Handrotary Instrumentation in Human Mandibular Molars. J Endod. 2010;36:1367-71.
23
24- Kamel W, Kataia E. Comparison of the Efficacy of Smear Clear with and without a Canal Brush in Smear Layer and Debris Removal from Instrumented Root Canal Using Wave One Versus ProTaper: A Scanning Electron Microscopic Study. J Endod. 2014;40:446– 50.
24
25- Yana Y. An In Vivo Comparative Study of the Penetration of Sodium Hypochlorite in Root Canal Systems During Cleaning and Shaping Procedures Using the B.U. Technique and Sonic Instrumentation. Master’s Thesis, Boston Univ; 1989.
25
26- Hu X, Peng Y, Sum CP, Ling J. Effects of Concentrations and Exposure Times of Sodium Hypochlorite on Dentin De-Proteination: Attenuated Total Reflection Fourier Transform Infrared Spectroscopy Study. J Endod. 2010;36:2008–11.
26
27- Johnson W, Noblett W. Cleaning and Shaping in: Endodontics: Principles and Practice, 4th ed. Philadelphia: Saunders; 2009: 12-50.
27
28- Trope M, Debelian G. XP-3D Finisher File - The Next Step in Restorative Endodontics. Endod Practice US. 2015; 8: 14-6.
28
29- Živković S, Nešković J, Jovanović-Medojević M, Popović-Bajić M, Živković-Sandić M. XP-endo Finisher: A New Solution for Smear Layer Removal. Serbian Dent J. 2015;62:314-78.
29
30- Lertchirakarn V, Palamara J, Messer H. Patterns of Vertical Root Fracture: Factors Affecting Stress Distribution in the Root Canal. J Endod. 2003;29:523-8.
30
31- Keleş A, Alcin H, Kamalak A, Versiani M. Ovalshaped Canal Retreatment with Self-Adjusting File: A Micro-Computed Tomography Study. Clin Oral Investig. 2014;18:1147-53.
31
ORIGINAL_ARTICLE
COMPARISON OF STRESSES TRANSMITTED TO ONEPIECE AND TWO-PIECE NARROW-DIAMETER IMPLANTS IN MANDIBULAR OVER DENTURES (A FINITE ELEMENT STRESS ANALYSIS)
INTRODUCTION: The goal of modern dentistry is to restore the patient to normal contour, function and esthetics. And what makes implant dentistry unique is the ability to achieve this goal regardless of the atrophy, disease or injury. Implants with small diameters can be used successfully in a variety of clinical situations. A main drawback of Narrow-diameter implants is the possibility of not reaching the required primary stability (> 35Ncm). In such cases, being a one-piece implant, occlusal stresses are expected to disturb proper osseointegration. Lately, 2-piece narrow diameter implants were introduced to the market combining the undisturbed healing period required for proper osseointegration and the avoidance of extensive surgeries for bone augmentation. OBJECTIVES The purpose of this study is to determine, using 3-dimensional finite element analysis, whether 1-piece and 2-piece narrow diameter implants with equivalent geometries exhibit stresses and strains differently under applied loading conditions when used to retain a mandibular overdenture and, to evaluate how stresses are transmitted to the surrounding bone. MATERIALS AND METHODS: A computer based numerical model is structured for the anterior segment of the mandible with, 2 narrow diameter implants retaining a mandibular overdenture, one being a 1-piece and the other being a 2-piece. A 35N, and a 100N loads were applied through the overdenture, and Von Mises stresses were analyzed along the implants and the surrounding bone. RESULTS Stresses around the 2-piece design were greater than those around the 1-piece design, but the values recorded were still below the yield strength of implants and bone. CONCLUSIONS: A 2-piece narrow diameter implant can be a reliable treatment option to retain overdentures in cases where immediate loading is not recommended
https://adjalexu.journals.ekb.eg/article_57624_62dbb4f165c43a9a46c3689296d9e936.pdf
2018-08-01
51
56
10.21608/adjalexu.2018.57624
narrow-diameter
1-piece
2-piece
Overdentures
Finite Element Analysis
Sarah M.
Moustafa
1
BDS, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
LEAD_AUTHOR
Mohamed S.
Elattar
2
Professor of Prosthodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
AUTHOR
Tamer M.
Ahmed
3
Lecturer, The Dept. of Naval Architecture and Marine Eng., Faculty of Engineering, Alexandria University, Alexandria, Egypt
AUTHOR
1. Martínez-Lage-Azorín JF, Segura-Andrés G, FausLópez J, Agustín-Panadero R. Rehabilitation with implant-supported overdentures in total edentulous patients: a review. J Clin Exp Dent. 2013; 5: 267-72.
1
2. Misch CE. Contemporary Implant Dentistry. 3rd ed. Missouri: Elsevier Mosby; 2008.
2
3. van Steenberghe D, Quirynen M, Naert I, Maffei G, Jacobs R. Marginal bone loss around implants retaining hinging mandibular overdentures, at 4-, 8- and 12-years follow-up. J Clin Periodontol. 2001; 28: 628-33.
3
4. Ring ME. Pause for a moment in dental history. A thousand years of dental implants. A definitive history-part 2. Compend Contin Educ Dent. 1988; 14: 1132-42.
4
5. Ormianer Z, Ben Amar A, Duda M, Marku-Cohen S, Lewinstein I. Stress and strain patterns of 1-piece and 2-piece implant systems in bone: A 3 dimensional finite element analysis. Implant Dent. 2012; 21: 39- 45.
5
6. Arun Kumar G, Mahesh B, George D. Threedimensional finite element analysis of stress distribution around implant with straight and angled abutments in different bone qualities. J Indian Prosthodont Soc. 2013; 13: 466-72.
6
7. Yaltirik M, Gökçen-Röhlig B, Ozer S, Evlioglu G. Clinical evaluation of small diameter straumann implants in partially edentulous patients: a 5-year retrospective study. J Dent (Tehran). 2011;
7
8: 75-80. 8. Alsaadi G, Quirynen M, Michiels K, Jacobs R, Van Steengerghe D. A biomechanical assessment of the relation between the oral implant stability at insertion and subjective bone quality assessment. J Clin Periodontol. 2007; 34: 359-66.
8
9. Bornstein MM, Al-Nawas B, Kuchler U, Tahmaseb A. Consensus statements and recommended clinical procedures regarding contemporary surgical and radiographic techniques in implant dentistry. Int J Oral Maxillofac Implants. 2014; 29(Suppl): 78-82.
9
10. Baggi L, Cappelloni I, Di Girolamo M, Maceri F, Vairo G. The influence of implant diameter and length on stress distribution of osseointegrated implants related to crestal bone geometry: A three-dimensional finite element analysis. J Prosthet Dent. 2008; 100: 422-31.
10
11. Frost HM. Wolff’s Law and bone’s structural adaptation to mechanical use: an overview for clinicians. Angle Orthod. 1994; 64: 175-88.
11
12. Huang HM, Pan LC, Lee SY, Ho KN, Fan KH, Chen CT. Natural frequency analysis for the stability of a dental implant by finite element method. J Med Biol Eng. 2001; 21: 61-70.
12
13. Geng JP, Tan KB, Liu GR. Application of finite element analysis in implant dentistry: a review of the literature. J Prosthet Dent. 2001; 85: 585- 98.
13
14. Padhye OV, Herekar M, Patil V, Mulani S, Sethi M, Fernandes A. Stress distribution in bone and implants in mandibular 6-implantsupported cantilevered fixed prosthesis: A 3D finite element study. Implant Dent. 2015; 24: 680-5.
14
15. Rubo JH, Souza EA. Finite element analysis of stress in bone adjacent to dental implants. J Oral Implantol. 2008; 34: 248-55.
15
16. Aleisa K. The effect of attachment pick-up timing on the retention of locator overdenture posts. Pakistan Oral Dental J. 2012; 32: 543-8.
16
17. Bellini CM, Romeo D, Galbusera F, Agliardi E, Pietrabissa R, Zampelis A, et al. A finite element analysis of tilted versus non-tilted implant configuration in the edentulous maxilla. Int J Prosthodont. 2009; 22: 155-7.
17
18. Misch CE. Density of bone: Effect on treatment plans, surgical approach, healing and progressive loading. Int J Oral Implantol. 1990; 6: 23-31.
18
19. Greco GD, Jansen WC, Landre J, Seraidarian PI. Stress analysis of the free-end distal extension of an implant-supported mandibular complete denture. Braz Oral Res. 2009; 23: 175- 81.
19
20. Menicucci G. Mandibular implant-retained overdenture: finite element analysis of two anchorage systems. Int J Oral Maxillofac Implants. 1998; 13: 369-76.
20
21. Fujimoto T, Niimi A, Murakami I, Ueda M. Use of new magnetic attachments for implantsupported overdentures. J Oral Implantol. 1998; 24: 147-51.
21
22. Barao VA, Assuncao WG, Tabata LF, Delben JA, Gomes EA, De Sousa EA, et al, Finite element analysis to compare complete denture and implant-retained overdentures with different attachment systems. J Craniofac Surg. 2009; 20: 1066-71.
22
23. Chun HJ, Park DN, Han CH, Heo SJ, Heo MS, Koak JY. Stress distribution in maxillary bone surrounding overdenture implants with different overdenture attachments. J Oral Rehabil. 2005; 32: 193-205.
23
24. Ammar HH, Ngan P, Crout RJ, Mucino VH, Mukdadi OM. Three-dimensional modeling and finite element analysis in treatment planning for orthodontic tooth movement. Am J Orthod Dentofacial Orthop. 2011; 139: 59-71.
24
25. Elias CN, Lima JHC, Valiev R, Meyers MA. Biomedical applications of titanium and its alloys. JOM. 2008; 60: 46-9.
25
26. Qian J, Wennerberg A, Albrektsson T. Reasons for marginal bone loss around oral implants. Clin Implant Dent Relat Res. 2012; 14: 792- 807.
26
27. Ming-Lun H, Chih-Ling C. Application of finite element analysis in dentistry, In: Moratal D (ed). Finite Element Analysis. Croatia: InTech; 2010.
27
28. Hardtmann G, Proeschel P, Ott RW. Masticatory forces and maximum jaw closure forces of complete denture wearers before and after bite opening. Dtsch Zahnarztl Z. 1989; 44: 26-9.
28
29. Zarb G, Hobkirk J, Eckert S, Jacob R. Prosthodontic treatment for edentulous patients: Complete dentures and implantsupported prostheses. 13th ed. Part 1: the patient. St. Louis, USA: Elsevier Mosby; 2012.
29
30. Watanabe F, Hata Y, Komatsu S, Ramos TC, Fukuda H. Finite element analysis of the influence of implant inclination, loading position, and load direction on stress distribution. Odontology. 2003; 91: 31-6.
30
31. Iplikçioğlu H, Akça K, Cehreli MC, Sahin S. Force transmission of one- and two-piece morse-taper oral implants: a nonlinear finite element analysis. Clin Oral Implants Res. 2004; 15: 481-9.
31
32. Wu AY, Hsu JT, Chee W, Lin YT, Fuh LJ, Huang HL. Biomechanical evaluation of onepiece and two-piece small-diameter dental implants: In-vitro experimental and threedimensional finite element analysis. J Formos Med Assoc. 2006; 115: 794-800.
32
33. Allum SR, Tomlinson RA, Joshi R. The impact of loads on standard diameter, small diameter and mini implants: A comparative laboratory study. Clin Oral Implants Res. 2008; 19: 553-9.
33
34. Jackson BJ. Small diameter implants: Specific indications and considerations for the posterior mandible: a case report. J Oral Implantol. 2011; 37: 156-64.
34
35. Luo X, Ouyang G, Ma X, Jia A, Guo T. The three-dimensional analysis of mandibular overdenture supported by implants. Sheng Wu Yi Xue Gong Cheng Xue Za Zhi. 1998; 15: 167-71.
35
36. Mechanics of solids I BTME1205. Available at:https://www.slideshare.net/abinashchoudhur y/module-1-mechanics.
36
ORIGINAL_ARTICLE
BOTULINUM TOXIN TYPE-A…AN EVOLVING TREATMENT MODALITY IN THE MANAGEMENT OF TEMPOROMANDIBULAR JOINT DISC DISPLACEMENT
INTRODUCTION: Temporomandibular disorders (TMD) is an umbrella term embracing a set of conditions that affect the masticatory muscles and the temporomandibular joint (TMJ) .Internal derangements, specifically disc displacement with reduction (DDr), are one of the major findings in TMD . For the treatment of DDr, occlusal appliances and some pharmacological agents were suggested. Several studies were done evaluating the therapeutic use of Botulinum Toxin Type A (BTX-A) in TMD of myogenic origin. But only few studies investigated its effect in the management of TMD of arthrogenic origin. OBJECTIVES: This study was done to evaluate the effect of Botulinum Toxin Type A (BTX-A) injection in the lateral pterygoid muscle (LPM) with and without anterior repositioning appliance (ARA) as a treatment modality for DDr. MATERIALS AND METHODS: Eighteen patients with anterior disc displacement with reduction (DDr) as diagnosed clinically using Research Diagnostic Criteria (RDC/TMD) and confirmed by MRI were enrolled in this study. Patients were randomly assigned into three groups each comprising 6 patients. Group I received ARA, group II received BTX-A while group III received both treatment modalities. After 3 months, evaluation was done subjectively through Helkimo Anamnestic index (Ai) and objectively through electromyography (EMG) as well as MRI. RESULTS: Clinically, there was significant improvement in TMD symptoms in the three studied groups, while disc position was significantly improved in groups II and III as proved by MRI. CONCLUSIONS: Anterior repositioning appliance is effective in treating patients with disc displacement with reduction; however, BTX-A with and without ARA proved to be a more valuable treatment modality in the management of disc displacement with reduction.
https://adjalexu.journals.ekb.eg/article_57625_559d4f92a5497de934bedb8bc20ec5ad.pdf
2018-08-01
57
61
10.21608/adjalexu.2018.57625
Botulinum toxin
disc displacement
lateral pterygoid
electromyography
Mariam M.
