ORIGINAL_ARTICLE
COLORIMETRIC COMPARATIVE ANALYSIS OF MASTICATORY EFFEICIENCY IN COMPLETE DENTURE WEARERS WITH TWO DIFFERENT OCCLUSAL CONCEPTS
INTRODUCTION: The appropriate masticatory function is of major importance in complete denture wearers, since it influences the digestion of food and quality of life. Thus, the bilateral balanced occlusal concept is used to achieve greater masticatory efficiency. However, a critical review of the literature reveals that there is not sufficient scientific evidence to support bilateral balanced occlusion as the most appropriate occlusal concept in complete dentures.OBJECTIVES: The aim of this study was to compare clinically between complete denture wearers with bilateral balanced occlusion and canine guidance concepts through the evaluation of masticatory efficiency and patient satisfaction.MATERIALS & METHODS: A controlled crossover clinical trial was conducted. The sample was composed by 20 edentulous patients who wore sets of complete dentures with both occlusal concepts periods of one month. Objective data were collected through the masticatory efficiency test performed by the colorimetric method with the beads, in which capsules of a synthetic material enclosing FDA approved dye-containing granules were used. Subjective data were recorded by general satisfaction patient questionnaire.RESULTS: No significant statistical difference was found for the masticatory efficiency and patient satisfaction between the two occlusal concepts studied.CONCLUSIONS: Both bilateral balanced occlusion and canine guidance improved the masticatory efficiency in complete denture wearers.
https://adjalexu.journals.ekb.eg/article_59258_8eeb08ab9f210432699af773ed92ce25.pdf
2016-08-01
117
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10.21608/adjalexu.2016.59258
Bilateral balanced occlusions
canine guidance occlusion
Complete dentures
masticatory efficiency
patient satisfaction
Abbas
Faten S
1
Professor of Removable Prosthodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
LEAD_AUTHOR
Elgindy
Nazik A
2
LEAD_AUTHOR
AbdElmonem
Esraa M
3
LEAD_AUTHOR
1. Lucena SC, Gomes SG, Silva WJ, Cury AA. Patients’ satisfaction and functional assessment of existing complete dentures: correlation with objective masticatory function. J Oral Rehab 2011; 38: 440-6.
1
2. Neto AF, Junior WM, Adriana PC. Masticatory efficiency in denture wearers with bilateral balanced occlusion and canine guidance. J Braz Dent 2010; 21: 165-9.
2
3. Sipila K, Ensio K, Hanhela H. Occlusal characteristics in subjects with facial pain compared to a pain free control group. Cranio 2006; 24:245-51.
3
4. Zarb GA, Bolender CL, Eckert SE, Fenton AH, Jacob RF, Mericske-Stern R. Prosthodontic treatment for edentulous patients & complete dentures and implantsupported prostheses. St. Louis: Mosby; 2003, Chapter II.
4
5. Palla S. The interface of occlusion as a reflection of conflicts within prosthodontics. Int J Prostho 2005;18: 304-6.
5
6. Sutton AF, Glenny AM, McCord JF. Interventions for replacing missing teeth: denture chewing surface designs in edentulous people Cochrane Database. Syst Rev 2005; 25:49 -51.
6
7. Vergani CE, Giampaolo ET, Cucci AL. Composite occlusal surfaces for acrylic resin denture teeth. J Prosth Dent 1997;77:328-31.
7
8. Escudeiro Santos C, Freitas O, Spadaro ACC, Mestriner-Junior W. Development of a colorimetric system for evaluation of the masticatory efficiency. Braz Dent J 2006;17:95-9.
8
9. Sato Y, Hamada S ,Akagawa Y, Tsuga K. A method for quantifying overall satisfaction of complete denture patients. J Oral Rehabil 2000; 27:952-7.
9
10. Peroz I, Leuenberg V, Haustein I, Lange K. Comparison between balanced occlusion and canine guidance in complete denture wearers. Quintessence Int 2003; 34:607-12.
10
11. Heydecke G, Akkad AS, Wolkewitz M, Vogeler M . patient ratings of chewing ability from a randomized crossover trial: lingualized versus first premolar/canine-guided occlusion for complete dentures. Gerodontology 2007; 24:77-6.
11
12. Ahmed AR, Muneer MU, Hakeem S. Masticatory efficiency between balanced and lingualized occlusion in complete denture wearers. Pakistan Oral & Dental J 2013; 33:200-6.
12
13. Khafaga MM. Comparative study between balanced and unbalanced occlusion of complete dentures regarding masticatory performance and patient satisfaction. MSc Thesis, Department of Removable Prosthodontics, Faculty of Dentistry, Alexandria University, 1999.
13
14. Kayser AF, Van Der Hoeven JS. Colorimetric determination of the masticatory performance. J Oral Rehabil1977; 4:145-8.
14
15. Thornton LJ. Anterior guidance: Group function/canine guidance. A literature review. J Prosthet Dent 1990; 64:479-2.
15
16. Winkler-Ortman HR. Complete denture occlusion In: Winkler S editor. Essentials of complete denture prosthodontics.2nd edition. Littletwon (MA): PSG Publishing Company; 1988.p217-49.
16
17. Manns A, Chan C, Miralls R. Influence of group function and canine guidance on electromyographic activity of elevator muscles. J Prosthet Dent 1987; 57:494-1.
17
18. Ohguri T, Kawano F, Ichikawa T, Matsumoto N. Influence of occlusal scheme on the pressure distribution under a complete denture. Int J Prosthodont. 1999; 12:353-8.
18
19. Rehmann P, Balkenol M, Ferger P, Wostmann B. Influence of the occlusal concept of complete dentures on patient satisfaction in the initial phase after fitting: bilateral balanced occlusion vs. canine guidance. Int J Prosthodont. 2008; 21:60-1.
19
ORIGINAL_ARTICLE
EFFECT OF TWO DIFFERENT BLEACHING CONCENTRATIONS ON MICROLEAKAGE AND MICROHARDNESS OF TOOTH-COLORED RESTORATIONS (AN IN VITRO STUDY)
INTRODUCTION: Bleaching may exert some negative effects on existing resin restorations.OBJECTIVES: To evaluate the effect of bleaching with 14% and 40% hydrogen peroxide on microleakage and microhardness of different tooth-colored restorations.MATERIALS AND METHODS: MICROLEAKAGE TEST: Class V cavities were prepared on labial surfaces of 60 extracted human upper central incisor teeth. The teeth were divided into 2 groups: Group I: restored with FiltekZ350XT composite, Group II: restored with Fuji II LC resin-modified glass ionomer. The teeth were thermocycled, each group was subdivided into 3 subgroups: subgroup A: was not bleached and served as control, subgroup B: bleached with 14% hydrogen peroxide gel and subgroup C: bleached with 40% hydrogen peroxide gel. The teeth were immersed in dye, sectioned, and dye penetration was scored at the incisal and cervical walls under stereomicroscope. Data were analyzed using Repeated Measures ANOVA, Wilcoxon and Mann-Whitney tests.MICROHARDNESS TEST: 20 specimens (2mm thickness and 10mm diameter) were prepared from Filtek Z350XT composite, and Fuji II LC RMGI. Specimens were subjected to thermocycling, after which the microhardness of each specimen was measured before bleaching. Specimens were subdivided in to 2 subgroups, and bleached with 14%, 40% hydrogen peroxide gels. After bleaching, microhardness of each specimen was measured again. Data were analyzed using independent sample t-test and paired t-test.RESULTS: For microleakage test; statistical analysis showed no significant differences in microleakage of the tested composite and RMGI subgroups for incisal or cervical margins. For microhardness; the results showed significant increase in mean microhardness for the composite and RMGI subgroups bleached with 14% hydrogen peroxide, whereas, composite and RMGI subgroups bleached with 40% hydrogen peroxide showed significant decrease in mean microhardness.CONCLUSION: Bleaching did not have an effect on microleakage of Filtek Z350XT composite and Fuji II LC RMGI restorations, while they affected the microhardness of these restorations.
https://adjalexu.journals.ekb.eg/article_59261_91d02527da0ff6b1783f9fb1d550f443.pdf
2016-08-01
122
130
10.21608/adjalexu.2016.59261
Dental bleaching
Microleakage
Microhardness
tooth-colored restorations
Rashwan
Ahmed T.
1
Master student of Operative Dentistry, Department of Conservative Dentistry, Faculty of Dentistry, Alexandria University, Egypt.
LEAD_AUTHOR
El-Sharkawey
Mahmoud M.
2
LEAD_AUTHOR
Kamar
Adel A.
3
LEAD_AUTHOR
Abdel-Fattah
Wegdan M. M.
4
LEAD_AUTHOR
1. Jacob AS, Kumar NMD. Effect of pre and post operative bleaching on microleakage of amalgam and composite restoration using 10% carbamide peroxide - an invitro study. J Conserv Dent 2007; 10: 33-7.
1
2. Ayad N, Bedewi A, Hanafy S, Saka S. Effect of bleaching on microleakage, surface hardness, surface roughness, and color change of an ormocer and a conventional hybrid resin composite. Internet J Dent Sci 2008; 6: 1-8.
2
3. Sulieman M. An overview of bleaching techniques. 1. History, chemistry, safety and legal aspects. Dental Update 2004; 31:608-16.
3
4. Joiner A. The bleaching of teeth: A review of the literature. J Dent 2006; 34: 412-9.
4
5. Shinohara MS, Rodrigues JA, Pimenta LA. In vitro microleakage of composite restorations after nonvital bleaching. Quintessence Int 2001; 32: 413-7.
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6. Bailey SJ, Swift Jr EJ. Effects of home bleaching products on composite resins. Quint Int 1992; 23: 489-94.
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7. Kim JH, Lee YK, Lim BS, Rhee SH, Yang HC. Effect of tooth whitening strips and films on changes in color and surface roughness of resin composites. Clin Oral Invest 2004; 8: 118-22.
7
8. Lee JH, Kim HI, Kim KH, Kwon YH. Effects of bleaching agent on the fluoride release and microhardness of dental materials. J Biomed Mater Res 2002; 63: 535-41.
8
9. Jung CB, Kim HI, Kim KH, Kwon YH. Influence of 30% hydrogen peroxide bleaching on compomers in their surface modifications and thermal expansion. Dent Mater J 2002; 21: 396-403.
9
10. Rolland SL, Carrick TE, Walls AW, McCabe JF. Dentin decontamination using Chloramine T perior to experiments involving bacteria. Dent Mater 2007; 23: 1468-72.
10
11. Abo El Naga A.I, Yousef MK. Effect of different bleaching methods and storage periods on nanoleakage. J Am Sci 2015; 11: 71-7.
11
12. Heintze SD, Ruffieux C, Rousson V. Clinical performance of cervical restorations-a meta-analysis. Dent Mater 2010; 26: 993-1000.
12
13. Leclaire CC, Blank LW, Hargrave JW, Pelleu GB Jr. Use of a two-stage composite resin fill to reduce microleakage below the cementoenamel junction. Oper Dent 1988; 13: 20-3.
13
14. Geerts SO, Seidel L, Albert AI, Gueders AM. Microleakage after Thermocycling of Three Self-Etch Adhesives under Resin-Modified Glass-Ionomer Cement Restorations. Int J Dent 2010; 2010: 728453.
14
15. Malkondu Ö, Yurdagüven H, Say EC, Kazazoğlu E, Soyman M. Effect of bleaching on microhardness of esthetic restorative materials. Oper Dent 2011; 36: 177-86.
15
16. Wattanapayungkul P, Yap AU. Effects of in-office bleaching products on surface finish of tooth-colored restorations. Oper Dent 2003; 28: 15-9.
16
17. Brown W, Jacobs H, Thompson R. Thermal fatigue in teeth. J Dent Res 1972; 51: 461-7.
17
18. Klukowska MA, White DJ, Gibb RD, Garcia-Godoy F, Garcia-Godoy C, Duschner H. The effects of high concentration tooth whitening bleaches on microleakage of Class V composite restorations. J Clin Dent 2008; 19: 14-7.
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19. Khoroushi M, Fardashtaki SR. Effect of light-activated bleaching on the microleakage of Class V tooth-colored restorations. Oper Dent 2009; 34: 565-70.
19
20. Sartori N, Junior SM, Filho AM, Arcari GM. Effect of dental bleaching on the microleakage of Class V composite restorations. Rev Odonto Ciênc 2009; 24: 279-82.
20
21. HashemiKamangar SS, Ghavam M, Mahinfar N, Fard MJK. Effect of 30% hydrogen peroxide on marginal integrity of silorane-based versus methacrylate-based composite restorations. J Dent 2014; 11: 545-53.
21
22. Crim GA. Post-operative bleaching: Effect on microleakage. Am J Dent 1992; 5: 109-12.
22
23. Owens BM, Rowland CC, Brown DM, Covington JS III. Postoperative dental bleaching: effect of microleakage on Class V tooth colored restorative materials. J Tenn Dent Assoc. 1998; 78: 36-40.
23
24. Ulukapi H, Benderli Y, Ulukapi I. Effect of pre- and postoperative bleaching on marginal leakage of amalgam and composite restorations. Quintessence Int 2003; 34: 505- 8.
24
25.Jacob AS, Kumar NMD. Effect of pre and post operative bleaching on microleakage of amalgam and composite restoration using 10% carbamide peroxide – an invitro study. J Conserv Dent 2007; 10: 33-7.
25
26. Moosavi H, Ghavamnasiri M, Manari V. Effect of postoperative bleaching on marginal leakage of resin composite and resin-modified glass ionomer restorations at different delayed periods of exposure to carbamide peroxide. J Contemp Pract 2009; 10: 9-16.
26
27.Cehreli ZC, Yazici R, García-Godoy F. Effect of home-use bleaching gels on fluoride releasing restorative materials. Oper Dent 2003; 28: 605-9.
27
28. Sarrett DC, Coletti DP, Peluso AR. The effects of alcoholic beverages on composite wear. Dent Mater 2000; 16: 62-7.
28
29. O’Brien WJ. Dental materials and their selection. 3rd ed. Chicago: Quintessence 2002; 18.
29
30. Plotino G, Buono L, Grande NM, Pameijer CH, Somma F. Nonvital tooth bleaching: A review of the literature and clinical procedures. J Endod 2008; 34: 394-407.
30
31.Rosa RS, Balbinot CE, Blando E, Mota EG, Oshima HM, Hirakata L, Pires LA et al. Evaluation of mechanical properties on three nanofilled composites. Stomatologija 2012; 14: 126-30.
31
32. Türker SB, Biskin T. The effect of bleaching agents on the microhardness of dental aesthetic restorative materials. J Oral Rehabil 2002; 29: 657-61.
32
33.Cooley RL, Burger MK. Effect of carbamide peroxide on composite resins. Quintessence Int 1991; 22: 817-21.
33
34.Campos I, Briso AL, Pimenta LA, Ambrosano G. Effects of bleaching with carbamide peroxide gels on microhardness of restoration materials. J Esthet Restor Dent 2003; 15: 175- 83.
34
35. Mujdeci A, Gokay O. Effect of bleaching agents on the microhardness of tooth-colored restorative materials. J Prosthet Dent 2006; 95: 286-9.
35
36. Polydorou O, Hellwig E, Auschill TM. The effect of different bleaching agents on the surface texture of restorative materials. Oper Dent 2006; 31: 473-80.
36
37. Hanning C, Duong S, Becker K, Brunner E, Kahler E, Attin T. Effect of bleaching on subsurface microhardness of composite and a polyacid modified composite. Dent Mat 2007; 23: 198-203.
37
38. Taher NM. The effect of bleaching agents on the surface hardness of the tooth colored restorative materials. J Contemp Dent Pract 2005; 6: 18-26.
38
39.Bahannan SA. Effects of different bleaching agent concentrations on surface roughness and microhardness of esthetic restorative materials. Saudi J Dent Rese 2015; 6: 124-8.
39
40. Polydorou O, Mönting JS, Hellwig E, Auschill TM. Effect of in-office tooth bleaching on the microhardness of six dental esthetic restorative materials. Dent Mat 2007; 23: 153-8.
40
ORIGINAL_ARTICLE
SHEAR BOND STRENGTH OF CERAMIC LAMINATE VENEERS TO ENAMEL AND ENAMEL–DENTINE COMPLEX BONDED WITH DIFFERENT ADHESIVE LUTING SYSTEMS
INTRODUCTION: The laminate veneer technique bonds a thin ceramic laminate to the tooth surface with resin cements to restore anterior teeth. A vital importance is attributed to the strength and durability of the adhesion complex.OBJECTIVES: The aim of this study was to evaluate the shear bond strength of ceramic laminate veneers to two different tooth substrates (Enamel and Enamel–Dentine complex), with different luting systems.MATERIALS AND METHODS: Sixty extracted human maxillary central incisor teeth were used, and randomly divided according to tooth surface preparations into two main groups (n=30); Group A in Enamel (E) only and Group B in Enamel-Dentin complex (E-D), each group was then subdivided according to the type of resin cement received (Light cure LC or Dual cure DC) into four sub groups of 15 specimens each: Group A 1:(E + LC); Group A 2:(E + DC); Group B 1:(E-D + LC); Group B 2:(E-D + DC). Ceramic discs (IPS e.max Press, IvoclarVivadent) of 4 mm in diameter and 2 mm in height were luted to the tooth surfaces by using the resin cement (Variolink Esthetic®, IvoclarVivadent) according to the manufacturers’ instructions. Shear bond strength test was performed in a universal testing machine at 0.5 mm/min until bonding failure. Failure modes were determined under a stereomicroscope, and fracture surfaces were evaluated with a scanning electron microscope. The data were statistically analyzed (p≤0.05).RESULTS: Group B 1 exhibited the lowest bond strength value(9.12±4.86MPa). There was statistically no difference among A 1,A 2 and among B 1,B 2(p>0.05).Group A 2 exhibited the highest bond strength value (14.73± 5.83MPa).CONCLUSIONS: The type of tooth substrate affected the shear bond strength of the ceramic laminate veneers to the 2 different types of tooth structures (Enamel, Enamel–Dentine complex).
https://adjalexu.journals.ekb.eg/article_59263_e05c78bc3b2e30aef06510bb29a2aaa5.pdf
2016-08-01
131
137
10.21608/adjalexu.2016.59263
Porcelain laminate veneers
ceramic discs
Dentine exposure
Adhesives
Elkamhawy
Nada H.
1
Master student of Operative Dentistry, Department of Conservative Dentistry, Faculty of Dentistry, Alexandria University, Egypt.
LEAD_AUTHOR
Elkadi
Ahmed S.
2
AUTHOR
Alabbassy
Fayza H.
3
LEAD_AUTHOR
1. Peumans M, Van Meerbeek B, Lambrechts P, Vanherle G. Porcelain veneers: A review of the literature. J Dent 2000; 28:163–77.
1
2. Peumans M, Van Meerbeek B, Yoshida Y, Lambrechts P, Vanherle G. Porcelain veneers bonded to tooth structure: an ultra-morphological FE SEM examination of the adhesive interface. Dent Mat 1999;15: 105–19.
2
3. Zarone F, Epifania E, Leone G, Sorrentino R, Ferrari M. Dynamometric assessment of the mechanical resistance of porcelain veneers related to tooth preparation: a comparison between two techniques. J Prosthetic Dent 2006; 95: 354– 63.
3
4. Rouse JS, Robbins JW. Porcelain veneers. In: Summitt JB, Robbins JW, Hilton TJ, Schwartz RS, editors. Fundamentals of operative dentistry: a contemporary approach. 3rd ed. Chicago: Quintessence Publishing Co, Inc 2006; 463–87.
4
5. Omar H, Atta O, El-Mowafy O, Khan SA. Effect of CADCAM porcelain veneers thickness. on their cemented color. J Dent 2010; 38: 95–9.
5
6. Troedson M, Derand T. Shear stresses in the adhesive layer under porcelain veneers. A finite element method study. Acta Odontol Scand 1998; 56: 257–62.
6
7. Sadowsky SJ. An overview of treatment considerations for esthetic restorations: a review of the literature. J Prosthetic Dent 2006; 96:433–42.
7
8. Lin TM, Liu PR, Ramp LC, Essig ME, Givan DA, Pan YH. Fracture resistance and marginal discrepancy of porcelain laminate veneers influenced by preparation design and restorative material in vitro. J Dent 2012; 40: 20-29.
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9. Brunton PA, Richmond S, Wilson NH. Variations in the depth of preparations for porcelain laminate veneers. Eur J Prosthodont Restor Dent 1997; 5: 89–92.
9
10. Nattress BR, Youngson CC, Patterson CJ, Martin DM, Ralph JP. An in vitro assessment of tooth preparation for porcelain veneer restorations. J Dent 1995; 23: 165–70.
10
11. Van Meerbeek B, Perdigao J, Lambrechts P, Vanherle G. The clinical performance of adhesives. J Dent 1998; 26: 1– 20.
11
12. Xing W, Jiang T, Ma X, Liang S, Wang Z, Sa Y, et al. Evaluation of the esthetic effect of resin cements and try-in pastes on ceromer veneers. J Dent 2010; 38: e87–e94.
12
13. Stangel I, Ellis TH, Sacher E. Adhesion to tooth structure mediated by contemporary bonding systems. Dent Clin North Am 2007; 51:677–94.
13
14. De Munck J, Van Landuyt K, Peumans M, Poitevin A, Lambrechts P, Braem M, et al. A critical review of the durability of adhesion to tooth tissue: methods and results. J Dental Res 2005; 84: 118–32.
14
15. Ozturk E, Hickel R, Bolay S, Ilie N. Micromechanical properties of veneer luting resins after curing through ceramics. Clin Oral Investig 2012; 16: 139-46.
15
16. ALGhazali N, Laukner J, Burnside G, Jarad FD, Smith PW, Preston AJ. An investigation into the effect of try-in pastes, uncured and cured resin cements on the overall color of ceramic veneer restorations: an in vitro study. J Dent 2010; 38: e78–86.
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17. Turgut S, Bagis B. Colour stability of laminate veneers: an in vitro study. J Dent 2011; 39: e57–64.
17
18. Perdigao J. Dentin bonding as a function of dentin structure. Dent Clin North Am 2002; 46:277–301.
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19. Pekkan G, Hekimoglu C. Evaluation of shear and tensile bond strength between dentin and ceramics using dualpolymerizing resin cements. J Prosthetic Dent 2009; 102: 242–52.
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20. Ozturk E, Bolay S, Hickel R, Ilie N. Shear bond strength of porcelain laminate to enamel, dentine and enamel – dentine complex bonded with different adhesive luting systems. J Dent. 2013; 41:97-105.
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21. Scherrer SS, Cesar PF, Swain MV. Direct comparison of the bond strength results of the different test methods: a critical literature review. Dent Mat 2010;26:78–93.
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22. Kotz S, Balakrishnan N, Read CB, Vidakovic B. Encyclopedia of statistical sciences. 2nd ed. Hoboken, N.J.: Wiley-Interscience; 2006.
22
23. Kirkpatrick LA, Feeney BC. A simple guide to IBM SPSS statistics for version 20.0. Student ed. Belmont, Calif.: Wadsworth, Cengage Learning; 2013.
23
24. Lee JJ, Nettey-Marbell A, Cook Jr A, Pimenta LA, Leonard R, Ritter AV. Using extracted teeth for research: the effect of storage medium and sterilization on dentin bond strengths. The Journal of the American Dental Association 2007;138:1599–603.
24
25. Della Bona A, van Noort R. Shear vs. tensile bond strength of resin composite bonded to ceramic. Journal of Dental Research 1995; 74(9):1591-6.
25
26.Rosenstiel SF, Land MF, Crispin B. Dental luting agents: A review of the current literature. J Prosthet Dent. 1998; 80:280-301.
26
27. Kelly JR, Campbell SD, Bowen HK. Fracture-surface analysis of dental ceramics. J Prosthet Dent 1989; 62: 536- 41.
27
28. Abo-Hamar SE, Hiller KA, Jung H, Federlin M, Friedl KH, Schmalz G. Bond strength of a new universal self-adhesive resin luting cement to dentin and enamel. Clinical Oral Investigations 2005;9:161–7.
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29.Bair J, Bhatt S, Perry R, Kugel G. Shear bond strength of resin cements to dentin and enamel. J Dent Res 2013, 92 (Spec Iss A): 3042.
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30.Chiba Y, Rikuta A, Yasuda G, Yamamoto A, Takamizawa H, Ando S, et al. Influence of moisture conditions on dentin bond strength of single-step self-etch adhesive systems. J Oral Sci 2006; 48: 131-7.
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31. Lafuente JD, Chaves A, Carmiol R. Bond strength of dualcured resin cements to human teeth. J Esthet Dent 2000; 12: 105-10.
31
32. Hikita K, Van Meerbeek B, De Munck J, Ikeda T, Van Landuyt K, ve digerleri MT. Bonding effectiveness of adhesive luting agents to enamel and dentin. Dent Mat 2007;23:71–80.
32
33. Pekkan G, Hekimoglu C. Evaluation of shear and tensile bond strength between dentin and ceramics using dualpolymerizing resin cements. Journal of Prosthetic Dentistry 2009;102:242–52.
33
34. Eick JD, Gwinnett AJ, Pashley DH, Robinson SJ. Current concepts on adhesion to dentin. Critical Reviews of Oral Biology & Medicine 1997;8:306–35.
34
35.Rouse JS, Robbins JW. Porcelain veneers. In: Summitt JB, Robbins JW, Hilton TJ, Schwartz RS, editors. Fundamentals of operative dentistry: a contemporary approach. 3rd ed. Chicago: Quintessence Publishing Co, Inc 2006; 463–87.