Bahgat
1
Demonstrator of Prosthodontics, Faculty of Dentistry, Alexandria University
LEAD_AUTHOR
Nadia R.
El-Helw
2
Professor of Prosthodontics, Faculty of Dentistry, Alexandria University
AUTHOR
Ahmed M.
Abdelhamid
3
Professor of Prosthodontics, Faculty of Dentistry, Alexandria University
AUTHOR
Mohamed H.
Emam
4
Professor of Physical Medicine, Rheumatology and Rehabilitation, Faculty of Medicine, Alexandria University.
AUTHOR
1. Manfredini D, Piccotti F, Ferronato G,Guarda-Nardini L. Age peaks of different RDC/TMD diagnoses in a patient population. Journal of dentistry. 2010;38:392-9.
1
2. Schiffman E, Ohrbach R, Truelove E, Look J, Anderson G, Goulet J P et al. Diagnostic Criteria for Temporomandibular Disorders (DC/TMD) for Clinical and Research Applications. Journal of oral & facial pain and headache. 2014;28:6-27.
2
3. De Leeuw R. Internal derangements of the temporomandibular joint. Oral and maxillofacial surgery clinics of North America. 2008;20:159-68.
3
4. Ogütcen-Toller M. Sound analysis of temporomandibular joint internal derangements with phonographic recordings. Journal of Prosthetic Dentistry. 2003;89:311-8.
4
5. Dworkin S F,Leresche L. Research diagnostic criteria for temporomandibular disorders: review, criteria, examination, critique. . J Craniomandib Disord 1992;6:301- 55.
5
6. Naeije M, Te Veldhuis A, Te Veldhuis E, Visscher C,Lobbezoo F. Disc displacement within the human temporomandibular joint: a systematic review of a 'noisy annoyance'. Journal of oral rehabilitation. 2012;40:139-58.
6
7. Haggman-Henrikson B, Rezvani M,List T. Prevalence of whiplash trauma in TMD patients: a systematic review. Journal of oral rehabilitation. 2014;41:59-68.
7
8. Liu F,Steinkeler A. Epidemiology, diagnosis, and treatment of temporomandibular disorders. Dental clinics of North America. 2013;57:465-79.
8
9. Manfredini D. Etiopathogenesis of disk displacement of the temporomandibular joint: A review of the mechanisms. Indian J Dent Res 2009;20:212-21.
9
10. S.Fujita, T.Iizuka,W.Dauber. Variation of Heads of Lateral Pterygoid Muscle and Morphology of Articular Disc of Human Temporomandibular Joint-Anatomical and Histological Analysis. Journal of oral rehabilitation. 2001;28:560-71.
10
11. Kilic C, Dergin G, Yazar F, Kurt B, Kutoglu T, Ozan H et al. Insertions of the lateral pterygoid muscle to the disc-capsule complex of the temporomandibular joint and condyle. Turk J Med Sci. 2010;40:435-41.
11
12. Murray G, Bhutada M, Peck C, Phanachet I, Sae-Lee D,Whittle T. The human lateral pterygoid muscle. Arch Oral Biol. 2007;52:377-80
12
13. Bakke M, Møller E, Werdelin L M, Dalager T, Kitai N,Kreiborg S. Treatment of severe temporomandibular joint clicking with botulinum toxin in the lateral pterygoid muscle in two cases of anterior disc displacement. Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics. 2005;100:693-700.
13
14. Kamble V R,Mitra K R. Lateral pterygoid muscle attachment type is related to the pathogenesis ofanterior disc displacement, Disc degeneration and articular surface degeneration- A Magnetic Resonance Imaging assessment. International Journal of Biomedical Research. 2016;7: 423-9.
14
15. Hiraba, Katsunari, Hibino K, Hiranuma K,Negoro. T. EMG Activities of Two Heads of the Human Lateral Pterygoid Muscle in Relation to Mandibular Condyle Movement and Biting Force. J Neurophysiol. 2000;83:2120–37.
15
16. Herranz-Aparicio J, Vazquez-Delgado E, ArnabatDominguez J, Espana-Tost A,Gay-Escoda C. The use of low level laser therapy in the treatment of temporomandibular joint disorders. Review of the literature. Medicina Oral Patología Oral y Cirugia Bucal. 2013;18:e603-e12.
16
17. Conti P C R, Da Mota Correa A S, Lauris J R P,Stuginskibarbosa J. Management of painful temporomandibular joint clicking with different intraoral devices and counseling: a controlled study. Journal of applied oral science : revista FOB. 2015;23:529-35.
17
18. List T,Axelsson S. Management of TMD: evidence from systematic reviews and meta-analyses. Journal of oral rehabilitation. 2010;37:430-51.
18
19. Yadav S,Karani J T. The Essentials of Occlusal Splint Therapy. International Journal of Prosthetic Dentistry. 2011;2:12-21.
19
20. Madani A S,Mirmortazavi A. Comparison of three treatment options for painful temporomandibular joint clicking. Journal of Oral Science. 2011;53: 349-54.
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21. Persaud R, Garas G, Silva S, Stamatoglou C, Chatrath P,Patel K. An evidence-based review of botulinum toxin (Botox) applications in non-cosmetic head and neck conditions. JRSM short reports. 2013;4:10.
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22. Rady N A, Abdelhamid A M,El-Razik M K A. The Effect of Low Level Laser with Repositioning Appliance in the Management of Temporomandibular Joint Disc Displacement with Reduction. International Journal of Science and Research. 2016;5:1628-32.
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23. Mor N, Tang C,Blitzer A. Temporomandibular Myofacial Pain Treated with Botulinum Toxin Injection. Toxins. 2015;7:2791-800.
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24. Rossetto O, Pirazzini M,Montecucco C. Botulinum neurotoxins: genetic, structural and mechanistic insights. Nature reviews Microbiology. 2014;12:535-49.
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25. Pirazzini M, Rossetto O, Eleopra R,Montecucco C. Botulinum Neurotoxins: Biology, Pharmacology, and Toxicology. Pharmacological reviews. 2017;69:200-35.
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26. Rosales R L, Bigalke H,Dressler D. Pharmacology of botulinum toxin: differences between type A preparations. European Journal of Neurology 2006;13:2-10.
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27. Guarda-Nardini L, Manfredini D, Salamone M, Salmaso L, Tonello S,Ferronato G. Efficacy of Botulinum Toxin in Treating Myofascial Pain in Bruxers: A Controlled Placebo Pilot Study. Journal of craniomandibular practice. 2008;26:126-35.
27
28. Baker J S,Nolan P J. Effectiveness of Botulinum Toxin Type a for the Treatment of Chronic Masticatory Myofascial Pain: A Case Series. J Am Dent Assoc 2016;148:33-9.
28
29. Hassan M A, Emara A S, Hakam M M,Elfarmawy M I. MRI Monitoring of Disc Position Changes Following Botulinum Toxin Injection for Management of TMJ Clicking. Med J Cairo Univ. 2013;81:11-20.
29
30. Okeson J P. Management of Temporomandibular Disorders and Occlusion. 6th ed. St. Louis, Missouri, USA: Elsevier Mosby Co.; 2008.
30
31. Helkimo M. Studies of function and dysfunction of the masticatory system. Index of Anamnestic and clinical dysfunction and occlusal state. Swed Dent J 1974;67:101- 9.
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32. Alonso M B C C, Gamba T O, Lopes S L P C, Cruz A D, Freitas D Q,Haiter-Neto F. Magnetic resonance imaging of the temporomandibular joint acquired using different parameters. Journal of Morphological Sciences. 2014;31:103-9.
32
33. Kurita H, Oshtsuka A, Kurashina K,Kopp S. A study of factors for successful splint capture of anteriorly displaced temporomandibular joint disc with disc repositioning appliance. Journal of oral rehabilitation. 2001;28:651-7.
33
34. Mills K R. The basics of electromyography. Journal of neurology, neurosurgery, and psychiatry. 2005;76 Suppl 2:ii32-5.
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35. Kotz S, Balakrishnan N, Read C B,Vidakovic B. Encyclopedia of statistical sciences. 2nd ed. Hoboken, New Jersey, USA: John Wiley & Sons, Inc; 2006.
35
36. Gray R,Al-Ani Z. Risk management in clinical practice. Part 8: Temporomandibular disorders. British Dental Journal. 2010;209:433-49.
36
37. Murray G, Bhutada M, Peck C, Phanachet I, Sae-Lee D,Whittle T. Threshold properties of single motor units in superior head of human lateral pterygoid muscle. Aust Dent J 2004;49:2-8.
37
ORIGINAL_ARTICLE
EVALUATION OF SHEAR BOND STRENGTH OF HIGH-PERFORMANCE POLYMERS TO ITS RESIN VENEERING AND TO DENTIN (IN VITRO STUDY)
INTRODUCTION: : Looking through the wide range of prosthetic options High-performance polymers properties. Needs over layering resin veneer, bonded by a special adhesive, this adds an additional challenge to achieve adequate bond strength, also its bonding to tooth structure remains difficult. OBJECTIVES: To evaluate shear bond strength of CAD/CAM High-performance polymers (BioHPP) with its CAD/CAM veneering composite using two different adhesives, as well as to dentin using two types of cements. MATERIALS AND METHODS: This in vitro study, for Group I, twenty BioHPP discs with their CAD/CAM veneering composite, were milled and divided randomly into two subgroups (n =10) according to the adhesive system used. Subgroup IA: using DTK adhesive (dualhardening adhesive). Subgroup IB: using Combo.lign (dual-hardening adhesive). For Group II, twenty CAD/CAM High-performance polymers (BioHPP) discs were milled and divided into two subgroups according to the different cements used to lute to dentin surface. Subgroup IIA: using: RelyX Unicem resin cement, subgroup IIB: using Fuji Plus GI cement. After water storage, thermocycling (1200 cycles, 5°C/55°C) corresponding to one year of clinical service, all the specimens were subjected to shear force until failure and the results in the various groups were compared and statistically analyzed. Modes of failure were assessed. RESULTS: Mean SBS were as follows: subgroup IA (DTK adhesive 6.238), subgroup IB (combo.lign2.42), subgroup IIA (RelyX Unicem 2.07) and subgroup IIB (Fuji Plus 3.77). Mann-Whitney test demonstrated significant differences between the two subgroups in groups I and II (U= 2.0, P=.001) (U=17, P=.013) respectively. Stereomicroscope revealed that mixed and adhesive failure were the most dominant mode of failure. CONCLUSIONS MDP-Containing Self-adhesive Resin (DTK adhesive) is recommended as efficient adhesive to increase the shear bond strength of the veneering composite to BioHPP. Also Fuji Plus showed better bond strength than RelyX Unicem with BioHPP and dentin.
https://adjalexu.journals.ekb.eg/article_57626_19c770a46f69624ff9d558292e156450.pdf
2018-08-01
62
68
10.21608/adjalexu.2018.57626
Polyetheretherketone
PEEK
Shear Strength
Composite resins
Mahinour A.
Yousry
1
B.D.S 2009
LEAD_AUTHOR
Sanaa A.
Hussein
2
Professor of fixed prosthdontic, Faculty of Dentistry, Alexandria University
AUTHOR
Fayza H.
Al Abbassy
3
Assistant Professor of Dental Biomaterials, Faculty of Dentistry, Alexandria University
AUTHOR
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11.Stawarczyk B , Bahr N , Beuer F, Wimmer T, Eichberger M, Schmidlin P, et al. Influence of plasma pretreatment on shear bond strength of self-adhesive resin cements to polyetheretherketone. Clin Oral Invest. 2014;18:163-70.
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12.Hossein P, Maryam R, Dastjerdi S, Vahid S, Alaleh S, Atefeh R, et al. Effect of Different Surface Treatment on Shear Bond Strength of Veneering Composite to Polyetherketone Core Material. Inter J of Adv Biotec & Research. 2016;7:1116-21.
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13.Kern M, Lehmann F. Influence of surface conditioning on bonding to Polyetheretherketone (PEEK). Dent Mater. 2012;28:1280-3.
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14.Stawarczyk B, Eichberger M, Uhrenbacher J, Wimmer T, Edelhoff D, Schmidlin PR, et al. Three-unit reinforced polyetheretherketone composite FDPs: influence of fabrication method on load-bearing capacity and failure types. Dent Mater J. 2015;34:7-12.