35
36. Magne P, Douglas WH. Porcelain veneers: dentin bonding optimization and biomimetic recovery of the crown. International Journal of Prosthodontics 1999;12:111–21.
36
37. Armstrong SR, Boyer DB, Keller JC. Micro-tensile bond strength testing and failure analysis of two dentin adhesives. Dent Mat 1998;14:44-50.
37
38.Cho BH, Dickens SH. Effects of the acetone of single solution dentin bonding agents on the adhesive layer thickness and the micro-tensile bond strength. Dent Mat 2004;20:107-15.
38
39. Akgungor G, Akkayan B, Gaucher H. Influence of ceramic thickness and polymerization mode of a resin-luting agent on early bond strength and durability with a lithium disilicate-based ceramic system. Journal of Prosthetic Dentistry 2005;94:234–41.
39
ORIGINAL_ARTICLE
MICROLEAKAGE OF CLASS II COMPOSITE RESTORATIONS WITH DIFFERENT RESTORATIVE TECHNIQUES (AN IN VITRO STUDY)
INTRODUCTION: Microleakage has been regarded as a primary concern for the use of composites in class II cavity restorations. Many techniques have attempted to minimize this leakage.OBJECTIVES: The purpose of this in-vitro study was to evaluate the microleakage in class II cavities restored with composite resins applied with either incremental, bulk fill or Sonic fill techniques.MATERIALS AND METHODS: Forty sound human permanent lower molars extracted for periodontal problems. Occluso-mesial class II cavity was prepared in each tooth, with the cervical margin of the proximal box located 1 mm occlusal to the cemento-enamel junction (CEJ). The prepared teeth were randomly distributed to four groups with 10 specimens each (n=10). In each group, a self-etch adhesive was applied, followed by composite resin that was applied in either incremental, bulk fill or sonic fill technique; Group I: [Optibond all in one +Herculite XRV Ultra], Group II: [ Optibond all in one+ Premise flowable + Herculite XRV Ultra], Group III: [Single bond universal+Filtek bulkfill + Filtek Z250XT], Group IV: [ Optibond all in oneSonicFill]. All restored specimens were soaked in basic fuchsin dye for 24 hours, and sectioned mesiodistally to detect the extent of dye penetration by stereomicroscope. Data were collected and statistically analyzed.RESULTS: The cervical margins showed more microleakage than the occlusal margins. Sonicfill in Group IV recorded the lowest mean value of microleakage scores among the four groups occlusally (mean=0.10), whereas Premise Flowable + Hercuilte XRV Ultra in Group II showed the highest mean value (1.20) . Sonic fill in Group 1V recorded the lowest mean value of microleakage scores among the four groups cervically (mean= 0.80), whereas Premise Flowable + Hercuilte XRV Ultra in Group II showed the highest mean value (1.60). Kruskall-Wallis test proved no significant difference among groups. Mann Whitney test proved significant difference between Group II and Group IV occlusally.CONCLUSIONS: Sonic fill showed the best results in terms of marginal seal
https://adjalexu.journals.ekb.eg/article_59268_a23b6def19b3b1628844f5ba66182548.pdf
2016-08-01
138
145
10.21608/adjalexu.2016.59268
Microleakage
Class II
Composite
Tayel
Dalia M
1
Bachelor of Dentistry, Faculty of Dentistry, Misr university for science and Technology, 6 October, Egypt.
LEAD_AUTHOR
El-Sharkawy
Mahmoud M
2
LEAD_AUTHOR
Mahmoud
El-Sayed M
3
LEAD_AUTHOR
1. Alonso RC, Sinhoreti MA, Correr Sobrinho L, Consani S, Goes MF. Effect of resin liners on the microleakage of class V dental composite restorations. J Appl Oral Sci 2004; 12: 56-61.
1
2. Bayındır YZ, Bayındır F, Zorba YO, Turgut H. Influence of different bonding systems and soft-start polymerization marginal gap formation. Mater Res Innovat 2008; 12: 166-71.
2
3. Simi B, Suprabha B. Evaluation of microleakage in posterior nanocomposite restorations with adhesive liners. J Conserv Dent 2011; 14: 178-81.
3
4. Kwon Y, Ferracane J, Lee IB. Effect of layering methods, composite type, and flowable liner on the polymerization shrinkage stress of light cured composites. Dent Mater 2012; 28: 801-9.
4
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8. Nagpal R, Manuja N, Tyagi SP, Singh UP. In vitro bonding effectiveness of self-etch adhesives with different application techniques: a microleakage and scanning electron microscopic study. J Conserv Dent 2011; 14: 258-63.
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9. Cenci M, Demarco F, de Carvalho R. Class II composite resin restorations with two polymerization techniques: relationship between microtensile bond strength and marginal leakage. J Dent 2005; 33: 603-10.
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10. Duarte S Jr, Saad JR. Marginal adaptation of class 2 adhesive restorations. Quintessence Int 2008; 39: 413-9.
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11. Tarle Z, Attin T, Marovic D, Andermatt L, Ristic M, Tauböck TT. Influence of irradiation time on subsurface degree of conversion and microhardness of high-viscosity bulk-fill resin composites. Clin Oral Investig 2015; 19: 831-40.
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12. Ilie N, Kebler A, Duner J. Influence of various irradiation processes on the mechanical properties and polymerization kinetics of bulk-fill resin based composites. J Dent 2013; 41: 695-702.
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13. Surefil SDR Flow: Compilation of Studies - Dentsply. Available at: https://www.dentsply.com/content/dam/dentsply/master/ document/2/2015-SureFil-SDR-flow-Literature-Reviewzvcxypk-en-1509.pdf.
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14. Leprince JG, Palin WM, Vanacker J, Sabbsgh J, Devaux J, Leloup G. Physico-mechanical characteristics of commercially available bulk-fill composites. J Dent 2014; 42: 993-1000.
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15. Sybron Dental Specialties Inc., “SonicFillTM System,” 2011. Available at: www.sonicfill.eu.
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16. Cakir D, Sergent R, Burgess JO. Polymerization Shrinkage—A Clinical Review. Inside Dentistry. 2007. Available at: https://www.dentalaegis.com/id/2007/09/polymerizationshrinkage-clinical-review#sthash.lPsiEd1b.dpuf
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17. Vichi A, Margvelashvili M, Goracci C, Papacchini F, Ferrari M. Bonding and sealing ability of a new selfadhering flowable composite resin in class I restorations. Clin Oral Investig 2013; 17: 1497-506.
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18. Tuloglu N, Tunc E, Ozer S, Bayrak S. Shear bond strength of self-adhering flowable composite on dentin with and without application of an adhesive system. J Appl Biomater Funct Mater 2014; 12: 97-101.
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19. Küçükeşmen C, Sönmez H. Microleakage of class v composite restorations with different bonding systems on fluorosed teeth. Eur J Dent 2008; 2: 48-58.
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20. Eick, JD, Gwinnett AJ, Pashley DH, Robinson SJ. Current concepts on adhesion to dentin. Crit Rev Oral Biol Med 1997; 83: 306-35.
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21. Demarco FF, Ramos OL, Mota CS, Formolo E, Justino LM. Influence of different restorative techniques on microleakage in Class II cavities with gingival wall in cementum. Oper Dent 2001; 26: 253-9.
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22. Rajbaran S, Dannheimer M, De Wet F. The effect of thermocycling on the determination of microleakage in permite amalgam restorations. SADJ 2009; 64: 394-6.
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23. Gogna R, Jagadis S, Shashikal K. A comparative in vitro study of microleakage by a radioactive isotope and compressive strength of three nanofilled composite resin restorations. J Conserv Dent 2011; 14: 128-31.
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24. Wahab FK, Shaini FJ, Morgano SM. The effect of thermocycling on microleakage of several commercially available composite Class V restorations in vitro. J Prosthet Dent 2003; 90: 168-74.
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25. Fabianelli A, Goracci C, Ferrari M. Sealing ability of packable resin composites in class II restorations. J Adhes Dent 2003; 5: 217-23.
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26. Moazzami SM, Sarabi N, Hajizadeh H, Majidinia S, Li Y, Meharry MR, et al. Efficacy of four lining materials in sandwich technique to reduce microleakage in class II composite resin restorations. Oper Dent 2014; 39: 256-63.
26
27. Poskus LT, Placido E, Cardoso PE. Influence of adhesive system and placement technique on microleakage of resinbased composite restorations. J Adhes Dent 2004; 6: 227- 32.
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28. Coutinho M, Trevizam NC, Takayassu RN, Leme AA, Soares GP. Distance and protective barrier effects on the composite resin degree of conversion. J Contemp Clin Dent 2013; 4: 152-5.
28
29. Poggio C, Chiesa M, Scribante A, Mekler J, Colombo M. Microleakage in Class II composite restorations with margins below the CEJ: in vitro evaluation of different restorative techniques. Med Oral Patol Oral Cir Bucal 2013; 18: 793-8.
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30. Kemp-Scholte CM, Davidson CL. Complete marginal seal of Class V resin composite restorations effected by increased flexibility. J Dent Res 1990; 69: 1240-3.
30
31. Hatrick CD, Eakle WS. Dental Materials: Clinical Applications for Dental Assistants and Dental Hygienists. Canada: Elsevier Health Sciences, 2015. 384.
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32. Kalmowicz J, Phebus JG, Owens BM, Johnson WW, King GT. Microleakage of Class I and II Composite Resin Restorations Using a Sonic-resin Placement System. Oper Dent 2015; 40: 653-61.
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33. Kapoor N, Bahuguna N, Anand S. Influence of composite insertion technique on gap formation. J Conserv Dent 2016; 19: 77-81.
33
34. Kim RJ, Kim YJ, Choi NS, Lee IB. Polymerization shrinkage, modulus, and shrinkage stress related to toothrestoration interfacial debonding in bulk-fill composites. J Dent 2015; 43: 430-9.
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35. Pecie R, Onisor I, Krejci I, Bortolotto T. Marginal adaptation of direct class II composite restorations with different cavity liners. Oper Dent 2013; 38: E210-20.
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36. Hernandes NM, Catelan A, Soares GP, Ambrosano GM, Lima DA, Marchi GM, et al. Influence of flowable composite and restorative technique on microleakage of class II restorations. J Investig Clin Dent 2014; 5: 283-8.
36
37. Oliveira LC, Duarte S Jr, Araujo CA, Abrahão A. Effect of low-elastic modulus liner and base as stress-absorbing layer in composite resin restorations. Dent Mater 2010; 26: e159- 69.
37
38. Malmström HS, Schlueter M, Roach T, Moss ME. The effect of thickness of flowable resins on marginal leakage in class 2 composite restoration. Oper Dent 2002; 27: 373-80.
38
39. Labella R, Lambrechts P, Van Meerbeek B, Vanherle G. Polymerization shrinkage and elasticity of flowable composites and filled adhesives. Dent Mater. 1999; 15: 128-37.
39
40. Simi B, Suprabha BS. Evaluation of microleakage in posterior nanocomposite restoration with adhesive linner. J Consev Dent 2011; 14: 178-81.
40
ORIGINAL_ARTICLE
EXTENDED-STORAGE IRREVERSIBLE HYDROCOLLOID IMPRESSION MATERIALS
INTRODUCTION: There are many contingencies, so many dentists do not pour their own impressions immediately which clears the need for extended-storage alginate impression materials.OBJECTIVES: Evaluating and comparing three extended-storage alginate impression materials concerning their dimensional stability.MATERIALS AND METHODS: One hundred and eighty (180) specimens were prepared in accordance with ADA specification No. 18 using three extended-storage alginates; Hydrogum5 (Zhermack), Cavex ColorChange (Cavex) and Blueprint X Crème (Dentsply). Following to ADA specification No. 19 dimensional stability was evaluated directly at six intervals; 0, 24, 48, 72, 96 and 120 hours using 10 specimens/interval /material. Specimens for delayed evaluation, were stored moistened within sealed plastic bags in a dark room at 23 ±1ºc.RESULTS: All impression materials showed initial expansion and ended with a net shrinkage. Cavex ColorChange showed the least dimensional changes. Dimensional changes of Cavex ColorChange, Hydrogum5 and Blueprint Xcrème ranged (0.14 - 0.59, 0.37 - 2.07 and 0.35 - 1.40% respectively).CONCLUSION: While Cavex ColorChange can be stored up to 120 hours without clinically significant dimensional changes, Hydrogum5 and Blueprint Xcrème should be poured immediately for the best results.
https://adjalexu.journals.ekb.eg/article_59269_f63cca2e57726b593e4a47e5ab94761f.pdf
2016-08-01
146
149
10.21608/adjalexu.2016.59269
Alginate
Extended storage
Dimensional stability
Cavex ColorChange
Hydrogum5
Blueprint Xcrème
El-Danasory
Muhammed B.