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15.Stawarczyk B, Bahr N, Beuer F, Wimmer T, Eichberger M, Schmidlin PR, et al. Influence of plasma on shear bond strength of self-adhesive resin cements to polyetheretherketone. Clin Oral Investig. 2014;18:163- 70.
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16.Hallmann L, Mehl A, Sereno N, Hämmerle C. The improvement of adhesive properties of PEEK through different pretreatments. Applied Surface Science 2012;258:7213-8.
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17.Heimer S, Schmidlin PR, Stawarczyk B. Discoloration of PMMA, composite, and PEEK. Clin.Oral Investig. 2016;21:1191-200.
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18.Uhrenbacher J, Schmidlin PR, Keul C, Eichberger M, Roos M, Gernet W, et al. The effect of surface modification on the retention strength of polyetheretherketone crowns adhesively bonded to dentin abutments. J Prosthet Dent. 2014;112:1489-97.
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19.Stawarczyk B, Bahr N, Beuer F, Wimmer T, Eichberger M, Gernet W, et al. Influence of plasma pretreatment on shear bond strength of self-adhesive resin cements to polyetheretherketone. Clin Oral Investig. 2014;18:163- 70.
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20.Kern M, Lehmann F. Influence of surface conditioning on bonding to Polyetheretherketone (PEEK). Dent Mater. 2012;28:1280-3.
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21.Liebermann A, Wimmer T, Schmidlin PR, Scherer H, Loffler P, Stawarczyk B, et al. Physicomechanical characterization of polyetheretherketone and current esthetic dental CAD/CAM polymers after aging in different storage media. J. Prosthet Dent. 2016;115: 321-8.
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22.Stawarczyk B, Keul C, Beuer F, Roos M, Schmidlin PR. Tensile bond strength of veneering resins to PEEK: impact of different adhesives. Dent Mater J. 2013;32:441-8.
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23.Hallmann L, Mehl A, Sereno N, Hammerle C. The improvement of adhesive properties of PEEK through different pretreatments. Appl Surf Sci. 2012;258:7213- 8.
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24.Goyal RK, Tiwari AN, Negi YS. High performance polymer composites on poly ether ether ketone reinforced with Al2O3. J Appl Polym Sci.2006;100:4623–31.
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25. Keul C, Liebermann A, Schmidlin PR, Roos M, Sener B, Stawarczyk B, et al. Influence of PEEK surface modification on the retention of two veneering resin composites. J Adhes Dent. 2013;32:441-8.
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26. International organization for standardization. ISO standard 10477: dentistry-polymer-based crown and bridge materials Amendment;1996.
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27. Mirza R, Baig A, Gunaseelan R, Norsiah Y. Zygomatic implant-retained fixed complete denture for an elderly patient. Gerodontology J. 2012;29:1140–5.
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28. Stawarczyk B, Keul C, Beuer F, Roos M, Schmidlin PR. Tensile bond strength of veneering resins to PEEK: Impact of different adhesives. Dent Mater J. 2013; 32:441-8.
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29. Jin-Soo A, Young A, Yoon L, Deog-G. Shear bond strength of MDP-containing self-adhesive resin cement and Y-TZP ceramics: effect of phosphate monomercontaining primers. BioMed Research Int. 2015;389234:6-12.
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30. Peter T, Pontsa A. Attachment bonding technique using DTK adhesive. The Dent-Liner Summer. 2010;14:250- 5. 31. Patrick R, Schmidlin PR, Bogna St, Marco W, Thomas A, Christoph HF, et al. Effect of different surface pretreatments and luting materials on shear bond strength to PEEK. Dent mater. 2010;26:553-9.
29
32. Martin R, Verena P, Michael B, Nuno S, Carola K. Shear bond strength between veneering composite and PEEK after different surface modifications. Clin Oral Invest. 2015;19:739-44.
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33. Rosentritt M, Behr M, Thaller C, Rudolph H, Feilzer A. Fracture performance of computer-aided manufactured zirconia and alloy crowns. Quintessence Int. 2009; 40:655-62.
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34. Albert FE, El-Mowafy OM. Marginal adaptation and microleakage of Procera All Ceram crowns with four cements. Int J Prosthet. 2004;17:529-35.
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35. Camila S, Manthan P, Eric S. In vitro shear bond strength of three self-adhesive resin cements and a resin-modified glass ionomer cement to various prosthodontic substrates. Operat Dent. 2013;38:186-96.
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36. Capa N, Ozkurt Z, Canpolat C, Kazazoglu E. Shear bond strength of luting agents to fixed prosthodontic restorative core materials. Aust D J. 2009; 54:334-40.
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37. International Organization for Standardization. Dental materials - Testing of adhesion to tooth structure, ISO/TS11405; 2003.
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38. Uhrenbacher J, Schmidlin PR, Keul C, Eichberger M, Roos M, Gernet W, et al. The effect of surface modification on the retention strength of polyetheretherketone crowns adhesively bonded to dentin abutments. J Prosthet Dent .2014; 6:1489-97.
36
39. Vrochari AD, Eliades G, Hellwig E, Wrbas KT. Curing efficiency of four self-etching, self-adhesive resin cements. Dent Mater. 2009;25:1104-8.
37
40. Patrick R, Schmidlin PR, Christine K, Malgorzata R, Beatrice S, Bogna ST, et al. Influence of PEEK surface modification on surface properties and bond strength to veneering resin composites. J Adhes Dent. 2014;16:383-92.
38
ORIGINAL_ARTICLE
BIAXIAL FLEXURAL STRENGTH OF UN-SHADED AND SHADEDMONOLITHIC TRANSLUCENT ZIRCONIA
INTRODUCTION: The natural white color of zirconia together with the veneer chipping problem has led to the development of tooth colored monolithic (full-anatomic) zirconia. In order to optimize esthetics shading of monolithic zirconia were done by two main approaches, either by powder mixing method or by infiltration technique. The influence of infiltration technique on mechanical properties of zirconia has been reviewed previously, while the influence of powder mixing method on the mechanical properties of shaded zirconia, specially the biaxial flexural strength has not been widely studied before. OBJECTIVES: To evaluate and compare the biaxial flexural strength and the crystal structure of shaded CAD/CAM monolithic translucent zirconia by powder mixing method with un-shaded ones. MATERIALS AND METHODS: Twenty fully sintered discs of un-shaded [T 0] and shaded [T S] monolithic translucent zirconia of diameter 12 mm and thickness 1 mm has been divided into 2 parallel groups of 10 discs each. Their biaxial flexural strength was measured using a ball-on-ring test fixture and universal testing machine at room temperature. Statistical significance was measured using One-Way ANOVA test. Then crystallographic analysis was done for both groups using X-ray diffraction. Finally the nature of failures of the tested specimens was examined using confocal laser microscopy. RESULTS: Biaxial flexural strength test showed no significant difference between un-shaded and shaded specimens. X-ray diffraction spectrum only showed crystals of tetragonal zirconia with no evidence of neither monoclinic zirconia crystals nor coloring oxides crystal phases. Confocal laser microscopy images of both groups showed the classic fracture patterns of monolithic zirconia materials. CONCLUSIONS: shading of zirconia blocks by powder mixing methods does not significantly (P≥0.05) affect either biaxial flexural strength or crystallographic structure of monolithic translucent zirconia
https://adjalexu.journals.ekb.eg/article_57627_c1d4d67dcfcea4394daceecafc506d18.pdf
2018-08-01
69
73
10.21608/adjalexu.2018.57627
monolithic
Zirconia
Shaded
Biaxial Flexural Strength
Maher R.
Mohamed
1
Instructor of Fixed Prosthodontics, Department of Conservative Dentistry, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
LEAD_AUTHOR
Sanaa H.
Abdel Kader
2
Professor of Fixed Prosthodontics, Department of Conservative Dentistry, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
AUTHOR
Yehia H.
Aboushady
3
Professor of Fixed Prosthodontics, Department of Conservative Dentistry, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
AUTHOR
Mona M.
Abd El-latif
4
Professor of Fabrication Technology Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications, New Borg El-Arab City, Alexandria, Egypt.
AUTHOR
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2. Nothdurft FP, Pospiech PR. Clinical evaluation of pulpless teeth restored with conventionally cemented zirconia posts: a pilot study. J. Prosthet. Dent. 2006; 95(4):311-4.
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3. Manicone PF, Iommetti PR, Raffaelli L. An overview of zirconia ceramics: basic properties and clinical applications. J Dent. 2007; 35(11):819-26.
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4. Nakamura K, Kanno T, Milleding P, Örtengren U. Zirconia as a dental implant abutment material: a systematic review. Int J Prosthodont. 2010; 23(4).
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5. Wenz HJ, Bartsch J, Wolfart S, Kern M. Osseointegration and clinical success of zirconia dental implants: a systematic review. Int J Prosthodont. 2008; 21(1).
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6. Raigrodski AJ. Contemporary materials and technologies for all-ceramic fixed partial dentures: a review of the literature. J Prosthet Dent. 2004; 92(6):557-62.
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7. Lüthy H, Filser F, Loeffel O, Schumacher M, Gauckler LJ, Hammerle CH. Strength and reliability of four-unit allceramic posterior bridges. Dent Mater. 2005; 21(10):930-7.
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8. Denry I, Kelly JR. State of the art of zirconia for dental applications. Dent Mater. 2008; 24(3):299-307.
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9. Raigrodski AJ, Hillstead MB, Meng GK, Chung KH. Survival and complications of zirconia-based fixed dental prostheses: a systematic review. J Prosthet Dent. 2012; 107(3):170-7.
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10. Beuer F, Stimmelmayr M, Gueth JF, Edelhoff D, Naumann M. In vitro performance of full-contour zirconia single crowns. Dent Mater. 2012; 28(4):449-56.
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11. Johansson C, Kmet G, Rivera J, Larsson C, Vult Von Steyern P. Fracture strength of monolithic all-ceramic crowns made of high translucent yttrium oxide-stabilized zirconium dioxide compared to porcelain-veneered crowns and lithium disilicate crowns. Acta Odontol Scand. 2014; 72(2):145-53.
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12. Garvie RC, Hannink RH, Pascoe RT. Ceramic steel?. Nature. 1975; 258(5537):703-4.
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13. Kelly PM, Ball CJ. Crystallography of Stress‐Induced Martensitic Transformations in Partially Stabilized Zirconia. J. Am. Ceram. Soc. 1986; 69(3):259-64.
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14. Piconi C, Maccauro G. Zirconia as a ceramic biomaterial. Biomaterials. 1999; 20(1):1-25.
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15. Chevalier J, Gremillard L, Deville S. Low-temperature degradation of zirconia and implications for biomedical implants. Annu. Rev. Mater. Res. 2007; 37:1-32.
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16. Cales B. Colored zirconia ceramics for dental applications. InBIOCERAMICS-CONFERENCE.1998; 11:591-4.
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17. Shah K, Holloway JA, Denry IL. Effect of coloring with various metal oxides on the microstructure, color, and flexural strength of 3Y‐TZP. J Biomed Mater Res. 2008; 87(2):329-37.
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18. Hjerppe J, Närhi T, Fröberg K, Vallittu PK, Lassila LV. Effect of shading the zirconia framework on biaxial strength and surface microhardness. Acta Odontol Scand. 2008; 66(5):262-7.
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19. Kaya G. Production and characterization of self-colored dental zirconia blocks. CERAM INT. 2013 Jan; 39(1):511-7.
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20. Kuroda S, Shinya A, Yokoyama D, Harunori GO, Shinya A. Effects of coloring agents applied during sintering on bending strength and hardness of zirconia ceramics. Dent Mater J. 2013; 32(5):793-800.
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21. Pittayachawan P, McDonald A, Petrie A, Knowles JC. The biaxial flexural strength and fatigue property of Lava™ YTZP dental ceramic. Dent Mater. 2007; 23(8):1018-29.
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22. Spyropoulou PE, Kamposiora P, Eliades G, Papavasiliou G, Razzoog ME, Thompson JY, Smith RL, Bayne SC. Composition, phase analysis, biaxial flexural strength, and fatigue of unshaded versus shaded Procera zirconia ceramic. J Prosthet Dent. 2016; 116(2):269-76.
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23. Gale MS, Darvell BW. Thermal cycling procedures for laboratory testing of dental restorations. J Dent. 1999; 27(2):89-99.
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24. Bhamra G, Palin WM, Fleming GJ. The effect of surface roughness on the flexure strength of an alumina reinforced all-ceramic crown material. J Dent. 2002; 30(4):153-60.
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25. Timoshenko SP, Woinowsky-Krieger S. Theory of plates and shells. McGraw-hill; 1959.
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26. Anusavice KJ, Dehoff PH, Fairhurst CW. Materials Science: Comparative Evaluation of Ceramic-metal Bond Tests Using Finite Element Stress Analysis. J Dent Res. 1980; 59(3):608-13.
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27. Schatz C, Strickstrock M, Roos M, Edelhoff D, Eichberger M, Zylla IM, Stawarczyk B. Influence of specimen preparation and test methods on the flexural strength results of monolithic zirconia materials. Materials. 2016; 9(3):180.
27
28. Ebeid K, Wille S, Hamdy A, Salah T, El-Etreby A, Kern M. Effect of changes in sintering parameters on monolithic translucent zirconia. Dent Mater. 2014 Dec 31;30(12):e419-24.