1
Instructor at the removable prosthodontics department, faculty of Dentistry, Alexandria University, Alexandria, Egypt.
LEAD_AUTHOR
Gad
Muhammed A.
2
LEAD_AUTHOR
Hanafy
Seham A.
3
LEAD_AUTHOR
1. Carr AB, McGivney GP, Brown DT. McCracken's Removable partial prosthodontics, 12th ed, St. Louis: Mosby; 2010.
1
2. Nallamuthu NA, Braden M, Patel MP. Some aspects of the formulation of alginate dental impression materials-Setting characteristics and mechanical properties. J Dental Materials. 2012;28:756–62.
2
3. Dahl LB, Dymbe B, Valderhaug J. Bonding properties and dimensional stability of hydrocolloid impression systems in fixed prosthodontics. J Prosthet Dent. 1985;53:796‑800.
3
4. Sedda M, Casarotto A, Rausita A, Borracchini A. Effect of storage time on the accuracy of casts made from different irreversible hydrocolloids. J Contemporary Dental Practice. 2008;9:59-66.
4
5. Walker MP, Burckhard J, Mitts DA, Williams KB. Dimensional change over time of extended-storage alginate impression materials. Angle Orthod. 2010;80:1110-15.
5
6. Rodrigues SB, Augusto CR, Leitune VCB, Samuel SMW, Collares FM. Influence of delayed pouring on irreversible hydrocolloid properties. J Brazilian Oral Research (São Paulo). 2012;26:404-9.
6
7. Imbery TA, Nehring J, Janus C, Moon PC. Accuracy and dimensional stability of extended-pour and conventional alginate impression materials. J Am Dent Assoc. 2010;141:32-9.
7
8. Mosharraf R, Nosouhian S, Salehi M. Effect of storage time on dimensional stability of Extended-pour irreversible hydrocolloid impression material. J Isfahan Dental School. 2011;7:246-55.
8
9. Rohanian A, Shabestari GO, Zeighami S, Samadi MJ, Shamshiri AR. Effect of Storage Time of ExtendedPour and Conventional Alginate Impressions on Dimensional Accuracy of Casts. J Dentistry (Tehran). 2014;11:655-64.
9
10.Revised American National Standards Institute/American Dental Association, ANSI/ADA, Specification No. 18 for dental alginate impression materials, Chicago Ill: ADA; 1992.
10
11. American National Standard Institute/American Dental Association, ANSI/ADA, Specification No. 19 for Dental Elastomeric Impression Materials, Chicago Ill: ADA; 2004.
11
12. Fernandes A, Dua N, Herekar M. Corrective Primary Impression Technique. Open Dental Journal. 2010;4:27-8.
12
13. Kitamura A, Kawai Y. Basic investigation of the laminated alginate impression technique: Setting time, permanent deformation, elastic deformation, consistency, and tensile bond strength tests. J Prosthodontic Research. 2015;59:49-54.
13
14. Eriksson A, Ockert-Eriksson G, Lockowandt P. Accuracy of irreversible hydrocolloids (alginates) for fixed prosthodontics. A comparison between irreversible hydrocolloid, reversible hydrocolloid, and addition silicone for use in the syringe-tray technique. Eur J Oral Sci. 1998;106:651-60.
14
15.Bayramoğlu E, Özkan YK, Yildiz C. Comparison of marginal and internal fit of presson-metal and conventional ceramic systems for three- and four-unit implant-supported partial fixed dental prostheses: An in vitro study. J Prosthet Dent. 2015;114:52-8.
15
16. Fellows CM, Thomas GA. Determination of bound and unbound water in dental alginate irreversible hydrocolloid by nuclear magnetic resonance spectroscopy. J Dental Materials. 2009;25:486-93.
16
ORIGINAL_ARTICLE
EVALUATION OF COLOUR CHANGE DUE TO STAINING OF BLEACHED ENAMEL TREATED WITH DIFFERENT REMINERALIZING AGENTS
INTRODUCTION: Bleached teeth are more susceptible to stain absorption due to increased surface roughness.OBJECTIVES: The objective of this study was to evaluate the tea stain absorption on freshly bleached enamel surface after being subjected to various remineralizing agents.MATERIALS AND METHODS: Forty extracted human permanent maxillary central incisors were subjected to bleaching with 15% carbamide peroxide for 3 weeks. The teeth were then divided into four groups of 10 teeth each, according to the remineralizing agent used: [Group I: control group, which was not subjected to any remineralizing agent, Group II: acidulated phosphate fluoride (APF), Group III: casein phosphopeptide amorphous calcim phosphate (CPP-ACP) and Group IV: nano carbonate apatite (n-CAP)]. Remineralization was performed for 5 minutes daily for 1 week followed by immersion in tea solution for 10 minutes for 3 consecutive days. Spectrophotometer was used for color analysis at different periods. Data were collected and statistically analyzed using ANOVA and paired t-test (p < 0.05).RESULTS: After bleaching, the n-CAP group showed the least total color change (ΔE) with a mean of (5.13 ± 1.40) and (7.85 ± 2.21) after the the 1st and 3rd staining cycles, respectively, which was significantly lower than that of the other groups.CONCLUSION: The reduction of tea stains absorption after bleaching varies according to the type of the remineralizing agents used.
https://adjalexu.journals.ekb.eg/article_59270_4f20d292c27354bd9f840fb64100f763.pdf
2016-08-01
150
155
10.21608/adjalexu.2016.59270
bleaching
fluoride, casein phosphopeptide - amorphous calcium phosphate, nano- carbonate apatite, stain absorption, spectrophotometer
Elsaid
Yasmin E
1
Assisstant lecturer of conservative dentistry, Faculty of Dentistry, Damanhour university, Albehera, Egypt.
LEAD_AUTHOR
Ashour
Ahmed Y
2
LEAD_AUTHOR
Abd El-fattah
Wegdan M
3
LEAD_AUTHOR
1. Meireles SS, Fontes ST, Coimbra LA, Bona AD, Demarco FF. Effectiveness of different carbamide peroxide concentrations used for tooth bleaching: an in vitro study. J Appl Oral Sci. 2012; 20: 186-91.
1
2. Joiner A. The bleaching of teeth: a review of the literature. J Dent. 2006; 34: 412-9.
2
3. American dental asociation. accepted over-the-counter products [online]: available at: www.ada.org/ada/seal/shoppinglist.aspx.
3
4. Almas K, Al-Harbi M, Al-Gunaim M. The effect of a 10% carbamide peroxide home bleaching system on the gingival health. J Contemp Dent Pract. 2003; 4: 32-41.
4
5. Minoux M, Serfaty R. Vital tooth bleaching: biologic adverse effects-a review. Quintessence Int. 2008; 39: 645-59.
5
6. Jiang T, Ma X, Wang Y, Tong H, Shen X, Hu Y, et al. Investigation of the effects of 30% hydrogen peroxide on human tooth enamel by Raman scattering and laserinduced fluorescence. J Biomed Opt. 2008; 13: 014019.
6
7. Singh RD, Ram SM, Shetty O, Chand P, Yadav R. Efficacy of casein phosphopeptide-amorphous calcium phosphate to prevent stain absorption on freshly bleached enamel: An in vitro study. J Conserv Dent. 2010; 13: 76-9.
7
8. Dahl JE, Pallesen U. Tooth bleaching--a critical review of the biological aspects. Crit Rev Oral Biol Med. 2003; 14: 292-304.
8
9. Kim YS, Kwon HK, Kim BI. Effect of nano-carbonate apatite to prevent re-stain after dental bleaching in vitro. J Dent. 2011; 39: 636-42.
9
10.Borges AL, Costa AK, Saavedra GS, Komori PC, Borges AB, Rode SM. Color stability of composites: effect of immersion media. Acta Odontol Latinoam. 2011; 24: 193-9.
10
11. Kirkpatrick LA, Feeney BC. A simple guide to IBM SPSS statistics for version 20.0. Student ed. Belmont, Calif: Wadsworth, Cengage Learning; 2013: 115.
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12. Leslie E, Geoffrey J, James M. Interpretation and uses of medical statistics 4th ed: Oxford Scientific Publications; 1991: 411-6.
12
13. McGuckin RS, Babin JF, Meyer BJ. Alterations in human enamel surface morphology following vital bleaching. J Prosthet Dent. 1992; 68: 754-60.
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14. Dudea D, Florea A, Mihu C, Campeanu R, Nicola C, Benga G. The use of scanning electron microscopy in evaluating the effect of a bleaching agent on the enamel surface. Rom J Morphol Embryol. 2009; 50: 435-40.
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15.Rodrigues JA, Marchi GM, Ambrosano GM, Heymann HO, Pimenta LA. Microhardness evaluation of in situ vital bleaching on human dental enamel using a novel study design. Dent Mater. 2005; 21: 1059-67.
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16. Dietschi D, Rossier S, Krejci I. In vitro colorimetric evaluation of the efficacy of various bleaching methods and products. Quintessence Int. 2006; 37: 515-26.
16
17. Lee SY, Kwon HK, Kim BI. Effect of dentinal tubule occlusion by dentifrice containing nano-carbonate apatite. J Oral Rehabil. 2008; 35: 847-53.
17
18.Roveri N, Battistella E, Foltran I, Foresti E, Iafisco M, Lelli M, et al. Synthetic biomimetic carbonatehydroxyapatite nanocrystals for enamel remineralization. Advanced Materials Research. 2008; 47–50: 821–4.
18
19.Bar-Hillel R, Feuerstein O, Tickotsky N, Shapira J, Moskovitz M. Effects of amorphous calcium phosphate stabilized by casein phosphopeptides on enamel de- and remineralization in primary teeth: an in vitro study. J Dent Child (Chic). 2012; 79: 9-14.
19
20.Roveri N, Battistella E, Bianchi CL, Foltran I, Foresti E, Iafisco M, et al. Surface enamel remineralization: biomimetic apatite nanocrystals and fluoride ions different effects. Journal of Nanomaterials. 2009: 1-9.
20
21. Martin JM, de Almeida JB, Rosa EA, Soares P, Torno V, Rached RN, et al. Effect of fluoride therapies on the surface roughness of human enamel exposed to bleaching agents. Quintessence Int. 2010; 41: 71-8.
21
22.Bizhang M, Seemann R, Duve G, Romhild G, Altenburger JM, Jahn KR, et al. Demineralization effects of 2 bleaching procedures on enamel surfaces with and without post-treatment fluoride application. Oper Dent. 2006; 31: 705-9.
22
23. Hegde MN, Shetty S, Pardal D. Remineralization of enamel sub-surface lesion using casein phosphopeptide amorphous calcium phosphate (CPP-ACP) - a quantitative energy dispersive X-ray analysis (EDAX). J Conserv Dent. 2007; 10: 19-25.
23
24.Jayarajan J, Janardhanam P, Jayakumar P. Efficacy of CPP-ACP and CPP-ACPF on enamel remineralization - an in vitro study using scanning electron microscope and DIAGNOdent. Indian J Dent Res. 2011; 22: 77-82.
24
25. Oshiro M, Yamaguchi K, Takamizawa T, Inage H, Watanabe T, Irokawa A, et al. Effect of CPP-ACP paste on tooth mineralization: an FE-SEM study. J Oral Sci. 2007; 49: 115-20.
25
26. Pradeep K, Rao PK. Remineralizing agents in the noninvasive treatment of early carious lesions. Int J Dent Case Reports. 2011; 1: 73-84.
26
27. Wang X, Mihailova B, Klocke A, Heidrich S, Bismayer U. Effect of Artificial Saliva on the Apatite Structure of Eroded Enamel. International Journal of Spectroscopy. 2011; 2011.
27
28. Giulio AB, Matteo Z, Serena IP, Silvia M, Luigi C. In vitro evaluation of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) effect on stripped enamel surfaces. A SEM investigation. J Dent. 2009; 37: 228-32.
28
29. Li L, Pan HH, Tao H, Xu X, Mao C, Gu X, et al. Repair of enamel by using hydroxyapatite nanoparticles as the building blocks. Journal of Materials Chemistry. 2008; 18: 4079–84.
29
30. Mathias J, Kavitha S, Mahalaxmi S. A comparison of surface roughness after micro abrasion of enamel with and without using CPP-ACP: An in vitro study. J Conserv Dent. 2009; 12: 22-5.
30
ORIGINAL_ARTICLE
IN VITRO COMPARATIVE STUDY OF LAVA ULTIMATE CAD/CAM RESTORATIVE SYSTEM IN COMPARISON TO IPS E-MAX PRESS
INTRODUCTION: The increasing demand for esthetics stimulated research in metal-free, tooth-colored restorations.OBJECTIVES: The study compares the biaxial flexural strength, surface roughness and color stability of CAD/CAM nano ceramic optimized composite resin Lava Ultimate material (3M ESPE), pressable ceramic IPS e-max (ivoclar vivadent) and feldspathic porcelain VM7(VITA)MATERIALS AND METHODS: Ninety specimens were used, divided into three groups 30 specimens each: first group of Lava Ultimate discs, second group of E-max Press discs and third group of VM7 discs: each group was divided into three subgroups ten specimens each: 10 specimens were subjected to biaxial flexural strength test using universal testing machine, 10 to surface roughness test using profilometer and 10 for color stability test using spectrophotometer.RESULTS: On comparing the biaxial flexural strength test there was no significant difference between Lava ultimate group and E-max press, while there was a significant increase in strength in Lava ultimate and E-max press group than the VM7.As for the surface roughness test there was no significant difference between Lava ultimate and E-max press, while there was a significant increase in roughness in VM7 group than Lava ultimate and E-max press groups.The Color difference in the three groups showed a significant increase in ΔE in Lava ultimate than E-max press. Also, there was a significant decrease in ΔE in VM7 group than Lava ultimate and E-max press groups.CONCLUSIONS: The E-max press and the Lava Ultimate showed significantly higher biaxial flexural strength values and significantly lower surface roughness compared to VM7. Lava Ultimate has the least color stability due to its composite matrix although it could be repolished. VM7 is the most color stable so it could be used as veneers although it is the weakest ceramic in the study.
https://adjalexu.journals.ekb.eg/article_59271_cce4c203c07f2872750c8b02193defb6.pdf
2016-08-01
156
162
10.21608/adjalexu.2016.59271
Biaxial Flexural Strength
Surface roughness
color stability
Dogheim
Ali Y.
1
Resident at Conservative Dentistry Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
LEAD_AUTHOR
El Kady
Ahmed S.
2
LEAD_AUTHOR
Ghoneim
Mona M.
3
LEAD_AUTHOR
Abdelmotie
Maha A.
4
LEAD_AUTHOR
1. Christensen GJ. In-office CAD/CAM milling of restorations. The future? J Amer Dent Assoc. 2008; 139: 83- 5.
1
2. Giordano R. Materials for chairside CAD/CAM-produced restorations. J Am Dent Assoc. 2006; 137(Suppl): 14S-21S.
2
3. Lava ultimate restorative brochure – CEREC-3M. Available at: http://multimedia.3m.com/mws/media/756167O/lavaultimate-cad-cam-restorativecerec.pdf?fn=lava_ultimate_brochure_cerec-for.
3
4. Magne P, Kenezevic A. Simulated fracture resistance of composite resin versus porcelain CAD/CAM overlay restoration on endodontically treated molar. Quintessence Int. 2009; 40: 125-33.
4
5. Belli R, Geinzer E, Muschweck A, Petschelt A, Lohbauer U. Mechanical fatigue degradation of ceramics versus resin composites for dental restorations. Dent Mater. 2014; 30: 424-32.
5
6. Scientific Documentation IPS e.max® Press. Ivoclar Vivadent. p 6.
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7. Queiroz JR, Benetti P, Ozcan M, de Oliveira LF, Della Bona A, Takahashi FE, et al. Surface characterization of feldspathic ceramic using ATR FT-IR and ellipsometry after various silanization protocols. Dent Mater. 2012; 28: 189-96.
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8. Alghazzawi TF, Janowski GM. Correlation of flexural strength of coupons versus strength of crowns fabricated with different zirconia materials with and without aging. J Am Dent Assoc. 2015; 146: 904-12.e1.
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9. Mohsen C. Corrosion effect on the flexural strength & micro-hardness of ips e-max ceramics. OJST. 2011; 1: 29- 35.
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10. Puri S. Techniques used to fabricate all-ceramic restorations in the dental practice. Compend Contin Educ Dent. 2005; 26: 519-25; quiz 526-7.
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11.Cattel MJ, Knowles JC, Clarke RL, Lynch E. The bi-axial flexural strength of two pressable ceramic systems. J Dent. 1999; 27: 183-96.
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13. 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; 30: e419-24.
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14. Arocha MA, Mayoral JR, Lefever D, Mercade M, Basilio J, Roig M. Color stability of siloranes versus methacrylateased composites after immersion in staining solutions. Clin Oral Investig. 2013; 17: 1481-7.
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15. Chu SJ, Trushkowsky RD, Paravina RD. Dental color matching instruments and systems. Review of clinical and research aspects. J Dent. 2010; 38(Suppl 2): e2-16.
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16. Kim-Pusateri S, Brewer JD, Davis EL, Wee AG. Reliability and accuracy of four dental shade-matching devices. J Prosthet Dent. 2009; 101: 193-9.
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17. Filho HL, Maia LH, Araújo MV, Eliast CN, Ruellas AC. Colour stability of aesthetic brackets: ceramic and plastic. Aust Orthod J. 2013; 29: 13- 20.
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19. Sadighpour L, Geramipanah F, Raeesi B. In vitro mechanical tests for modern dental ceramics. J Dent (Tehran). 2006; 3: 143-52.
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21. Buso L, Oliveira-Júnior OB, Hiroshi Fujiy F, Leão Lombardo GH, Ramalho Sarmento H, Campos F, et al. Biaxial flexural strength of CAD/CAM ceramics. Minerva Stomatol. 2011; 60: 311-9.
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22. Kassem AS, Atta O, El-Mowafy O. Combined effects of thermocycling and load-cycling on microleakage of computer-aided design/computer-assisted manufacture molar crowns. Int J Prosthodont. 2011; 24: 376-8.
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23. Albero A, Pascual A, Camps I, Grau-Benitez M. Comparative characterization of a novel cad-cam polymerinfiltrated-ceramic-network. J Clin Exp Dent. 2015; 7: e495-500.
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24. Fasbinder DJ. Nano-Ceramic Restorative Block. A new material is available for chairside CAD/CAM restorations. Inside Dentistry. 2012; 8. Available at: https://www.dentalaegis.com/id/2012/02/nano-ceramicrestorative-block
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25. Stachowiak GW, Batchelor AW, Stachowiak GB. Experimental methods in tribology. 44th ed. Amsterdam, Oxford: Elsevier, 2004.
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26. Wennerberg A, Ohlsson R, Rosen BG, Andersson B. Characterizing three-dimensional topography of engineering and biomaterial surfaces by confocal laser scanning and stylus techniques. Med Eng Phys. 1996;18:548–56.
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27. Beuer F, Schweiger J, Eichberger M, Kappert HF, Gernet W, Edelhoff D. High‑strength CAD/CAM‑fabricated veneering material sintered to zirconia copings – A new fabrication mode for all‑ceramic restorations. Dent Mater. 2009; 25: 121-8.
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29. Isgró G, Addison O, Fleming GJ. Transient and residual stresses in a pressable glass‑ceramic before and after resin ‑cement coating determined using profilometry. J Dent. 2011; 39: 368-75.
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30. Stawarczyk B, Ozcan M, Roos M, Trottmann A, Sailer I, Hämmerle CH. Load‑bearing capacity and failure types of anterior zirconia crowns veneered with overpressing and layering techniques. Dent Mater. 2011; 27: 1045-53.
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31. Bagheri R, Burrow MF, Tyas M. influence of food stimulating solutions and surface finish on susceptibility to staining of aesthetic restorative materials. J Dent. 2005; 33: 389-98.
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32. Khokhar ZA, Razzoog ME, Yaman P. Colour stability of restorative resins. Quintessence Int. 1991; 22: 733-7.
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33. Seghi RR, Hewlett ER, Kim J. Visual and instrumental colorimetric assessments of small color differences on translucent dental porcelain. J Dent Res. 1989; 68: 1760-4.
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34. Yannikakis SA, Zissis AJ, Polyzois GL, Caroni C. Colour stability of provisional resin restorative materials. J Prosthet Dent. 1998; 80: 533-9.
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35. Um CM, Ruyter IE. Staining of resin-based veneering materials with coffee and tea. Quintessence Int. 1991; 22: 377-86.
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36. Yannikakis SA, Zissis AJ, Polyzois GL, Caroni C. Colour stability of provisional resin restorative materials. J Prosthet Dent. 1998; 80:533-9.
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37. Ghahramanloo A, Madani AS, Sohrabi K, Sabzevari S. An evaluation of color stability of reinforced composite resin compared with dental porcelain in commonly consumed beverages. J Can Dent Assoc. 2008;136:673-80.
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38.Johnston WM, Kao EC. Assessment of appearance match by visual observation and clinical colorimetry. J Dent Res.1989; 68: 819-22.
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39. Koksal T, Dikbas I. Color stability of different denture teeth materials against various staining agents. Dent Mater J. 2008; 27: 139-44.
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40. Sulieman M. An overview of tooth discoloration; extrinsic, intrinsic and internalized stains. Dent Update. 2005; 32: 463-4, 466-8,471.
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ORIGINAL_ARTICLE
EFFECT OF ANTIOXIDANT TREATMENT AND DELAYED BONDING ON SHEAR BOND STRENGTH OF PORCELAIN LAMINATE VENEERS BONDED TO BLEACHED ENAMEL (IN VITRO STUDY)
INTRODUCTION: Porcelain laminate veneers are sometimes necessary after bleaching in patients requiring marked change in tooth color. Bonding following bleaching has been shown to be compromised. The use of an antioxidant agent and delayed bonding could improve bonding.OBECTIVES: was to evaluate the effect of antioxidant treatment and delayed bonding, one week after bleaching, on the shear bond strength of porcelain laminate veneers bonded to bleached enamel in comparison with immediate bonding after bleaching.MATERIALS AND METHODS: Forty freshly extracted maxillary central incisors with flat enamel surfaces were prepared and divided into four groups (n=10/group). Three test groups were bleached with 40% hydrogen peroxide (Power Whitening) and one control group was left as unbleached enamel. Forty glass ceramic discs were fabricated using IPS e.max Press to be bonded to the enamel surface. Group A:antioxidant treated specimens. Bleached specimens were treated with an antioxidant agent, 10% sodium ascorbate, for 10 minutes then glass ceramic discs were bonded to the specimens. Group B:delayed bonded specimens. Bleached specimens were stored in artificial saliva for 7 days then glass ceramic discs were bonded to the specimens. Group C: immediate bonded specimens. Glass ceramic discs were immediately bonded to bleached specimens. Group D:control group. Glass ceramic discs were bonded to unbleached specimens. Dual cured resin cement (RelyX U200) was used for bonding. Following bonding, the specimens were thermocycled for 600 cycles corresponding to one clinical year service then tested for shear bond strength using a universal testing machine at a crosshead speed of 0.5 mm/min. Bond failure analysis was evaluated for the specimens using a stereomicroscope and random samples were chosen to be tested under a scanning electron microscope.RESULTS: No significant difference was found between the control, delayed bonding and antioxidant treated group (p < 0.001). Immediately bonded group showed significantly lower mean bond strength with glass ceramic discs than all groups (p < 0.001).CONCLUSIONS: It is recommended to delay bonding for one week after bleaching or use 10% sodium ascorbate to reverse bleaching.
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2016-08-01
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antioxidant
delayed bonding
Shear bond strength
bleaching
S
Beltagui
1
Dentist, Faculty of Dentistry, Alexandria University, Egypt.
LEAD_AUTHOR
S
Bakry
2
LEAD_AUTHOR
M
Mohy El Din
3
LEAD_AUTHOR
1. Griffiths CE, Bailey JR, Jarad FD, Youngson CC. An investigation into most effective method of treating stained teeth: An in vitro study. J Dent. 2008; 36: 54– 62.
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2. Plotino G, Buono L, Grande NM, Pameijer CH, Somma F. Nonvital tooth bleaching: a review of the literature and clinical procedures. J Endod. 2008; 34: 394–407.
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3. Sulieman M. An overview of tooth discoloration: extrinsic, intrinsic and internalized stains. Dent Update. 2005; 32: 463–71.
3
4. Sulieman M, Addy M, Rees J. Development and evaluation of a method in vitro to study the effectiveness of tooth bleaching. J Dent. 2003; 31: 415–22.
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5. Attin T, Hannig C, Wiegand A, Attin R. Effect of bleaching on restorative materials and restorations - A systematic review. Dent Mater. 2004; 20: 852–61.
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6. Ma X, Li R, Sa Y, Liang S, Sun L, Jiang T, et al. Separate contribution of enamel and dentine to overall tooth colour change in tooth bleaching. J Dent. 2011; 39: 739–45.
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7. Jarad FD, Griffiths CE, Jaffri M, Adeyemi AA, Youngson CC. The effect of bleaching, varying the shade or thickness of composite veneers on final colour: An in vitro study. J Dent. 2008; 36: 554–9.
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8. Sung EC, Chan SM, Mito R, Caputo AA. Effect of carbamide peroxide bleaching on the shear bond strength of composite to dental bonding agent enhanced enamel. J Prosthet Dent. 1999; 82: 595–9.
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9. Tashkandi E. Effect of surface treatment on the microshear bond strength to zirconia. Saudi Dent J. King Saud University; 2009; 21: 113–6.