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29. Church TD, Jessup JP, Guillory VL, Vandewalle KS. Translucency and strength of high-translucency monolithic zirconium oxide materials. Gen Dent. 2017; 65(1):48-52.
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30. Karakoca S, Yılmaz H. Influence of surface treatments on surface roughness, phase transformation, and biaxial flexural strength of Y‐TZP ceramics. J Biomed Mater Res. 2009; 91(2):930-37.
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31. Kosmač T, Oblak C, Jevnikar P, Funduk N, Marion L. The effect of surface grinding and sandblasting on flexural strength and reliability of Y-TZP zirconia ceramic. Dent Mater. 1999; 15(6):426-33.
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32. Curtis AR, Wright AJ, Fleming GJ. The influence of surface modification techniques on the performance of a Y-TZP dental ceramic. J Dent. 2006; 34(3):195-206.
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33. Luthardt RG, Holzhüter M, Sandkuhl O, Herold V, Schnapp JD, Kuhlisch E, Walter M. Reliability and properties of ground Y-TZP-zirconia ceramics. J Dent Res. 2002; 81(7):487-91.
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34. Nascente PA, de Souza DP. XPS characterisation of ceria-stabilised zirconia doped with iron oxide. Appl. Surf. Sci. 1999; 144:228-32.
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35. Wen N, Yi YF, Zhang WW, Deng B, Shao LQ, Dong LM, Tian JM. The color of Fe2O3 and Bi2O3 pigmented dental zirconia ceramic. InKey Engineering Materials. Trans Tech Publications .2010; 434:582-5.
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36. Quinn GD. Fractography of ceramics and glasses. Washington, DC: National Institute of Standards and Technology; 2007.
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37. Lameira DP, De Souza GM. Fracture strength of aged monolithic and bilayer zirconia-based crowns. BioMed Res. Int. 2015.
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38. Nakamura K, Mouhat M, Nergård JM, Lægreid SJ, Kanno T, Milleding P, Örtengren U. Effect of cements on fracture resistance of monolithic zirconia crowns. Acta Odontol Scand. 2016; 2(1):12-9.
38
39. Øilo M, Kvam K, Gjerdet NR. Load at fracture of monolithic and bilayered zirconia crowns with and without a cervical zirconia collar. J Prosthet Dent. 2016; 115(5):630-6.
39
ORIGINAL_ARTICLE
CLINICAL OUTCOME OF WEARING IMPLANT RETAINED OVER DENTURE IN PATIENTS WITH ATROPHIC ANTERIOR MAXILLA RECONSTRUCTED BY SUB NASAL LIFTING (CLINICAL STUDY)
INTRODUCTION: Maxillary implant overdenture has improved the quality of life for edentulous patients especially patients with atrophic maxilla. Sub-nasal lifting was introduced to solve the problem of severely atrophic anterior edentulous maxilla to allow insertion of dental implants. The type of attachment may influence the retention and stability of the prosthesis and thus, masticatory efficiency. Especially locator attachment is used with great success for improvement of implant-assisted over dentureOBJECTIVES:To evaluate clinically and radiographically the effect of wearing implant- retained over denture in patients with atrophic anterior maxilla which was reconstructed by nasal lifting. Patient satisfaction was also evaluated.MATERIALS AND METHODS: This clinical trial was conducted on seven patients with edentulous atrophic anterior maxilla rehabilitated by Sub-Nasal Lifting, restored with bilateral two implants and grafted with Platelet-Rich Fibrin. For each patient an implant- retained over denture with locator attachments was constructed. Patient assessment was done using different three method including clinical, radiographic evaluation and patient satisfaction at three intervals: at time of over denture insertion, 3months and 6 months of denture use.RESULTS: All patients showed increased bone density around dental implants with slight decrease in marginal bone height, no mobility of each implant was detected .All patient showed increased well satisfaction throughout the follow up periods.CONCLUSIONS Two implant-assisted maxillary over denture is an acceptable treatment for patients with atrophic anterior maxilla and it showed increased patient satisfaction and favorable clinical and radiographic findings.
https://adjalexu.journals.ekb.eg/article_57629_18a176eecb655597243d2a65e6a81718.pdf
2018-08-01
74
79
10.21608/adjalexu.2018.57629
Maxillary over denture
two implants
nasal lifting
patient satisfaction
peri-implant tissue
Yassmin A.
Tahamawy
1
Instructor at Department of Removable Prosthodontic, faculty of Dentistry, Alexandria University, Alexandria, Egypt.
LEAD_AUTHOR
Faten S.
Abbas
2
Professor of Prosthodontic, faculty of Dentistry, Alexandria University, Alexandria, Egypt.
AUTHOR
Nevien S.
Abdallah
3
Professor of oral&maxilla facial surgery, faculty of Dentistry, Alexandria University, Alexandria, Egypt.
AUTHOR
1) Tallgren A. The continuing reduction of the residual alveolar ridges in complete denture wearers: a mixedlongitudinal study covering 25 years. J Prosthet Dent. 2003;89:427-35 .
1
2) Emami E, de Souza RF, Kabawat M, Feine JS. The impact of edentulism on oral and general health. Int J Dent. 2013;2013:498-305.
2
3) Cawood JI, Stoelinga PJ, Blackburn TK. The evolution of preimplant surgery from preprosthetic surgery. Int J Oral Maxillofac Surg. 2007;36:377-85 .
3
4) Nkenke E, HahnM, Lell M, Wiltfang J, Schultze-Mosgau S, Stech B, et al. Anatomic site evaluation of the zygomatic bone for dental implant placement. Clin Oral Implants Res. 2003;14:72-9 .
4
5) Berg H, Carlsson GE, Helkimo M. Changes in shape of posterior parts of upper jaws after extraction of teeth and prosthetic treatment. J Prosthet Dent. 1975;34:262-8 .
5
6) Davo R, Malevez C, Rojas J, Rodriguez J, Regolf J. Clinical outcome of 42 patients treated with 81 immediately loaded zygomatic implants: a 12- to 42-month retrospective study. Eur J Oral Implantol. 2008;9(Suppl 1):141-50 .
6
7) Kondell PA, Nordenram A, Moberg LE, Eliasson S, Nyberg B. Reconstruction of the resorbed edentulous maxilla using autogenous rib grafts and osseointegrated implants. Clin Oral Implants Res. 1996;7:286-90 .
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8) Henry PJ. Future therapeutic directions for management of the edentulous predicament. J Prosthet Dent. 1998;79:100- 6.
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9) Ferrara ED, Stella JP. Restoration of the edentulous maxilla: the case for the zygomatic implants. J Oral Maxillofac Surg. 2004;62:1418-22 .
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10)Malo P, Nobre Mde A, Petersson U, Wigren S. A pilot study of complete edentulous rehabilitation with immediate function using a new implant design: case series. Clin Implant Dent Relat Res. 2006;8:223-32 .
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11)Klemetti E. Is there a certain number of implants needed to retain an overdenture? J Oral Rehabil. 2008;35 (Suppl 1):80-4.
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12)Bergendal T, Engquist B. Implant-supported overdentures: a longitudinal prospective study. Int J Oral Maxillofac Implants. 1998;13:253-62 .
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13)Kenney R, Richards MW. Photoelastic stress patterns produced by implant-retained overdentures. J Prosthet Dent.1998;80:559-6.
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14)Chikunov I, Doan P, Vahidi F. Implant-retained partial overdenture with resilient attachments. J Prosthodont. 2008;17:141-8 .
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15)Mazor Z, Lorean A, Mijiritsky E, Levin L. Nasal floor elevation combined with dental implant placement. Clin Implant Dent Relat Res. 2012;14:768-71.
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16)El-Ghareeb M, Pi-Anfruns J, Khosousi M, Aghaloo T, Moy P. Nasal floor augmentation for the reconstruction of the atrophic maxilla: a case series. J Oral Maxillofac Surg. 2012;70:e235-41.
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17)Ammar NA. Clinical evaluation of the implant retained over denture with two-equator attachments. M.S.c. Thesis. Department of Removable Prothodontics, Faculty of Dentistry, Alexandria University. Egypt; 2016.
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18)Inglehart M, Bagramian R. Oral health related quality of life: an introduction. In: Inglehart M, Bagramian R (eds). Oral health related quality of life. Chicago: Quintessence; 2002. 1-6.
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19)Papaspyridakos P, Chen CJ, Singh M, Weber HP, Gallucci GO. Success criteria in implant dentistry: a systematic review. J Dent Res. 2012;91:242-8.
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20)Khairnar M, Gaur V. Evidence of bone formation in the nasal floor around polished surface bi-cortical screw implants after indirect nasal lift in an atrophied maxilla: Cone beam computed tomography-based case report. J Indian Soc Periodontol. 2015;19:236-8.
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21)Choukroun J, Diss A, Simonpieri A, Girard MO, Schoeffler C, Dohan SL et al. Platelet-rich fibrin (PRF): a secondgeneration platelet concentrate. Part IV: clinical effects on tissue healing. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2006;101:e56-60.
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22)Ozan O, Ramolgu S. Effect of implant height differences on different attachment types and peri-implant bone in mandibular two-implant overdentures: 3D finite element study. J Oral Implantol. 2015:41:e50-9. 23)Ibrahim AM. Evaluation of low-profile attachments for implant-retained mandibular overdentures in restoring cases with limited inter-arch space. CDJ .2009;25:191-203.
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24)Griffiths GR. Bone density around endosseous implants in patients taking alendronate: a pilot study. Int J Periodontics Restorative Dent. 2012;32:e101-8.
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25)Sykaras N, Iacopino AM, Marker VA, Triplett RG, Woody RD. Implant materials, designs, and surface topographies: their effect on osseointegration. A literature review. Int J Oral Maxillofac Implants. 2000;15:675-90.
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26)Rismanchian M, Bajoghli F, Eblaghian G, Reihany A, Yousefshahi H. Stress analysis of ball and locator attachments and bone in overdenture supported by tissue level and bone level implants: a three-dimensional finite element analysis. J Int Oral Health. 2016;8:952-7.
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27)Rubin CT, Mcleod KJ. Promotion of bony ingrowth by frequency-specific, low amplitude mechanical strain. Clin Orthop Relat Res. 1994;298:165-74.
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28)Dos Santos MB, Da Silva Neto JP, Consani RL, Mesquita MF. Three dimensional finite element analysis of stress distribution in peri-implant bone with relineddentures and different heights of healing caps. J Oral Rehabil. 2011; 38:691-6.
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29)Kronstrom M, Widbom C, Soderfeldt B. Patient evaluation after treatment with maxillaryimplant-supported overdentures. Clin Implant Dent Relat Res. 2006;8:39-43.
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30)Kapur KK, Garrett NR, Hamada MO, Roumanas ED, Freymiller E, Han T ,et al. A randomized clinical trial comparing the efficacy of mandibular implant-supported overdentures and conventional dentures in diabetic patients. Part I: Methodology and clinical outcomes. J Prosthet Dent. 1998;79:555-69.
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31)Naert I, Quirynen M, Theuniers G, van Steenberghe D. Prosthetic aspects of osseointegrated fixtures supporting overdentures. A 4-year report. J Prosthet Dent. 1991;65:671-80 .
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32)Grossmann Y, Levin L. Success and survival of single dental implants placed in sites of previously failed implants. J Periodontol. 2007;78:1670-4.
31
ORIGINAL_ARTICLE
FLAPLESS VERSUS CONVENTIONAL FLAP APPROCH FOR DENTAL IMPLANT PLACEMENT IN THE MAXILLARY ESTHETIC ZONE
INTRODUCTION: Dental implantology, a special field of dentistry dealing with the rehabilitation of the damaged chewing apparatus due to loss of the natural teeth, is currently the most intensively developing field of dentistry. Missing teeth can be replaced using dental implants, which are inserted into root bearing parts of the mandible or maxilla. The success and long-term prognosis of implant prosthetic therapy depend primarily on the anchorage of the implant in the jaw bone OBJECTIVES: The main objective of this study was to assess clinically and radiographically the flapless versus conventional flap surgical technique in the maxillary esthetic zone. MATERIALS AND METHODS: This study was a randomized controlled clinical trial. It included 16 dental implants. The patients were divided in to two groups: group A, eight implants were placed in the maxillary aesthetic region using flapless procedure, and group B eight implants were placed in the maxillary esthetic region using flap procedure. All patients followed by clinical and radio-graphical evaluation over a period of 6 months. RESULTS: The flap technique showed statistically significant higher mean pain severity and duration, plaque index, probing depth, healing score than the flapless technique. The radiographic evaluation of the flapless implant surgery showed marked decrease in the amount of crestal bone loss in comparison to conventional flap. The mean horizontal and vertical bone loss around implants was significantly less in group A than in group B. There was no difference in bone density between both groups. CONCLUSIONS: The flapless implant surgery reduces the amount of crestal bone loss, soft tissue inflammation, pain, edema, bleeding and consequently soft tissue recession than the conventional flap technique
https://adjalexu.journals.ekb.eg/article_57628_7466260a0204fd5d1cc456b0f094d1c9.pdf
2018-08-01
80
85
10.21608/adjalexu.2018.57628
Flapless implant techniques
crestal bone loss
esthetic zone
bone density
Yaser A.