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10. Krejci I, Lutz F, Reimer M. Marginal adaptation and fit of adhesive ceramic inlays. J Dent. 1993; 21: 39–46.
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11. Gökçe B, Çömlekoǧlu ME, Özpinar B, Türkün M, Kaya AD. Effect of antioxidant treatment on bond strength of a luting resin to bleached enamel. J Dent. 2008; 36: 780– 5.
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12.Rüttermann S, Braun A, Janda R. Shear Bond Strength and Fracture Analysis of Human vs. Bovine Teeth. PLoS One. 2013; 8.
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13. Silva JMG da, Botta AC, Barcellos DC, Pagani C, Torres CRG. Effect of antioxidant agents on bond strength of composite to bleached enamel with 38% hydrogen peroxide. Mater Res. Materials Research; 2011; 14: 235–8.
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14. Danesh-Sani S, Esmaili M. Effect of 10% sodium ascorbate hydrogel and delayed bonding on shear bond strength of composite resin and resin-modified glass ionomer to bleached enamel. J Conserv Dent. 2011; 14: 241.
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15. García-Godoy F, Dodge WW, Donohue M, O’Quinn JA. Composite resin bond strength after enamel bleaching. Oper Dent. 18: 144–7.
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16. Kaya AD, Türkün M, Arici M. Reversal of compromised bonding in bleached enamel using antioxidant gel. Oper Dent. 33: 441–7.
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17. Titley KC, Torneck CD, Smith DC CR, Microscopy AA. Scanning electron microscopy observations on the penetration and structure on the resin tags in bleached and unbleached bovine enamel. J Endodont. 1991; 17: 72–5.
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18. Türkün M, Kaya AD. Effect of 10% sodium ascorbate on the shear bond strength of composite resin to bleached bovine enamel. J Oral Rehabil. 2004; 31: 1184–91.
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19. Türkün M, Celik EU, Kaya AD, Arici M. Can the hydrogel form of sodium ascorbate be used to reverse compromised bond strength after bleaching? J Adhes Dent. 2009; 11: 35–40.
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20. Kimyai S, Valizadeh H. The effect of hydrogel and solution of sodium ascorbate on bond strength in bleached enamel. Oper Dent. Operative Dentistry, Inc; 2006; 31: 496–9.
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21. Unlu N, Cobankara FK, Ozer F. Effect of elapsed time following bleaching on the shear bond strength of composite resin to enamel. J Biomed Mater Res B Appl Biomater. 2008; 84: 363–8.
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22.Borges AB, Rodrigues JR M AL. The influence of bleaching agents on enamel bond strength of a composite resin according to the storage time. Rev Odontol. 2007; 36: 77–83.
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23. Lai SCN, Tay FR, Cheung GSP, Mak YF, Carvalho RM, Wei SHY, et al. Reversal of compromised bonding in bleached enamel. J Dent Res. 2002; 81: 477–81.
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24. Hegedüs C, Bistey T, Flóra-Nagy E, Keszthelyi G, Jenei A. An atomic force microscopy study on the effect of bleaching agents on enamel surface. J Dent. 1999; 27: 509–15.
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25. Zhao H, Li X, Wang J, Qu S, Weng J, Zhang X. Characterization of peroxide ions in hydroxyapatite lattice. J Biomed Mater Res. 2000; 52: 157–63.
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26. Torres CRG, Borges AFK& AB. The effects of antioxidant agents as neutralizers of bleaching agents on enamel bond strength. Brazilian J Oral Sci. Piracicaba Dental School - UNICAMP; 5: 971–6.
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27.Braga RR, Meira JBC, Boaro LCC, Xavier TA. Adhesion to tooth structure: A critical review of “macro” test methods. Dent Mater. 2010; 26: 38–49.
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28. Lin J, Shinya A, Gomi H, Shinya A. Effect of selfadhesive resin cement and tribochemical treatment on bond strength to zirconia. Int J Oral Sci. 2010; 2: 28–34.
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29. Viotti RG, Kasaz A, Pena CE, Alexandre RS, Arrais CA, Reis AF. Microtensile bond strength of new selfadhesive luting agents and conventional multistep systems. J Prosthet Dent. 2009; 102: 306–12.
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ORIGINAL_ARTICLE
ANTIBACTERIAL EFFECT OF TWO TYPES OF NANO PARTICLES INCORPORATED IN ZINC OXIDE BASED SEALERS ON ENTEROCOCCUS FAECALIS (IN VITRO STUDY)
INTRODUCTION: Antibacterial properties of nanoparticles have recently come into the spotlight in endodontic therapy.OBJECTIVES: Evaluation of the antimicrobial efficacy of zinc oxide based sealer incorporated with silver and zinc oxide nanoparticles compared with simple zinc oxide sealer against Enterococcus faecalis.MATERIALS AND METHODS: The study was conducted on 60 human extracted mandibular premolars. After instrumentation of all teeth and inoculation of root canals with Enterococcus faecalis, teeth were divided into three groups according to the type of the tested sealer, Group I: control group where teeth were obturated with unmodified zinc oxide based sealer. Group II: teeth were obturated using sealer modified with silver nanoparticles, Group III: teeth were obturated using sealer modified with zinc oxide nanoparticles. Each group was subdivided into two subgroups according to the timing of filling removal and culture sample. Subgroup A: filling removal and culture sample were taken after one week. Subgroup B: filling removal and culture sample were taken after three weeks. Colony counting technique was used , the number of colony forming unites method was counted to assess the effect against Enterococcus faecalis. Data were recorded, tabulated and statistically analyzed using Friedman test to compare the differences between the three groups.RESULTS: After three weeks from obturation, silver nanoparticles had a superior antibacterial effect and there was a significant difference between the three tested groups, but after one week of obturation there was no significant difference between the three tested groups.CONCLUSION: In three weeks samples after obturation silver nanoparticles had a superior antibacterial effect and there was a significant difference between the three tested groups, but after one week of obturation there was no significant difference between the three tested groups.
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2016-08-01
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10.21608/adjalexu.2016.59273
Enterococcus faecalis
silver nanoparticles
Zinc Oxide Nanoparticles
zinc oxide eugenol sealer
Mohammed
Hala F.
1
Master student of Endodontic Dentistry, Department of Conservative Dentistry, Faculty of Dentistry, Alexandria University, Egypt.
LEAD_AUTHOR
Ibrahim
Mohammed M.
2
LEAD_AUTHOR
Abd El-Fattah
Abd El-Fattah H.
3
LEAD_AUTHOR
Shalaby
Thanaa I.
4
LEAD_AUTHOR
1. Leavis HL, Willems RJL, Top J, Spalburg E, Mascini EM, Fluit AC, et al. Epidemic and nonepidemic multidrug-resistant Enterococcus faecium. Emerg Infect Dis 2003; 9: 1108-15.
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2. Gomes BP, Pedroso JA, Jacinto RC, Vianna ME, Ferraz CC, Zaia AA, et al. In vitro evaluation of the antimicrobial activity of five root canal sealers. Braz Dent J 2004; 15: 30-5.
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3. Queiroz AM, Nelson-Filho P, Silva LA, Assed S, Silva RA, Ito IY. Antibacterial activity of root canal filling materials for primary teeth: zinc oxide and eugenol cement, Calen paste thickened with zinc oxide, Sealapex and EndoREZ. Braz Dent J 2009; 20: 290-6.
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4. Ibraheem AF, Salman HA. An in vitro evaluation of the antimicrobial activity of three root canal sealers. J Bagh College Dentistry 2009; 21: 28-31.
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5. Shakouie S, Eskandarinezhad M, Shahi S, Mokhtari H, FroughReihani M, Soroush M, et al. Antimicrobial efficacy of AH-Plus, adseal and endofill against Enterococcus faecalis-An in vitro study. Afr J Microbiol Res 2012; 6: 991-4.
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6. Anumula L, Kumar S, Kumar VS, Sekhar C, Krishna M, Pathapati RM, et al. An Assessment of Antibacterial Activity of Four Endodontic Sealers on Enterococcus faecalis by a Direct Contact Test: An In Vitro Study. ISRN Dent 2012; 2012: 989781.
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7. Kaiwar A, Nadig G, Hegde J, Lekha S. Assessment of Antimicrobial Activity of Endodontic Sealers on Enterococcus faecalis: An in vitro Study. World J Dent 2012; 3: 26-31.
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8. Habeeb MA. Analysis of antimicrobial activity of root canal sealers against endodontic pathogens using agar diffusion test. J Bagh College Dentistry 2014; 26: 27-34.
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9. Kaplan AE, Picca M, Gonzalez MI, Macchi RL, Molgatini SL. Antimicrobial effect of six endodontic sealers: an in vitro evaluation. Dental Traumatology 1999; 15: 42-5.
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10. Ehsani M, Adibi A, Moosavi E, Dehghani A, Khafri S, Adibi E. Antimicrobial activity of three different endodontic sealers on the enterococcus faecalis and lactobacillus (in vitro). Caspian J Dent Res 2013; 2: 8- 14.
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11. Orstavik D. Antibacterial properties of endodontic materials. Int Endod J 1988; 21: 161-9.
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12. Weiss EI, Shalhav M, Fuss Z. Assessment of antibacterial activity of endodontic sealers by a direct contact test. Endod Dent Traumatol 1996; 12: 179-84.
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13. Sofi W, Gowri M, Shruthilaya M, Rayala S, Venkatraman G. Silver nanoparticles as an antibacterial agent for endodontic infections. Bio Med Central Ltd 2012; 12: 60-6.
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14. Chandrakanth RK, Ashajyothi C, Oli AK, Prabhurajeshwar C. Potential bactericidal effect of silver nanoparticles synthesised from enterococcus species. Orient J Chem 2014; 30: 1253-62.
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15. Wu D, Fan W, Kishen A, Gutmann JL, Fan B. Evaluation of the Antibacterial Efficacy of Silver Nanoparticles against Enterococcus faecalis Biofilm. J Endod 2014; 40: 285-90.
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16. Daming Wu, Fan W, Kishen A, Gutmann JL, Fan B. Evaluation of the antibacterial efficacy of silver nanoparticles against Enterococcus faecalis Biofilm. J Endod 2014; 40: 285-90.
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17. Krishnan R, Arumugam V, Vasaviah SK. The MIC and MBC of Silver Nanoparticles against Enterococcus faecalis - A Facultative Anaerobe. J Nanomed Nanotechnol 2015; 6: 285.
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18. Jonaidi-Jafari N, Izadi M, Javidi P. The effects of silver nanoparticles on antimicrobial activity of ProRoot mineral trioxide aggregate (MTA) and calcium enriched mixture (CEM). J Clin Exp Dent 2016; 8: e22-6.
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19. Rai M, Yadav A, Gade A. Silver nanoparticles as a new generation of antimicrobials. Biotechnol Adv 2009; 27: 76-83.
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20. Gomes-Filho JE, Silva FO, Watanabe S, Cintra LT, Tendoro KV, Dalto LG, et al. Tissue reaction to silver nanoparticles dispersion as an alternative irrigating solution. J Endod 2010; 36: 1698-702.
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21. Landsdown AB. Silver. I: Its antibacterial properties and mechanism of action. J Wound Care 2002; 11: 125- 30.
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22. Castellano JJ, Shafii SM, Ko F, Donate G, Wright TE, Mannari RJ, et al. Comparative evaluation of silvercontaining antimicrobial dressings and drugs. Int Wound J 2007; 4: 114-22.
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23. Feng QL, Wu J, Chen GQ, Cui FZ, Kim TN, Kim JO. A mechanistic study of the antibacterial effect of silver ions on Escherichia coli and Staphylococcus aureus. J Biomed Mater Res 2000; 52: 662-8.
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24. DaSilva Luis, Finer Yoav, Perez Davidi M, Weiss EI, Beyth. Biofilm formation within the interface of bovine root dentin treated with conjugated chitosan and sealer containing chitosan nanoparticles. J Endod 2013; 39: 249-53.
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25. Guerreiro-Tanomaru JM, Trindade-Junior A, Costa BC, da Silva GF, Drullis Cifali L, Basso Bernardi MI, et al. Effect of zirconium oxide and zinc oxide nanoparticles on physicochemical properties and antibiofilm activity of a calcium silicate-based material. ScientificWorldJournal. 2014; 2014: 975213.
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26. Barros J, Silva MG, Rodrigues MA, Alves FRF, Lopes MA, Pina-Vaz I, et al. Antibacterial, physicochemical and mechanical properties of endodontic sealers containing quaternary ammonium polyethylenimine nanoparticles. Int Endod J 2014; 47: 725-34.
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27. Kishen A, Shi Z, Shrestha A, Neoh KG. An investigation on the antibacterial and antibiofilm efficacy of cationic nanoparticulates for root canal disinfection. J Endod 2008; 34: 1515-20.
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28. Shrestha A, Zhilong S, Gee NK, Kishen A. Nanoparticulates for Antibiofilm Treatment and Effect of Aging on Its Antibacterial Activity. J Endod 2010; 36: 1030-5.