Shamsan
1
B.D.S. Faculty of Dentistry Thamar University, Yemen
LEAD_AUTHOR
Riham M.
Eldibany
2
Professor of Oral and Maxillofacial Surgery, Faculty of Dentistry Alexandria University
AUTHOR
Gaafar N.
El Halawani
3
Lecturer of Oral and Maxillofacial Surgery, Faculty of Dentistry Alexandria University.
AUTHOR
Rania A.
Fahmy
4
Lecturer of Oral Medicine and Periodontology, Faculty of Dentistry Alexandria University
AUTHOR
1. Henry PJ. Tooth loss and implant replacement. Aust Dent J. 2000;45:150-72.
1
2. Al-Sabbagh M. Implants in the esthetic zone. Dent Clin North Am. 2006;50:391-407.
2
3. Ozan O, Turkyilmaz I, Yilmaz B. A preliminary report of patients treated with early loaded implants using computerized tomography-guided surgical stents: flapless versus conventional flapped surgery. J Oral Rehabil. 2007;34:835-40.
3
4. Oh TJ, Shotwell J, Billy E, Byun HY, Wang HL. Flapless implant surgery in the esthetic region: advantages and precautions. Int J Periodontics Restorative Dent. 2007;27:27-33.
4
5. Nidhin R, Vasunni GK, Ajay O, Kurien B. Comparative Evaluation Of Crestal Bone Levels Following Implant Placement With Flap And Flapless Techniques In Posterior Edentulous Areas Of The Mandible-An In Vivo Study. IOSR-JDMS. 2014;13:95-9.
5
6. Lindeboom JA, van Wijk AJ. A comparison of two implant techniques on patient-based outcome measures: a report of flapless vs. conventional flapped implant placement. Clin Oral Implants Res. 2010;21:366-70.
6
7. Rocci A, Martignoni M, Gottlow J. Immediate Loading in the Maxilla Using Flapless Surgery, Implants Placed in Predetermined Positions, and Prefabricated Provisional Restorations: A Retrospective 3‐Year Clinical Study. Clin Implant Dent Relat Res. 2003;5:29-36.
7
8. Fortin T, Bosson JL, Isidori M, Blanchet E. Effect of flapless surgery on pain experienced in implant placement using an image guided system. Int J Oral Maxillofac Implants. 2006;21:298-304.
8
9. Plonka AB, Sheridan RA, Wang HL. Flap Designs for Flap Advancement During Implant Therapy: A Systematic Review. Implant Dent. 2017;26:145-52.
9
10.Jeong SM, Choi BH, Li J, Ahn KM, Lee SH, Xuan F. Bone healing around implants following flap and mini-flap surgeries: a radiographic evaluation3 between stage I and stage II surgery. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2008;105:293-6.
10
11.Jeong SM, Choi BH, Kim J, Xuan F, Lee DH, Mo DY, et al. A prospective clinical study of soft tissue conditions and marginal bone changes around dental implants after flapless implant surgery. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2011;111:41-6.
11
12.Pjetursson BE, Karoussis I, Bürgin W, Brägger U, Lang NP. Patients' satisfaction following implant therapy. Clin Oral Implants Res. 2005;16:185-93.
12
13.Atsuta I, Ayukawa Y, Kondo R, Oshiro W, Matsuura Y, Furuhashi A, et al. Soft tissue sealing around dental implants based on histological interpretation. J Prosthodont Res. 2016;60:3-11.
13
14.Kotz S, Balakrishnan N, Read CB, Vidakovic B. Encyclopedia of statistical sciences. 2nd ed. Hoboken, N.J.: Wiley-Interscience; 2006.
14
15.Kirkpatrick LA, Feeney BC. A simple guide to IBM SPSS statistics for version 20.0. Student ed. Belmont, Calif.: Wadsworth, Cengage Learning; 2013.
15
16.Chang M, Odman PA, Wennstrom JL, Andersson B. Esthetic outcome of implant-supported single-tooth replacements assessed by the patient and by prosthodontists. Int J Prosthodont. 1999;12:335-41.
16
17.Oh TJ, Yoon J, Misch CE, Wang HL. The causes of early implant bone loss: myth or science? J Periodontol. 2002;73:322-33.
17
18.Gomez-Roman G. Influence of flap design on peri-implant interproximal crestal bone loss around single-tooth implants. Int J Oral Maxillofac Implants. 2001;16:61-7.
18
19.Barunawarty Y. Assessment of the increased calcification of jaw bone with CT-Scan after dental implant placement. Imaging Sci Dent. 2011;41:59-62.
19
ORIGINAL_ARTICLE
EVALUATION OF BIAXIAL FLEXURAL STRENGTH AND TRANSLUCENCY OF MULTICHROMATIC TRANSLUCENT ZIRCONIA AND LITHIUM DISILICATE CERAMICS
INTRODUCTION: Full-contour (monolithic) zirconia restorations are gaining in popularity. High translucent zirconia materials and multilayered zirconia blocks might help to overcome the aesthetic drawbacks of traditional zirconia for fabrication of monolithic restorations OBJECTIVES: Were to evaluate the biaxial flexural strength and translucency of CAD/CAM: multichromatic ultra-translucent zirconia and comparing it with multichromatic high translucency Lithium Disilicate glass-ceramic. MATERIALS AND METHODS40 ceramic specimens were divided into two main groups; Group I: CAD/CAM multichromatic ultratranslucent Zirconia( UTML KATANA Zirconia) & Group II: Pressable multichromatic high translucent Lithium Disilicate glass-ceramic (e.max press multi). Each group was subdivided into two sub groups; sub group A: disc specimens (12mm diameter×1.5mm thickness) were fabricated (n=10) & thermocycled (500 cycles, 5°/55°C, 15 sec dwell time).Then, biaxial flexural strength was measured in MPa. Sub group B: rectangular specimens (12mm length × 10mm width × 1.5mm thickness) were fabricated (n=10). Spectrophotometric analysis was conducted to evaluate and compare the degree of translucency by translucency parameter (TP). Data were analyzed using student t-test & ANOVA with repeated measures test. RESULTS Statistical analysis of Biaxial flexural strength using student t-test revealed that group I (607.24 ± 71.79) showed higher statistically significant biaxial flexural strength values than group II (290.69 ± 41.19) ( p <0.001*). Results of translucency revealed that there were significant statistical differences between the two subgroups where IPS e.max Press Multi provided better translucency than UTML KATANA zirconia. CONCLUSIONS: Multi layered zirconia showed higher mechanical, but lower optical properties than lithium disilicate. The multi layered zirconia showed four layers with different light transmittance capabilities. It might therefore be useful for enhancing the aesthetic appearance of full-contour zirconia restorations made from this material in stress bearing areas.
https://adjalexu.journals.ekb.eg/article_57637_c1a119ab0b37849f7a7e3ef3e5ae7a6a.pdf
2018-08-01
86
93
10.21608/adjalexu.2018.57637
Biaxial Flexural Strength
translucency
Multichromatic zirconia
translucent zirconia
Lithium disilicate ceramics
Jihad G.
Hamed
1
Instructor at the Fixed Prosthodontics Department, Faculty of Dentistry, Alexandria University, Egypt.
LEAD_AUTHOR
Sameer I.
Bakry
2
Professor of Fixed Prosthodontics, Faculty of Dentistry, Alexandria University, Egypt.
AUTHOR
Sanaa A.
Hussein
3
Professor of Fixed Prosthodontics, Faculty of Dentistry, Alexandria University, Egypt.
AUTHOR
Fayza H.
Al Abbassy
4
Professor of Dental Biomaterials, Faculty of Dentistry, Alexandria University, Egypt.
AUTHOR
1. Conrad HJ, Seong WJ, Pesun IJ. Current ceramic materials and systems with clinical recommendations: a systematic review. J Prosthet Dent. 2007;98:389-404.
1
2. Rosenblum MA, Schulman A. A review of all-ceramic restorations. J Am Dent Assoc. 1997;128:297-307.
2
3. Guazzato M, Albakry M, Ringer SP, Swain MV. Strength, fracture toughness and microstructure of a selection of all ceramic materials. Part II. Zirconia-based dental ceramics. Dent Mater. 2004;20:449-56.
3
4. Beuer F, Stimmelmayr M, Gernet W, Edelhoff D, Guh JF, Naumann M. Prospective study of zirconia-based restorations: 3-year clinical results. Quintessence Int. 2010;41:631-7.
4
5. Fischer J, Stawarczyk B, Hammerle CH. Flexural strength of veneering ceramics for zirconia. J Dent. 2008;36:316-21.
5
6. Beuer F, Stimmelmayr M, Gueth JF, Edelhoff D, Naumann M. In vitro performance of full-contour zirconia single crowns. Dent Mater. 2012;28:449-56.
6
7. Spyropoulou PE, Giroux EC, Razzoog ME, Duff RE. Translucency of shaded zirconia core material. J Prosthet Dent. 2011;105:304-7.
7
8. Zhang F, Vanmeensel K, Batuk M, Hadermann J. Highly-translucent, strong and aging-resistant 3Y-TZP ceramics for dental restoration by grain boundary segregation. Acta Materialia Inc. 2015;16:215-22.
8
9. Baldissara P, Llukacej A, Ciocca L, Valandro FL, Scotti R. Translucency of zirconia copings made with different CAD/CAM systems. J Prosthet Dent. 2010;104:6-12.
9
10.Kurtulmus-Yilmaz S, Ulusoy M. Comparison of the translucency of shaded zirconia all-ceramic systems. Adv Prosthodont. 2014;6:415-22.
10
11.Pekkan G, Hekimoglu C. Evaluation of shear and tensile bond strength between dentin and ceramics using dualpolymerizing resin cement. J Prosthet Dent. 2009;102:242-52.
11
12.Addison O, Fleming GJ, Marquis PM. The effect of thermocycling on the strength of porcelain laminate veneer (PLV) materials. Dent Mater. 2003;19:291-7.
12
13.Timoshenko S, Woinowsky-Krieger S. Symmetrical bending of circular plates. Theory of plates and shells. 2nd ed. New York: McGraw-Hill; 87-121.
13
14.Johnston WM, Ma T, Kienle BH. Translucency parameter of colorants for maxillofacial prostheses. Int J Prosthodont. 1995;8:79-86. 15.ISO 6872. Dentistry–ceramic materials. Geneva: International Organization for Standardization; 2006.
14
16.Pieger S, Salman A, Bidra AS. Clinical outcomes of lithium disilicate single crowns and partial fixed dental prostheses: A systematic review. J Prosthet Dent. 2014;112:22-30.
15
17.Borges GA, Sophr AM, Goes MF, Sobrinho LC. Effect of etching and airborne particle abrasion on the microstructure of different dental ceramics. J Prosthet Dent. 2003;89:479-88. 18.Miyazaki T, Nakamura T, Matsumura H, Ban S, Kobayashi T. Current status of zirconia restorations. J Prosth Res. 2013;57:236-61.
16
19.Piconi C, Maccauro G. Zirconia as a ceramic biomaterial. Biomaterials. 1999; 20:1-25.
17
20.Kang SH, Chang J, Son HH. Flexural strength and microstructure of two lithium disilicate glass ceramics for CAD/CAM restoration in the dental clinic. Restor Dent Endod. 2013;38:134-40.
18
21.Johansson C, Kmet G, Rivera J, Larsson C, Vult Von Steyern P. Fracture strength of monolithic all-ceramic crowns made of high translucent yttrium oxidestabilized zirconium dioxide compared to porcelainveneered crowns and lithium disilicate crowns. Acta Odontol Scand. 2014;72:145-53.
19
22.Matsuzaki F, Sekine H, Honma S, Takanashi T, Furuya K, Yajima Y, et al. Translucency and flexural strength of monolithic translucent zirconia and porcelain-layered zirconia. Dent Mater J. 2015;34:910-7.
20
23.Church TD, Jessup JP, Guillory VL, Vandewalle KS. Translucency and strength of high-translucency monolithic zirconium oxide materials. Gen Dent. 2017;65:48-52.
21
24.Carrabba M, Keeling AJ, Aziz A, Vichi A, Fabian Fonzar R, Wood D, et al. Translucent zirconia in the ceramic scenario for monolithic restorations: A flexural strength and translucency comparison test. J Dent. 2017;60:70-6.
22
25.Corrado Piconi C, Condo SG, Kosmac T. Alumina- and zirconia-based ceramics for load-bearing applications. In: Shen JZ, Kosmač T (eds). Advanced ceramics for dentistry. Oxford: Butterworth-Heinemann; 2013. 219- 53.
23
26.Ueda K, Güth J, Erdelt K, Stimmelmayr M, Kappert H, Beuer F. Light transmittance by a multi-coloured zirconia material. J Dent Mater. 2015;34:310-4.
24
27.Lee YK, Cha HS, Ahn JS. Layered color of all-ceramic core and veneer ceramics. J Prosthet Dent. 2007;97:279- 86.
25
28.Denry IL. Recent advances in ceramics for dentistry. Crit Rev Oral Bio Med. 1996;7:134-43.
26
29.Yu B, Ahn JS, Lee YK. Measurement of translucency of tooth enamel and dentin. Acta Odontol Scand. 2009;67:57-64.