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29. Emami-Karvani Z, Chehrazi P. Antibacterial activity of ZnO nanoparticle on grampositive and gram-negative bacteria. Afr J Microbiol Res 2011; 5: 1368-73.
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30. Arabi F, Imandar M, Negahdary M, Imandar M, Noughabi MT, Akbari-dastjerdi H, et al. Investigation anti-bacterial effect of zinc oxide nanoparticles upon
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31. life of Listeria monocytogenes. Ann Biol Res 2012; 3: 3679-85.
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32. Darryl NW, Sheryl HE, Tracey RPH. Evaluation of the microbial growth response to inorganic nanoparticles. J Nanobiotechnol 2006; 4: 1477-80
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33. Huang Z, Zheng X, Yan D, Yin G, Liao X, Kang Y, et al. Toxicological effect of ZnO nanoparticles based on bacteria. Langmuir 2008; 24: 4140-4.
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34. Sierra J, Ruiz F, Pena D, Gutierrez FM. The Antimicrobial sensitivity of Streptococcus mutants to nanoparticles of silver, zinc oxide and Gold. Int J Nanoparticles 2008; 2: 402-15.
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35. Zhang G, Niu A, Peng S, Jiang M, Tu Y, Li M, et al. Formation of novel polymeric nanoparticles. Acc Chem Res 2001; 34: 249-56.
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36. Rad MS, Kompany A, Zak AK, Javidi M, Mortazavi SM. Microleakage and antibacterial properties of ZnO and ZnO:Ag nanopowders prepared via a sol–gel method for endodontic sealer application. J Nanopart Res 2013; 15: 1925.
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37. Doty C, Tshikhudo R, Brust M, Fernig D. Extremely stable water soluble Ag nanoparticles. Chem. Mater 2005; 17: 4630-5.
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ORIGINAL_ARTICLE
EFFECT OF FISH OIL ON ALVEOLAR BONE OF RATS WITH INDUCED RHEUMATOID ARTHRITIS
INTRODUCTION: Although rheumatoid arthritis (RA) is primarily a chronic inflammatory autoimmune disease which affects the synovial joints, it has profound effects on bone remodeling characterized by increase osteoclastic activity, and a negative balance of bone formation and resorption. A strong correlation has been reported between RA and periodontitis with subsequent alveolar bone resorption. As a potent anti-inflammatory mediator, fish oil rich in omega-3 polyunsaturated fatty acids (n-3 PUFA) has demonstrated beneficial actions in various inflammatory conditions including RA and cardiovascular disease. High intakes of n-3 PUFA provide symptomatic relief and reduce the doses of anti-inflammatory drugs needed to control the RA symptoms.OBJECTIVES: To evaluate the biological effect of fish oil on alveolar bone of rats with induced rheumatoid arthritis.MATERIALS AND METHODS: Twenty one male albino rats were used in this study. The rats were divided into 3 groups 7 rats each. Group I: control group, Group II: RA induced group and Group III: RA induced group + fish oil. Rheumatoid arthritis induction was done by single subcutaneous injection of Freund's complete adjuvant. Fish oil was orally gavaged daily till the end of the experiment. Laboratory investigations were performed twice, after RA induction and at the end of the experiment. Effect of fish oil on alveolar bone of rats was assessed histologically and ultrastructurely in the different groups.RESULTS: Remarkable improvement in the histology and the ultrastructure of the alveolar bone of rats in Group III was observed. Moreover, hematological values revealed significant decrease in the inflammatory condition of rats with induced RA after fish oil treatment.CONCLUSION: Rheumatoid arthritis is an important risk factor for alveolar bone loss. The treatment of the RA induced rats with fish oil not only prevented the alveolar bone resorption and stimulated new bone formation, but also reduced relatively the level of rheumatoid factor in the blood.
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2016-08-01
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10.21608/adjalexu.2016.59274
alveolar bone
fish oil
Induced rheumatoid arthritis
Freund's complete adjuvant
Elkazzaz
Nihal T.
1
Assistant lecturer of Oral Biology – Faculty of Dentistry – Alexandria University
LEAD_AUTHOR
AbdElSamad
Salwa Y.
2
LEAD_AUTHOR
Kawana
Khadiga Y.
3
LEAD_AUTHOR
Kora
Azza S.
4
LEAD_AUTHOR
1. Bevaart L, Vervoordeldonk MJ, Tak PP. Evaluation of Therapeutic Targets in Animal Models of Arthritis. How Does It Relate to Rheumatoid Arthritis? Arthritis Rheum. 2010; 62:2192-205.
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2. Grassi W, De Angelis R, Lamanna G, Cervini C. The clinical rheumatoid arthritis. Eur J Radiol. 1998; 27:18-24.
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3. Block SR. Guidelines for the management of rheumatoid arthritis. Arthritis Rheum. 2002; 46:328-46.
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4. Müller-Ladner U, Pap T, Gay RE, Neidhart M, Gay S. Mechanisms of disease: the molecular and cellular basis of joint destruction in rheumatoid arthritis. Nat Clin Pract Rheumatol. 2005; 1:102-10.
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5. Haynes DR, Crotti TN, Loric M, Bain GI, Atkins GJ, Findlay DM. Osteoprotegrin and receptor activator of nuclear factor kappa B ligand (RANKL) regulate osteoclast formation by cells in the human rheumatoid arthritis joint. Rheumatology. 2001:40; 623-30.
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6. Corrado A, Neve A, Maruotti N, Cantatore FP. Bone effects of biologic drugs in rheumatoid arthritis. Clin Dev Immunol. 2013; 2013:1-7.
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7. Fit N, Chirilă F, Răpuntean S, Nadăş G, Preoteasa L, Cumpănaşu F. Haematological and biochemical investigations in rats with rheumatoid arthritis induced by Freund Complete Adjuvant and treated with bee venom. Veterinary Medicine. 2011; 68; 151-8.
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20.Banji D, Pinnapureddy J, Otilia JF, Banji A, Kumar R. Evaluation of the concomitant use of methotrexate and curcumin on Freund's complete adjuvant-induced arthritis and hematological indices in rats. Narsi Reddy Indian J Pharmacol. 2011; 43: 546–50.
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24. Dunn CA, Jin Q, Taba M, Renny T. Franceschi, R. BMD gene delivery for alveolar bone engineering at dental implants defects. Molecular therapy. 2005; 11; 295-9.
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26. Fit N, Chirila F, Rapuntean S, Nadas G. Haematological and Biochemical Investigations in Rats with Rheumatoid Arthritis Induced by Freund Complete Adjuvant and Treated with Bee Venom. Veterinary Medicine. 2011; 68:151-8.
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33.Ruggiero C, Lattanzio F, Lauretani F, Gasperini B, AndresLacueva C, Cherubini A. Omega-3 polyunsaturated fatty acids and immune-mediated diseases: inflammatory bowel disease and rheumatoid arthritis. 2009; 15:4135-48.
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34. Alam SQ, Kokkinos PP, Alam BS. Fatty acid composition and arachidonic acid concentrations in alveolar bone of rats fed diets with different lipids. Calcif Tissue Int. 1993; 35- 52.
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35. Serhan CN, Gotlinger K, Hong S, Arita M. Resolvins, docosatrienes, and neuroprotectins, novel omega-3-derived mediators, and their aspirin-triggered endogenous epimers: an overview of their protective roles in catabasis. Prostaglandins Other Lipid Mediat. 2004; 73:155–72.
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36. Herrera BS, Ohira T, Gao L, Omori K, Yang R. An endogenous regulator of inflammation, resolvin E1, modulates osteoclast differentiation and bone resorption. Br J Pharmacol. 2008; 155:1214–23.
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37. Poulsen RC, Gotlinger KH, Serhan CN, Kruger MC. Identification of inflammatory and proresolving lipid mediators in bone marrow and their lipidomic profiles with ovariectomy and omega-3 intake. Am J Hematol. 2008; 83:437–45.
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38.James MJ, Gibson RA, Cleland LG. Dietary polyunsaturated fatty acids and inflammatory mediator production. Am J Clin Nutr. 2000; 71:343–8.
38
39. Poulsen RC, Moughan PJ, Kruger MC. Longchainpolyunsaturated fatty acids and the regulation of bone metabolism. Exp Biol Med. 2007; 232:1275–88.
39
ORIGINAL_ARTICLE
CONE BEAM COMPUTED TOMOGRAPHY EVALUATION OF TWO OBTURATION TECHNIQUES AFTER PREPARATION WITH TWO NOVEL ROTARY SYSTEMS (IN VITRO STUDY)
INTRODUCTION: Three dimensional obturation is an essential factor for the success of root canal treatment which is achieved by the adaptation of the root filling to the canal walls to create a homogenous mass of filling.OBJECTIVES: To compare the obturation quality of different obturation techniques in curved canals using two rotary systems by CBCT.MATERIALS AND METHODS: Forty mesial roots of mandibular first molars were selected, decoronated to 12mm length and divided into two groups (n=20). Group I: instrumented with Protaper Next file system; Group II: instrumented with Wave One primary file, then they were subdivided into subgroups (A1, A2 and B1 ,B2) according to the obturation technique used . Subgroups (A1, A2) were obturated with single cone technique while subgroups (B1 , B2) were obturated using cold lateral compaction technique. Pre and post obturation CBCT images were used to assess the volume of voids in the filled canals. Data were analyzed using Kruskal–Wallis and Mann-Whitney tests.RESULTS: Subgroup B1 showed the least amount of voids with percentage (14.82%), while subgroup B2showed the highest amount of voids with percentage (40.16%) when compared to the other subgroups. At the coronal level, subgroup B1 showed less volume of voids with mean percentage (13.41±9.11), while subgroup B2 showed higher amount of voids with mean percentage (23.17±5.27) than subgroups (A1and A2). At the middle third, there was no significant difference between the four subgroups. Apically, single cone subgroups (A1 and A2) produced significantly less volume of voids than lateral compaction subgroups.CONCLUSIONS: Protaper Next group obturated with lateral compaction technique provided the least amount of voids followed by the two single cone subgroups, while Wave one group obturated with lateral compaction technique provided the highest amount of voids.
https://adjalexu.journals.ekb.eg/article_59276_75c1678ac6fa615f93f3dd6ad8806b06.pdf
2016-08-01
182
187
10.21608/adjalexu.2016.59276
CBCT
Protaper Next files
Wave one files
AH Plus
lateral compaction
single cone technique
Ellakany
Rodayna M.
1
Bachelor of Dentistry, BDS, Faculty of Dentistry, Misr University for Science and Technology, 6th of October city, Egypt.
LEAD_AUTHOR
Ibrahim
Mohamed M.
2
LEAD_AUTHOR
Mokhless
Nayera A.
3
LEAD_AUTHOR
1. Von Fraunhofer JA, Fagundes DK, McDonald NJ, Dumsha TC. The effect of root canal preparation on microleakage within endodontically treated teeth: an in vitro study. Int Endod J 2000; 33: 355-60.
1
2. Whitworth J. Methods of filling root canals: principles and practices. Endod Topics 2005; 12: 2-24.
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3. Mollander A, Reit C, Dahlén G, Kvist T. Microbiological status of root-filled teeth with apical periodontitis. Int Endod J 1998; 31: 1-7.
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4. Schilder H. Filling root canals in three dimensions. Dent Clin North Am 1967; 11: 723-44.
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5. Zmener O, Pameijer CH, Macri E. Evaluation of the apical seal in root canals prepared with a new rotary system and obturated with a methacrylate based endodontic sealer: an in vitro study. J Endod 2005; 31: 392-5
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6. Wan J, Rasimick BJ, Musikant BL, Deutsch AS. A comparison of cyclic fatigue resistance in reciprocating and rotary nickel-titanium instruments. Aust Endod J 2011; 37: 122-7.
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7. Celik D, Tasdemir T, Er K. Comparative study of 6 rotary nickel-titanium systems and hand instrumentation for root canal preparation in severely curved root canals of extracted teeth. J Endod 2013;39:278-82.
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8. Marzouk AM, Ghoneim AG. Computed tomographic evaluation of canal shape instrumented by different kinematics rotary nickel-titanium systems. J Endod 2013; 39:906-9.
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9. Schafer E, Koster M, Burklein S. Percentage of guttapercha filled areas in canals instrumented with nickeltitanium systems and obturated with matching single cones. J Endod 2013;39:924-8.
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10. Versiani MA, Leoni GB, Steier L, De-Deus G, Tassani S, Pécora JD, et al. Micro-computed tomography study of oval shaped canals prepared with the Selfadjusting File, Reciproc, WaveOne, and Pro-Taper Universal Systems. J Endod 2013;39:1060-6.
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11. Ruddle CJ. The ProTaper endodontic system: geometries, features, and guidelines for use. Dent Today 2001; 20: 60-7.
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12. Ruddle CJ, Machtou P, West JD. The shaping movement: fifth-generation technology. Dent Today 2013; 32: 96-9.