27
30.Heffernan MJ, Aquilino SA, Diaz-Arnold AM, Haselton DR, Stanford CM, Vargas MA. Relative translucency of six all-ceramic systems. Part II: core and veneer materials. J Prosthet Dent. 2002;88:10-5.
28
31.Vagkopoulou T, Koutayas SO, Koidis P, Strub JR. Zirconia indentistry: Part 1. Discovering the nature of an upcomingbioceramic. Eur J Esthet Dent. 2009;4:130-51.
29
32.Harada K, Raigrodski AJ, Chung KH, Flinn BD, Dogan S, Mancl LA. A comparative evaluation of the translucency of zirconias and lithium disilicate for monolithic restorations. J Prosthet Dent. 2016;116:257- 63.
30
33.Stawarczyk B, Frevert K, Ender A, Roos M, Sener B, Wimmer T. Comparison of four monolithic zirconia materials with conventional ones: Contrast ratio, grain size, four-point flexural strength and two-body wear. J Mech Behav Biomed Mater. 2016;59:128-38.
31
ORIGINAL_ARTICLE
EVALUATION OF LOW LEVEL LASER THERAPY ON THE STABILITY OF IMPLANTS USING RESONANCE FREQUENCY ANALYSIS (CLINICAL STUDY)
INTRODUCTION: The implant supported overdentures are considered a very successful treatment option for edentulous patients. Low level laser therapy (LLLT) has gained greater awareness in the last decade for implant surgery, reduces postoperative pain after surgery, promotes the osseointegration of implants, particularly, improving stability and enhances new bone formation without causing any tissue destruction. OBJECTIVES: : The aim of this study was the effect of low-level laser therapy on the biostimulation of bone repair by enhancing or accelerating osseointegration through stimulating the expression of osteoblastic phenotype in cells cultured on Titanium specimens. MATERIALS AND METHODS: 10 patients with age ranged between 45-60 years old were involved in the study. Each patient received 2 implants in the mandibular edentulous ridge at the canine area. The right side acted as study group has received one implant with a Semiconductor diode LASER (type IV) application, while the left acted as control one of same patients having normal loading in left mandibular canine area without LLLT application. All implants osseointegration was assessed by Magnetic Resonance Frequency Analysis to evaluate the implant stability. RESULTS Resonance Frequency Analysis evaluation revealed great difference in the stability after three months when irradiated with LLLT, implant stability quotient changes were found to be statistically significant between the two studied groups. (P2= <0.001). CONCLUSIONS: Effect of LLLT on bone remodeling is evident and improves implant stability.
https://adjalexu.journals.ekb.eg/article_57638_30a8bc476481a45aa6e5f39f3ed3f40d.pdf
2018-08-01
94
100
10.21608/adjalexu.2018.57638
Dental implants
Low level laser therapy
implant stability
Implant supported mandibular overdenture
Nada M.
Fahmy
1
Bachelor student of Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria University, Egypt, Dentist at Ministry of Health, Alexandria Egypt
LEAD_AUTHOR
Nevein SH.
Abdulla
2
Professor of Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria University, Egypt.
AUTHOR
Mervat M.
Khalil
3
Professor of Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria University, Egypt.
AUTHOR
Ahmed A.
AbdelHakim
4
Professor of Prosthodontic, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria University, Egypt
AUTHOR
1. Farre-Pages N, Auge-Castro ML, Alaejos-Algarra F, Mareque-Bueno J, Ferres-Padro E, Herrnandez-Alfaro F. Relation between bone density and primary implant stability. Med Oral Patol Oral Cir Buccal. 2011;16:62–7.
1
2. Veltri M, Balleri B, Goracci C, Giorgetti R, Balleri P, Ferrari M. Soft bone primary stability of 3 different miniscrews for orthodontic anchorage: a resonance frequency investigation. Am J Orthod Dentofacial Orthop. 2009;135:642–8.
2
3. Gonzalez-Garcia R, Monje F, Moreno-Garcia C. Predictability of the resonance frequency analysis in the survival of dental implants placed in the anterior nonatrophied edentulous mandible. Med Oral Patol Oral Cir Buccal. 2011;16:664–9.
3
4. Albrektsson T, Dahl E, Enbom L, Engevall S, Engquist B, Eriksson AR, et al. Osseointegrated oral implants. A Swedish multicenter study of 8139 consecutively inserted Nobelpharma implants. J Periodontol. 1988;59:287–96.
4
5. Meredith N, Alleyne D, Cawley P. Quantitative determination of the stability of the implant-tissue interface using resonance frequency analysis. Clin Oral Implants Res. 1996;7:261–7.
5
6. Penarrocha-Diago MA, Maestro-Ferrin L, Demarchi CL, Pennarocha-Oetra D, Pennarocha-Diago M. immediate versus non immediate placement of implants for full arch fixed restorations: A preliminary study. J Oral Maxillofac Surg. 2011;69:154–9.
6
7. Marković A, Calasan D, Colić S, Stojčev-Stajčić L, Janjić B, Mišić T. Implant stability in posterior maxilla: bone-condensing versus bone-drilling: a clinical study. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2011;112:557–63.
7
8. Mandić B, Lazić Z, Marković A, Mandić B, Mandić M, Djinić A. et al. Influence of postoperative low-level laser therapy on the osseointegration of self-tapping implants in the posterior maxilla: a 6-week split-mouth clinical study. Vojnosanit Pregl. 2015;72:233–40.
8
9. Herrero-Climent M, Albertini M, Rios-Santos JV, Lázaro- Calvo P, Fernández-Palacín A, Bullon P. Resonance frequency analysis-reliability in third generation instruments: Osstell mentor®. Med Oral Patol Oral Cir Bucal. 2012;17:801–6.
9
10. Kim JM, Kim SJ, Han I, Shin SW, Ryu JJ. A comparison of the implant stability among various implant systems: clinical study. J Adv Prosthodont. 2009;1:31–6.
10
11. Al-Jetaily S, Al-dosari AA. Assessment of Osstell and Periotest systems in measuring dental implant stability (in vitro study). Saudi Dent J. 2011;23:17–21.
11
12. Sennerby L, Roos J. Surgical determinants of clinical success of osseointegrated oral implants: a review of the literature. Int J Prosthodont. 1998;11:408–20.
12
13. Convissar RA. The biologic rationale for the use of lasers in dentistry. Dent Clin N Am. 2004;48:771–94.
13
14. Khadra M, Kasem N, Haanaes HR, Ellingsen JE, Lyngstadaas SP. Lyngstadaas SP. Enhancement of bone formation in rat calvarial bone defects using low-level laser therapy. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2004;97:693–700.
14
15. Pinheiro ALB, Junior FAL, Gerbi MEM, Ramalho LMP, Marzola C, Ponzi EAC. Effect of Low Level Laser Therapy on the Repair of Bone Defects Grafted with Inorganic Bovine Bone. Braz Dent J. 2003;14:177– 218.
15
16. Petri AD, Teixeira LN, Crippa GE, Beloti MM, de Ooliveira PT, Rosa AL. Effects of Low-Level Laser Therapy on Human Osteoblastic Cells Grown on Titanium. Braz Dent J. 2010;21:491–8.
16
17. Kotz S, Balakrishnan N, Read CB, Vidakovic B. Encyclopedia of statistical sciences. 2nd ed. Hoboken, NJ: Wiley-Interscience; 2006. 18. Kirkpatrick LA, Feeney BC. A simple guide to IBM SPSS statistics for version 20.0. Student ed. Belmont, Calif.: Wadsworth, Cengage Learning; 2013.
17
19. Glavind L, Loe H. Errors in the clinical assessment of periodontal destruction. J Periodont Res. 1967;2:180–9.
18
20. Branemark P, Zarb G, Albrektsson T. Tissue-integrated prostheses. Chicago: Quintessence; 1985. p 11–43.
19
21. Herrero-Climent M, Albertini M, Rios-Santos JV, Lázaro- Calvo P, Fernández-Palacín A, Bullon P. Resonance frequency analysis-reliability in third generation instruments: Osstell mentor®. Med Oral Patol Oral Cir Bucal. 2012;17:801–6.
20
22. Walsh LJ, Goharkhay K, Verheyen P, Moritz A. Low Level Laser Therapy. (LLLT) in Moritz A. Oral Laser Application. Quintessenz Verlags-Gmbh. 2006;521–39.
21
23. Strbac GD, Unger E, Donner R, Bijak M, Watzek G, Zechner W. Thermal effects of a combined irrigation method during implant site drilling. A standardized in vitro study using a bovine rib model. Clin Oral implants Res. 2012;25:665–74.
22
24. Lee J, Ozdoganlar OB, Rabin Y. An experimental investigation on thermal exposure during bone drilling. Med Eng Phys. 2012;34:1510–20.
23
25. Augustin G, Davila S, Udilljak T, Staroveski T, Brezak D, Babic S. Temperature changes during cortical bone drilling with a newly designed step drill and an internally cooled drill. Int Orthop. 2012;36:1449–56.
24
26. Martin E. Lasers in dental implantology. Dent Clin N Am. 2004;48:999–1015.
25
27. McKinney RV, Koth DL, Steflik DE, Robinson FG, Davis BC, Morris CF, et al. Crystal sapphire. Endosteal dental implants in humans: Ten years results. J Oral Implantol Res. 1967;2:180–6.
26
28. Ersanli S, Karabuda C, Beck F, Leblebicioglu B. Resonance frequency analysis of one-stage dental implant stability during the osseointegration period. J Periodontol. 2005;76:1066–71.
27
29. Zix J, Kesiler-Liechti G, Mericska-Stern R. Stability measurements of one-stage implants in the maxilla by means of resonance frequency analysis- a pilot study. Int J Oral Maxillofac Implants. 2005;20:747–52.
28
30. García-Morales JM, Tortamano-Neto P, Todescan FF, de Andrade JC Jr, Marotti J, Zezell DM. Stability of dental implants after irradiation with an 830-nm lowlevel laser: a double-blind randomized clinical study. Lasers Med Sci. 2012;27:703–11.
29
31. Sennerby L, Meredith N. Implant stability measurements using resonance frequency analysis: biological and biomechanicalaspects and clinical implications. Periodontol 2000. 2008;47:51–66.
30
32. Aparicio C, Lang NP, Rangert B. Validity and clinical significance of biomechanical testing of implant/bone interface. Clin Oral Implants Res. 2006;17 (Suppl 2):2– 7.
31
33. Karl M, Graef F, Heckmann S, Krafft T. Parameters of resonance frequency measurement values: a retrospective study of 385 ITI dental implants. Clin Oral Implants Res. 2008;19:214–8.
32
34. Sun G, Tuner J. Low-level laser therapy in dentistry. Dent Clin N Am. 2004; 48: 1061–76.
33
35. Kim JR, Kim SH, Kim IR, Park BS, Kim YD. Lowlevel laser therapy affects osseointegration in titanium implants: resonance frequency, removal torque, and histomorphometric analysis in rabbits. J Korean Assoc Oral Maxillofac Surg. 2016;42: 2–8.
34
36. Khadra M. The effect of low level laser irradiation on implant tissue interaction: in vivo and in vitro studies. Swed Dent J Suppl. 2005;172:1–6.
35
37. Guzzardella G, Torricelli P, Nicoli-aldini N, Giardino R. Osseointegration of endosseous ceramic implants after postoperative low power laser stimulation: an in vivo comparative study. Clin Oral Implants Res. 2003;14:226–32.
36
38. Pereira CL, Sallum EA, Nociti FH Jr, Moreira RW. The effect of low-intensity laser therapy on bone healing around titanium implants: a histometric study in rabbits. Int J Oral Maxillofac Implants. 2009;24:47–51.
37
ORIGINAL_ARTICLE
COMPARATIVE STUDY BETWEEN AUTOLOGOUS BLOOD AND PLATELET RICH PLASMA IN TREATMENT OF RECURRENT TEMPOROMANDIBULAR JOINT DISLOCATION
INTRODUCTION: Temporomandibular joint (TMJ) dislocation is an excessive forward movement of the condyle beyond the articular eminence with complete separation of the articular surfaces and fixation in that position. OBJECTIVES: the aim of the study was to compare clinically between the effect of autologous blood injection and platelet rich plasma injection in treatment of chronic recurrent temporomandibular joint dislocation through evaluation of mandibular range of motion. MATERIALS AND METHODS: Twenty patients with bilateral chronic recurrent condylar dislocation were included in this study. In group I 3mL autologous blood was injected. For group II 3ml of concentrated platelet rich plasma (PRP) was injected. Preoperative and postoperative assessment included a thorough history and physical examination to determine mandibular range of motion. RESULTS: Mandibular range of motion was significantly reduced post operatively in both groups, however on comparing the two groups there was statistically insignificant difference in mandibular range of motion. CONCLUSIONS: Both autologous blood and PRP injections are simple, low cost, and minimally invasive approaches which can be easily and safely injected. Both Autologous blood injection and PRP significantly decrease mandibular range of motion to normal range in patients with chronic recurrent TMJ dislocation.
https://adjalexu.journals.ekb.eg/article_57639_3d18d30a612f12171e67430b78d23d16.pdf
2018-08-01
101
107
10.21608/adjalexu.2018.57639
Temporomandibular joint
dislocation
platelet rich plasma
Blood
Menatallah M
Yasso
1
Bachelor of Faculty of Dentistry 2011, Alexandria University
LEAD_AUTHOR
Magued H
Fahmy
2
Professor of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria University.
AUTHOR
Nevine S
Mohamad
3
Professor of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria University.
AUTHOR
1.Beek M, Koolstra J, Van Ruijven L, Van Eijden T. Threedimensional finite element analysis of the human temporomandibular joint disc. J Biomech. 2000;33:307- 16.
1
2.Pupo YM, Pantoja LLQ, Veiga FF, Stechman-Neto J, Zwir LF, Farago PV, et al. Diagnostic validity of clinical protocols to assess temporomandibular disk displacement disorders: a meta-analysis. Oral Surg, Oral Med, Oral Pathol. 2016.
2
3.Conti P, Miranda J, Araujo C. Relationship between systemic joint laxity, TMJ hypertranslation, and intraarticular disorders. Cran J. 2000;18:192-7.
3
4.Chou K, Chao S, Wang T, Hsu L. Recurrent spontaneously reduced unilateral temporomandibular joint dislocation masquerading as a transient ischemic attack. JACME. 2016;6:26-8.
4
5.Pradhan L, Jaisani MR, Sagtani A, Win A. Conservative management of chronic TMJ dislocation: an old technique revived. J. Oral Maxillofac. Surg. 2015;14:267-70.
5
6.Gulses A, Bayar GR, Aydintug YS, Sencimen M, Erdogan E, Agaoglu R. Histological evaluation of the changes in temporomandibular joint capsule and retrodiscal ligaments following autologous blood injection. J CranioMaxillofacial Surg. 2013;41:316-20.
6
7.Nitzan DW. Temporomandibular joint “open lock” versus condylar dislocation: signs and symptoms, imaging, treatment, and pathogenesis. J. Oral Maxillofac. Surg. 2002;60:506-11.
7
8.da Silva CG, Pachêco-Pereira C, Porporatti AL, Savi MG, Peres MA, Flores-Mir C, et al. Prevalence of clinical signs of intra-articular temporomandibular disorders in children and adolescents: A systematic review and meta-analysis. J Am Dent Assoc. 2016;147:10-8. e8.
8
9.Machon V, Abramowicz S, Paska J, Dolwick MF. Autologous blood injection for the treatment of chronic recurrent temporomandibular joint dislocation. J. Oral Maxillofac. Surg. 2009;67:114-9.
9
10.Dutt CS, Ramnani P, Thakur D, Pandit M. Botulinum toxin in the treatment of muscle specific Oro-facial pain: a literature review. J. Oral Maxillofac. Surg. 2015;14:171-5.
10
11.Schiffman E, Look J, Hodges J, Swift J, Decker K, Hathaway K, et al. Randomized effectiveness study of four therapeutic strategies for TMJ closed lock. J Dent Res. 2007;86:58-63.
11
12.Boudreaux R, Spire E. Plication of the capsular ligament of the temporomandibular joint: a surgical approach to recurrent dislocation or chronic subluxation. J Oral Surg. 1968;26:330.
12
13.Puelacher W, Waldhart E. Miniplate eminoplasty: a new surgical treatment for TMJ-dislocation. J CranioMaxillofacial Surg. 1993;21:176-8.
13
14.Gould J. Shortening of the temporalis tendon for hypermobility of the temporomandibular joint. J Oral Surg. 1978;36:781.
14
15.Miller GA, Murphy EJ. External pterygoid myotomy for recurrent mandibular dislocation: Review of the literature and report of a case. Oral Surg, Oral Med, Oral Pathol. 1976;42:705-16.
15
16.James P. The surgical treatment of mandibular joint disorders. Ann R Coll Surg Engl. 1971;49:310.3
16
17.Armijo-Olivo S, Pitance L, Singh V, Neto F, Thie N, Michelotti A. Effectiveness of manual therapy and therapeutic exercise for temporomandibular disorders: systematic review and meta-analysis. Phys. Ther. 2015;96:9-25.
17
18.Matsumoto A, Matsumoto K, Kakimoto N, Yura Y. Arthroscopic findings after autologous blood injection in the treatment of recurrent temporomandibular joint dislocation. Oral Surg, Oral Med, Oral Pathol. 2015;27:225-7.
18
19.Yoshioka N, Shimo T, Ibaragi S, Sasaki A. Autologous Blood Injection for the Treatment of Recurrent Temporomandibular Joint Dislocation. Acta Med Okayama. 2016;70:291-4.
19
20.Varedi P, Bohluli B. Autologous blood injection for treatment of chronic recurrent TMJ dislocation: is it successful? Is it safe enough? A systematic review. J. Oral Maxillofac. Surg. 2015;19:243-52.
20
21.Hancı M, Karamese M, Tosun Z, Aktan TM, Duman S, Savaci N. Intra-articular platelet-rich plasma injection for the treatment of temporomandibular disorders and a comparison with arthrocentesis. J Cranio-Maxillofacial Surg. 2015;43:162-6.
21
22.Kiliç SC,Güngörmüş M, Sümbüllü MA. Is arthrocentesis plus platelet-rich plasma superior to arthrocentesis alone in the treatment of temporomandibular joint osteoarthritis? A randomized clinical trial. J. Oral Maxillofac. Surg. 2015;73:1473-83.
22
23.Hasson O, Nahlieli O. Autologous blood injection for treatment of recurrent temporomandibular joint dislocation. Oral Surg, Oral Med, Oral Pathol. 2001;92:390-3.
23
24.Aurora J, Singh G, Kumar D, Kumar R, Singh K. Autologous injection for the treatment of recurrent temporomandibular joint dislocation–a case report. J Indian Dent Assoc. 2011;5:846-8.
24
25.Candirli C, Yüce S, Cavus UY, Akin K, Cakir B. Autologous blood injection to the temporomandibular joint: magnetic resonance imaging findings. Imaging Sci Dent. 2012;42:13-8.
25
26.Bayoumi A, Al-Sebaei M, Mohamed K, Al-Yamani A, Makrami A. Arthrocentesis followed by intra-articular autologous blood injection for the treatment of recurrenttemporomandibular joint dislocation. J. Oral Maxillofac. Surg. 2014;43:1224-8.
26
27.Daif ET. Autologous blood injection as a new treatment modality for chronic recurrent temporomandibular joint dislocation. Oral Surg, Oral Med, Oral Pathol. 2010;109:31-6.
27
28.Triantafillidou K, Venetis G, Markos A. Short-term results of autologous blood injection for treatment of habitual TMJ luxation. J Cranio-Maxillofacial Surg. 2012;23:689- 92.
28
29.Cerza F, Carnì S, Carcangiu A, Di Vavo I, Schiavilla V, Pecora A, et al. Comparison between hyaluronic acid and platelet-rich plasma, intra-articular infiltration in the treatment of gonarthrosis. Am J Sports Med. 2012;40:2822-7.
29
30.Pihut M, Szuta M, Ferendiuk E, Zeńczak-Więckiewicz D.Evaluation of pain regression in patients with temporomandibular dysfunction treated by intra-articular platelet-rich plasma injections: a preliminary report. BioMed Res. Int. 2014;14:1-7.
30
31.Anitua E, Andia I, Ardanza B, Nurden P, Nurden AT. Autologous platelets as a source of proteins for healing and tissue regeneration. J Thromb Haemost. 2004;91:4-15.
31
ORIGINAL_ARTICLE
EFFECT OF THE USE OF THE HUMAN AMNIOTIC MEMBRANE IN HEALING OF SURGICALLY INDUCED SKIN DEFECTS IN RABBITS (HISTOPATHOLOGICAL STUDY)
INTRODUCTION: Soft tissue defects in Maxillofacial region remain significant health problems. The correct architecture and function of the vastly diverse tissues of this important anatomical region is mandatory. Amniotic membrane (AM) has been recently proposed as costeffective alternative skin graft. It provides significant benefits by improving the process of wound healing and minimizing scar formation. OBJECTIVES The aim of the present study was to assess clinically and histologically the effect of the use of the human amniotic membrane in healing of surgically induced skin defects in rabbits. MATERIALS AND METHODS: This study was performed on 14 White New Zealand rabbits on which skin defects were created on both sides of their back. The right side was grafted with human amniotic membrane (AM) freshly obtained and cryopreserved (side A), and the left side was left to heal spontaneously by secondary intention (side B). The rabbits were divided later in to three groups according to intervals of evaluation and sacrification (1st week, 2nd and 3rd week postoperative). The wounds were examined for gross morphological evaluation, histological and immunohistochemical studies. RESULTS Percentage of wound closure in AM grafted wounds was significantly higher than control wounds at 1st and 2nd week, but not significant at 3rd week healing wound (P<0.061). Histologically, the wounds of side (A) showed less inflammatory reaction and thicker newly formed epidermis layer. Collagen fibers were arranged in many directions and had higher density than those found in control wounds. Immunohistochemical evaluation showed higher expression of CD31 in side (A) than side (B) wounds indicating better angiogenesis in AM grafted wounds. CONCLUSIONS: AM graft enhanced and speeded up the healing process and wound closure with less scar healthy tissue.
https://adjalexu.journals.ekb.eg/article_57640_bd4e2af9fac7f027773033f335d11725.pdf
2018-08-01
108
115
10.21608/adjalexu.2018.57640
Amniotic membrane graft
skin defects
Wound healing
Alaa M.
Abdel Gawad
1
BDS, MS, Faculty of Dentistry, Alexandria University
LEAD_AUTHOR
Ahmed Mamdouh M.
Shaaban
2
Professor of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria University
AUTHOR
Adham A.
El Ashwah
3
Assistant Professor of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria University
AUTHOR
Mona AH.
Yehia
4
Professor of Histochemistry and Cell Biology, Histochemistry and Cell Biology department, Medical Research Institute, Alexandria University
AUTHOR
1. Perry M. Maxillofacial trauma--developments, innovations and controversies. Injury. 2009;40:1252-9.
1
2. Mamede AC, Carvalho MJ, Abrantes AM, Laranjo M, Maia CJ, Botelho MF. Amniotic membrane : from structure and functions to clinical applications. 2012;447–58
2
3. Ahmad Z, Nouraei R, Holmes S. Towards a classification system for complex craniofacial fractures. Br J Oral Maxillofac Surg. 2012;50:490-4.
3
4. Tuckett JW, Lynham A, Lee GA, Perry M, Harrington U. Maxillofacial trauma in the emergency department: a review. Surgeon. 2014;12:106-14.
4
5. Jalali M, Bayat A. Current use of steroids in management of abnormal raised skin scars. Surgeon. 2007;5:175-80.
5
6. Siemionow M, Papay F, Alam D, Bernard S, Djohan R, Gordon C, et al. Near-total human face transplantation for a severely disfigured patient in the USA. Lancet. 2009;374:203-9.
6
7. Gomez JH, Schumacher J, Lauten SD, Sartin EA, Hathcock TL, Swaim SF. Effects of 3 biologic dressings on healing of cutaneous wounds on the limbs of horses. Can J Vet Res. 2004;68:49-55.
7
8. Oh S, Havlen PR, Hussain N. A case of polymicrobial endocarditis caused by anaerobic organisms in an injection drug user. J Gen Intern Med. 2005;20:C1-2.
8
9. Tracey AK, Alcott CJ, Schleining JA, Safayi S, Zaback PC, Hostetter JM, et al. The effects of topical oxygen therapy on equine distal limb dermal wound healing. Can J Vet Res. 2014;55:1146-52.
9
10. Kili S, Tümurkaan N, Nsaldi S, Günay C, Üstek Ö, Yilmaz B. Comparison of the effects of some wound healing materials on full thickness skin wounds in rabbits. Turk J Vet Anim Sci. 2002;26:263-72.
10
11. Eaglstein WH, Mertz PM. “Inert” Vehicles do Affect Wound Healing. J Invest Dermatol. 1980;74:90-1.
11
12. Salehi SH, As’adi K, Mousavi SJ, Shoar S. Evaluation of Amniotic Membrane Effectiveness in Skin Graft Donor Site Dressing in Burn Patients. Indian J Surg. 2013;77:1-5.
12
13. Herndon DN, Branski LK. Contemporary Methods Allowing for Safe and Convenient Use of Amniotic Membrane as a Biologic Wound Dressing for Burns. Ann Plast Surg. 2017;78:S9-S10.
13
14. Elheneidy H, Omran E, Halwagy A, Al-Inany H, Al-Ansary M, Gad A. Amniotic membrane can be a valid source for wound healing. Int J Womens Health. 2016;8:225-31.
14
15. Ramos-Vara JA. Principles and methods of immunohistochemistry. Methods Mol Biol. 2011;691:83- 96.
15
16. Agbara R, Obiadazie AC, Fomete B, Omeje KU. Orofacial soft tissue reconstruction with locoregional flaps in a health resource-depleted environment: Experiences from Nigeria. Arch Plast Surg. 2016;43:265-71.
16
17. Kiliç S, Timurkaan N, Ünsaldi S, Güay C, Istek Ö, Yilmaz BB. Comparison of the effects of some wound healing materials on full thickness skin wounds in rabbits. Turkish J Vet Anim Sci. 2002;26:263-72.
17
18. Alrubaiy L, Al-Rubaiy KK. Review Article Skin Substitutes: A Brief Review of Types and Clinical Applications. Oman Med J. 2009;24:4-6.
18
19. Duarte IGL, Duval-Araujo I. Amniotic membrane as a biological dressing in infected wound healing in rabbits. Acta Cir Bras. 2014;29:334-9.
19
20. Jirsova K, Jones GLA2. Amniotic membrane in ophthalmology: properties, preparation, storage and indications for grafting—a review. Cell Tissue Bank. 2017;18:193-204.
20
21. Mamede AC, Carvalho MJ, Abrantes AM, Laranjo M, Maia CJ, Botelho MF. Amniotic membrane : from structure and functions to clinical applications. Cell Tissue Res. 2012;349:447-58.
21
22. Malhotra C, Jain AK. Human amniotic membrane transplantation: Different modalities of its use in ophthalmology. World J Transplant. 2014;4:111-21.
22
23. Jumper N, Paus R, Bayat A. Functional histopathology of keloid disease. Histol Histopathol. 2015;30:1033-57.
23
24. Cohen BE, Geronemus RG, Mcdaniel DH, Brauer JA. The Role of Elastic Fibers in Scar Formation and Treatment. Dermatol Surg. 2017;43:S19-S24.
24
25. Loeffelbein DJ, Baumann C, Stoeckelhuber M, Hasler R, Mücke T, Steinsträßer L, et al. Amniotic membrane as part of a skin substitute for full-thickness wounds: An experimental evaluation in a porcine model. J Biomed Mater Res B Appl Biomater. 2012;100:1245-56.
25
26. Niknejad H, Paeini-Vayghan G, Tehrani FA, Khayat-Khoei M, Peirovi H. Side dependent effects of the human amnion on angiogenesis. Placenta. 2013;34:340-5.
26
27. Yazdanpanah G, Paeini-Vayghan G, Asadi S, Niknejad H. The effects of cryopreservation on angiogenesis modulation activity of human amniotic membrane. Cryobiology. 2015;71:413-8.
27
28. Johnstone CC., Farley A. The physiological basics of wound healing. Nurs Stand. 2005;19:59-65.
28
29. Ogawa R. Keloid and Hypertrophic Scars Are the Result of Chronic Inflammation in the Reticular Dermis. Int J Mol Sci. 2017;18: E606.
29
ORIGINAL_ARTICLE
CLINICAL AND RADIOGRAPHIC EVALUATION OF IMMEDIATE IMPLANT PLACEMENT WITH AND WITHOUT "BONE RINGS" IN ESTHETIC ZONE
INTRODUCTION: Immediate implant placement is now accepted in clinical dentistry for reconstruction of partially or completely edentulous mandible or maxilla.OBJECTIVES: The aim of the study was to evaluate the role of Maxgraft bone rings on the marginal bone level around dental implants placed in fresh extraction sockets.MATERIALS AND METHODS: A randomized clinical trial was carried out on fourteen cases with freshly extracted sockets with age range 20 to 50 years. There were 2 groups, study group and control group, the sockets of the study group were filled with the new “Maxgraft bone ring” and an immediate placement of implants were carried out in the graft site, while the control group sockets had immediate implant placement alone. A clinical and radiological evaluation were carried out immediately postoperatively, after 3 & 6 months to assess the osteointegration of the implant placed and to measure the level of the marginal bone around the implant. After 6 months final prosthesis was delivered.RESULTS: Radiographic evaluation revealed increase in marginal bone level around implants placed in the Maxgraft bone rings than those placed alone with statistical significance (p1 =0.008)CONCLUSIONS: Increase in marginal bone level using the Maxgraft bone rings due to its osteoconductive properties supporting natural and controlled tissue remodeling together with the trabecular structure of the cancellous bone within the graft allow optimal graft revascularization, rapid formation of new bone tissue and bone remodeling.
https://adjalexu.journals.ekb.eg/article_57878_7c47832a69b8ddf162abc2da682192dc.pdf
2018-08-01
116
122
10.21608/adjalexu.2018.57878
alveolar bone
fish oil
Induced rheumatoid arthritis
Freund's complete adjuvant
Nihal A.
Elnebairy
1
LEAD_AUTHOR
Magued H.
Fahmy
2
AUTHOR
Nevien S.
Mohamed
3
AUTHOR
1. Schwartz-Arad D, Chaushu G. Placement of implants into fresh extraction sites: 4 to 7 years retrospective evaluation of 95 immediate implants. J Periodontol 1997; 68: 1110-6.
1
2. Schwartz-Arad D, Chaushu G. The ways and wherefores of immediate placement of implants into fresh extraction sites: A literature review. J Periodontol 1997; 68: 915- 23.
2
3. Schropp L, Isidor F. Timing of implant placement relative to tooth extraction. J Oral Rehabil 2007; 35: 33- 43.
3
4. Esposito M, Grusovin MG, Kwan S, Worthington HV, Coulthard P. Interventions for replacing missing teeth: bone augmentation techniques for dental implant treatment. Cochrane Database Syst Rev 2008; (3): CD003607.
4
5. Yukna RA, Castellon P, Saenz-Nasr AM, Owens K, Simmons J, Thunthy KH, et al. Evaluation of hard tissue replacement composite graft material. a ridge preservation/ augmantation material in conjunction with immediate hydroxyapatite coated dental implant. J Preiodontal 2003; 7: 679-86.
5
6. Martin K, Senpuku H, Hanada N, Ozawa H, Ejris S. Bone regeneration by recombinant human bone morphogenetic portion-2 around immediate implant: a pilot study in rates. J Oral Maxillofac Impl 2003; 18: 211-7.
6
7. Watzak G, Tepper G, Zechner W, Monov G, Busenlechner D, Watzek G. Bony press-fit closure of oro-antral fistulas: a technique for pre-sinus lift repair and secondary closure. J Oral Maxillofac Surg 2005; 63: 1288-94.
7
8. Stevens MR, Emam HA, El Alaily M, Sharawy M. Implant bone rings. One-stage threedimensional bone transplant technique: a case report. J Oral Implantol 2010; 1: 69-74.
8
9. Giesenhagen B, Yuksel O. Einzeitig behandeln mit Knochenringen. Vertikale Augmentation und Implantation in nur einem Eingriff. Implantol J 2010; 14: 50-2.
9
10. Kielhorn J, Roland B. Improved guided bone ring technique: a case report. EDI J 2011; 1: 42-3.
10
11. Blanco J, Mareque S, Linares A, Perez J, Munoz F, Ramos I. Impact of immediate loading on early bone healing at two-piece implants placed in fresh extraction sockets: an experimental study in the beagle dog. J Clin Periodontol 2013; 40: 421-9.
11
12. Boronat A, Carrillo C, Penarrocha M, Pennarocha M. Dental implants placed simultaneously with bone grafts in horizontal defects: a clinical retrospective study with 37 patients. Int J Oral Maxillofac Implants 2010; 25: 189-96.
12
13. Stevens MR, Emam HA, Alaily ME, Sharawy M. Implant bone rings. One-stage three-dimensional bone transplant technique: a case report. J Oral Implantol 2010; 36: 69-74.
13
14. Kotz S, Balakrishnan N, Vidakovic B. Encyclopedia of statistical sciences. 2nd ed. Hoboken, N.J.: WileyInterscience; 2006.
14
15. Kirkpatrick L, Feeney B. A simple guide to IBM SPSS statistics for version 20.0. Belmont, Calif.: Wadsworth, Cengage Learning; 2013.
15
16. Glavind L, Loe H. Errors in the clinical assessment of periodontal destruction. J Periodontal Res 1967; 2: 180- 4.
16
17. Marx RE. Bone and bone graft healing. Oral and maxillofacial surgery clinics of North America. 2007; 19(4):455-66.
17
18. Strbac GD, Unger E, Donner R, Bijak M, Watzek G, Zechner W. Thermal effects of a combined irrigation method during implant site drilling. A standardized in vitro study using a bovine rib model. Clin Oral Implants Res 2012; 25: 665-74.
18
19. Petrie CS, Williams JL. Comparative evaluation of implant designs: influence of diameter, length, and taper on strains in the alveolar crest—a three-dimensional finite-element analysis. Clin Oral Implants Res 2005; 16: 486-94.
19
20. Sim CP, Lang NP. Factors influencing resonance frequency analysis assessed by Osstell™ mentor during implant tissue integration: I. Instrument positioning, bone structure, implant length. Clinical oral implants research. 2010; 21(6):598-604.
20
21. Yoon HG, Heo SJ, Koak JY, Kim SK, Lee SY. Effect of bone quality and implant surgical technique on implant stability quotient (ISQ) value. J Adv Prosthodont 2011; 3: 10-5.
21
22. Meredith N. Assessment of implant stability as a prognostic determinant. Int J Prosthodont 1998; 11: 491- 501.
22
23. Sennerby I, Meredith N. Resonance frequency analysis: measuring implant stability and osseointegration. Compend Contin Educ Dent 1998; 19: 493-8.
23
24. Noumbissi SS, Lozada JL, Boyne PJ, Rohrer MD, Clem D, Kim JS, et al. Clinical, histologic, and histomorphometric evaluation of mineralized solventdehydrated bone allograft (Puros) in human maxillary sinus grafts. J Oral Implantol 2005; 31: 171-9.
24
25. Iasella JM, Greenwell H, Miller RL, Hill M, Drisko C, Bohra AA, et al. Ridge preservation with freeze-dried bone allograft and a collagen membrane compared to extraction alone for implant site development: a clinical and histologic study in humans. J Periodontol 2003; 74: 990-9.
25
26. Vance GS, Greenwell H, Miller RL, Hill M, Johnston H, Scheetz JP. Comparison of an allograft in an experimental putty carrier and bovine-derived xenograft used in ridge preservation: a clinical and histologic study in humans. Int J Oral Maxillofac Implants 2004; 19: 491-7.
26
27. Spin-Neto R, Stavropoulos A, Coletti FL, Faedda RS, Pereira LA, Marcantonio E. Graft incorporation and implant osseointegration following the use of autologous and fresh‐frozen allogeneic block bone grafts for lateral ridge augmentation. Clinical oral implants research. 2014; 25(2):226-33.
27
28. Waasdorp J, Reynolds MA. Allogeneic bone onlay grafts for alveolar ridge augmentation: a systematic review. International Journal of Oral & Maxillofacial Implants. 2010; 25(3).
28
29. Rose LF, Rosenberg E. Bone grafts and growth and differentiation factors for regenerative therapy: a review. Practical Procedures & Aesthetic Dentistry. 2001; 13(9):725-34.
29
30. Canuto RA, Pol R, Martinasso G, Muzio G, Gallesio G, Mozzati M. Hydroxyapatite paste Ostim®, without elevation of full‐thickness flaps, improves alveolar healing stimulating BMP‐and VEGF‐mediated signal pathways: an experimental study in humans. Clinical oral implants research. 2013; 24(A100):42-8.
30
31. Blanco J, Mareque S, Linares A, Perez J, Munoz F, Ramos I. Impact of immediate loading on early bone healing at two-piece implants placed in fresh extraction sockets: an experimental study in the beagle dog. J Clin Periodontol 2013; 40: 421-9.
31
ORIGINAL_ARTICLE
SURFACE ROUGHNESS AND SOLUBILITY OF A NANO-FILLED RESIN MODIFIED GLASS-IONOMER (INVITRO STUDY)
INTRODUCTION: Nanotechnology was used in the development of glass ionomer cements to provide some value added features not typically associated with this type of restorative materials. OBJECTIVES: This study was conducted to evaluate the surface roughness and solubility of a nano filled resin modified glass ionomer cement and to compare it with a conventional type of glass-ionomer cement. MATERIALS AND METHODS: Forty disc shaped specimens were prepared using Teflon split mold according to manufacturer instructions. Specimens were divided into two group :Group A (20 specimens prepared from Ketac Nano) and Group B (20 specimens prepared from Ketac Molar). Each group was subdivided into two subgroups of 10 specimens each. Twenty specimens from different subgroups were subjected to surface roughness test. The other twenty specimens from different subgroups were subjected to solubility test. Data were collected, tabulated and statistically analyzed. RESULTS: Concerning surface roughness; Ketac Nano showed statistically significantly lower surface roughness than Ketac Molar where the mean values were 0.27 ± 0.10 μm and 0.48 ± 0.14μm respectively. Concerning solubilty; Ketac Nano showed statistically significant lower solubility than Ketac molar where the mean values were 4.25 ± 1.87 and 12.16 ± 2.89 μg/mm3 respectively. CONCLUSIONS: It was concluded that the addition of nano-fillers to RMGI seemed to decrease its surface roughness and to improve but without completely eliminating the solubility of the nano-glass ionomers
https://adjalexu.journals.ekb.eg/article_57757_45aa4493c700e4406d544e9be4e4ad92.pdf
2018-08-01
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127
10.21608/adjalexu.2018.57757
Surface roughness
Solubility
nano glass ionomers
Rana S.
Galal
1
Bachelor of Dentistry, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
AUTHOR
Ahmed S.
El Kadi
2
Professor of Conservative Dentistry, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
AUTHOR
Mona M.
Ghoneim
3
Assistant Professor of Conservative Dentistry, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
AUTHOR
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