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13. Capar ID, Ertas H, Ok E, Arslan H, Ertas ET. Comparative study of different novel nickel-titanium rotary systems for root canal preparation in severely curved root canals. J Endod 2014;40:852-6.
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14. Elayouti A, Achleithner C, Lost C, Weiger R. Homogeneity and adaptation of a new gutta-percha paste to root canal walls. J Endod 2005; 31: 687-90.
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15. Epley SR, Fleischman J, Hartwell G, Cicalese C. Completeness of root canal obturations: Epiphany techniques versus gutta-percha techniques. J Endod 2006; 32: 541-4.
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16. James BL, Brown CE, Legan JJ, Moore BK, Vail MM. An in vitro evaluation of the contents of root canals obturated with guttapercha and AH-26 sealer or Resilon and Epiphany sealer. J Endod 2007; 33: 1359- 63.
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17. Gulsahi K, Cehreli ZC, Onay EO, Tasman-Dagli F, Ungor M. Comparison of the area of resin-based sealer and voids in roots obturated with Resilon and guttapercha. J Endod 2007; 33: 1338-41.
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18. Patel S, Horner K. The use of cone beam computed tomography in endodontics. Int Endod J 2009; 42: 755-6.
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19. Ingle JI, Bakland LK. Obturation of the radicular space. In: Ingle JI, Bakland LK (eds). Endodontics. 4th ed. Malvern, PA: Williams & Wilkins, 1994. 598-614.
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20. Schaeffer MA, White RR, Walton RE. Determining the optimal obturation length: ameta-analysis of literature. J Endod 2005;31:271-4.
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21. Zogheib C, Naaman A, Medioni E, Bourbouze G, Chirani RA. The quality of Thermafil obturations with different final apical tapers: a three-dimensional microcomputed tomographic comparative study. J Contemp Dent Pract 2012;13:322-6.
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22. Gordon MP, Love RM, Chandler NP. An evaluation of.06 tapered gutta-percha cones for filling of 06 taper prepared curved root canals. Int Endod J 2005;38:87- 96.
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23. Schäfer E, Schrenker C, Zupanc J, Bürklein S. Percentage of Gutta-percha Filled Areas in Canals Obturated with Cross-linked Gutta-percha Corecarrier Systems, Single-Cone and Lateral Compaction Technique. J Endod 2016; 42: 294-8.
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24. FareaM, RaniA, HuseinA,MasudiS, PameijerCH. Evaluation of Gutta-Percha-Filled Areas in Root Canals after Filling by TwoDifferent Obturation Techniques. Aust J Basic ApplSci 2011; 5: 631-6.
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25. Naseri M, Kangarlou A, Khavid A, Goodini M. Evaluation of the quality of four root canal obturation techniques using micro-computed tomography. Iran Endod J 2013; 8: 89-93.
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26. Asheibi F, Qualtrough AJE, Mellor A, Withers PJ, Lowe T. Micro-CT Evaluation of Voids in the Filling Material of Single-Rooted Teeth Obturated with Different Techniques. J Res Pract Dent 2014; 2014: 1- 10.
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27. Yigit D, Yilmaz A, Sendur G, Aslan O, Abbot P. Efficacy of reciprocating and rotary systems for removing root filling material: A micro-computed tomography study. Scanning 2014; 36: 576-81.
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28. Hammad M, Qualtrough A, Silikas N. Evaluation of root canal obturation: a three dimensional in vitro study. J Endod 2009; 35: 541-4.
28
29. Al-Hadlaq SM, Al-Jamhan A, Alsaeed T. Comparison of the single cone and lateralcompaction techniques in sealing 0.04 taper root canal preparations. Gen Dent 2010; 58: e219-22.
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30. Romania C, Beltes P, Boutsioukis C, Dandakis C. Exvivo area-metric analysis of root canal obturation using gutta-percha cones of different taper. Int Endod J 2009;42:491-8.
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31. Monticelli F, Sword J, Martin RL, Schuster GS, Weller RN, Ferrari M, et al. Sealing properties of two contemporary single-cone obturation systems. Int Endod J 2007; 40: 374-85.
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32. Taşdemir T, Er K, Yildirim T, Buruk K, Celik D, Cora S, et al. Comparison of the sealing ability of three fillingtechniques in canals shaped with two different rotary systems: a bacterial leakage study. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2009; 108: e129-34.
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33. Nica LM, Didilescu A, Rusu D, Bacila A, Stratul SI. Photomicrographic evaluation of the apical sealing capacity of three types of gutta-percha master cones: an in vitro study. Odontology 2012; 100: 54-60.
33
34. Marciano MA, Ordinola-Zapata R, Cunha TV, Duarte MA, Cavenago BC, Garcia RB, et al. Analysis of four gutta-percha techniques used to fill mesial root canals of mandibular molars. Int Endod J 2011;44:321-9.
34
ORIGINAL_ARTICLE
MARGINAL LEAKAGE EVALUATION OF GIOMER AND COMPOMER IN PRIMARY TEETH (IN-VITRO STUDY)
INTRODUCTION: Although many restorative materials are available in the market, microleakage around dental restorative materials presents a major problem in clinical dentistry. Giomer (Beautifill II) represents a new generation of dental materials that combines the properties of glass ionomers and composites.OBJECTIVES: The aim of this study was to evaluate the marginal leakage in primary molars class II restored with Giomer and compare it to that of Compomer.MATERIALS AND METHODS: Twenty-four extracted sound primary molars (n=24) were selected for micro leakage test. Standardized class II cavities were prepared and the teeth were randomly assigned to two groups (n=12). Group I was restored with the Giomer (Beautiful II) and Group II was restored with Compomer (Dyract). Micro leakage test: Teeth were subjected to the process of thermocycling (5 ± 2°C–55 ± 2°C, dwell time 30 s, 1000×). Teeth surfaces were coated with three layers of nail polish except a 1 mm wide window surrounding the margins of the restorations. The restored teeth were immersed in 2% methylene blue solution, sectioned and examined under stereomicroscope. Data were collected, tabulated and statistically analyzed using Mann-Whitney test and Wilcoxon Signed Ranks test (p < 0.05).RESULTS: Cervical microleakage scores were higher than occlusal microleakage scores with no significant difference in group I (Giomer) (p=0.915). In group II (Compomer) cervical microleakage scores were significantly higher than occlusal microleakage scores (p=0.033). Group I showed lower microleakage scores than group II and the difference was statistically nonsignificant at p value (0.155).CONCLUSIONS: Although no significant difference was detected, Giomer restorative material showed lower microleakage scores than Compomer. Giomer restorative material could be considered a suitable class II restoration of primary molar in high caries risk children.
https://adjalexu.journals.ekb.eg/article_59278_f63d22a08e45f101625374234559684f.pdf
2016-08-01
188
193
10.21608/adjalexu.2016.59278
Giomers
Compomer
Class II
Microleakage
primary teeth
Eldesouky
Heba I.
1
Bachelor of Dentistry, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
LEAD_AUTHOR
Hanno
Azza G.
2
LEAD_AUTHOR
Bakry
Niveen S.
3
LEAD_AUTHOR
Ahmed
Dawlat M.
4
LEAD_AUTHOR
1. Lam A. Elements in oral health programs. N Y State
1
2. Dent J. 2014; 80:26-30.
2
3. Yengopal V, Harneker SY, Patel N, Siegfried N. Dental fillings for the treatment of caries in the primary dentition. Cochrane Database Syst Rev. 2009; 15: 120- 46.
3
4. Mali P, Deshpande S, Singh A. Microleakage of restorative materials: An in vitro study. J Indian Soc Pedod Prev Dent. 2006; 24: 15-8.
4
5. Fleming GJ, Burke FJ, Watson DJ, Owen FJ. Materials for restoration of primary teeth: I. Conventional materials and early glass ionomers. Dent Update. 2001; 28: 486-91.
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6. Gupta SK, Gupta J, Saraswathi V, Ballal S, Acharya SR. Comparative evaluation of microleakage in Class V cavities using various glass ionomer cements: An in vitro study. J Interdiscip Dent. 2012; 2: 164-9.
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7. Ruse ND. What is a ‘Compomer’? J Can Dent Assoc. 1999; 65: 500-4.
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8. Vleria V, Mondragon E, Watson RE, Garvan C, Mjör IA. A clinical evaluation of a self etching primer and a giomer restorative material: Results in 8 years. J Am Dent Assoc. 2007; 138: 621-7.
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9. Itota T, Carrick TE, Yoshiyama M, McCabe JF. Fluoride release and recharge in giomer, compomer and resin composite. Dent Mater. 2004; 20: 789-95.
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10. Takorova MM, Karajasheva D, Boteva E. Evaluation of microleakage at the interface between cavity walls and giomer and silorane based resins - in vitro study. Scripta Scientifica Medicinae Dentalis. 2015; 1: 38-42.
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11. Zheng TL, Huang C, Zhang ZX, Wang S, Zhang G. Influence of storage methods on microtensile bond strength of dentin adhesive system. Shanghai J Stomatology. 2005;14:147-50.
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12. El-Negoly SA, Ibrahim FM, Ellatif AA. Immunohistochemical expression of tooth pulp dendritic cells as a response to ceramic reinforced glass ionomer restorative materials. Egypt Dent J. 2009; 55: 93-102.
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13. Waggoner WF. Restorative dentistry for the primary dentition. In: Pinkham JR, Casamassimo PS, Mc Tigue DJ, Fields HW, Nowak AJ. Pediatric Dentistry; Infancy through adolescence.4th ed. St. Louis, Mo: El Sevier Saunders; 2005. p. 345-56.
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14. Chan DC, Summitt JB, García-Godoy F, Hilton TJ, Chung KH. Evaluation of different methods for cleaning and preparing occlusal fissures. Oper Dent. 1999;24(6):331-6.
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15. Radhika M, Sajjan GS, Kumaraswamy BN, Mittal N. Effect of different placement techniques on marginal microleakage of deep class II cavities restored with two composite resin formulations. J Conserv Dent. 2010; 13: 9.
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16. Murray PE, Hafez AA, Smith AJ, Cox CF. Bacterial microleakage and pulp inflammation associated with various restorative materials. Dent Mater. 2002;18: 470- 8.
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17. Fabianelli A, Pollington S, Davidson C, Cagidiaco MC, Goracci C. The relevance of microleakage studies. Int Dent SA. 2007; 9: 64-74.
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18. Schüpbach P, Krejci I, Lutz F. Dentin bonding: effect of tubule orientation on hybrid-layer formation. Eur J Oral Sci. 1997; 105: 344-52.
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19. Kugel G, Perry RD, Hoang E, Hoang T, Ferrari M. Dyract compomer: comparison of total etch vs. no etch technique. General dentistry. 1997; 46: 604-6.
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20. Tate WH, You C, Powers JM. Bond strength of compomers to dentin using acidic primers. Am J Dent. 1999; 12: 235-42.
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21. Ernst CP. Positioning self-etching adhesives: versus or in addition to phosphoric acid etching. J Esthet Restor Dent. 2004; 16: 57-69.
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22. Erhardt MC, Cavalcante L, Assad M, Pimenta LA. Influence of Phosphoric Acid Pretreatment on SelfEtching Bond Strengths. J Esthet Restor Dent. 2004; 16: 33-40.
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23. Roberson TM, Heymann HO, Ritter AV. Introduction to composite restorations. In: Roerson TM, (ed). Sturdevant:s Art and Science of operative Dentistry.4th ed. Missouri: Mosby Publishers; 2002. 479-81.
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24. Gale MS, Darvell BW. Thermal cycling procedures for laboratory testing of dental restorations. J Dent. 1999; 27: 89-99.
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25. Alani AH, Toh CG. Detection of microleakage around dental restorations: a review. Oper Dent. 1997; 22: 173- 85.
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26. Dejoi J, Sindres V, Camps J. Influence of criteria on the results of invitro evaluation of microleakage. Dent Mater. 1996; 12: 342-9.
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27. Deliperi S, Bardwell DN, Wegley C, Congiu MD. In vitro evaluation of giomers microleakage after exposure to 33% hydrogen peroxide: self-etch vs total-etch adhesives. Oper Dent 2006; 31: 227-32.
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28. Rekha CV, Varma B J. Comparative evaluation of tensile bond strength and microleakage of conventional glass ionomer cement, resin modified glass ionomer cement and compomer: An in vitrostudy. Contemp Clin Dent.2012; 3: 282-7.
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29. Yeolekar TS, Chowdhary NR, Mukunda KS, Kiran NK. Evaluation of Microleakage and Marginal Ridge Fracture Resistance of Primary Molars Restored with Three Restorative Materials: A Comparative in vitro Study. Int J Clin Pediatr Dent. 2015;8 :108-13.
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30. Aysegül O, Nurhan O, Haluk B, Dilek T. Microleakage of compomer restorations in primary teeth after preparation with bur or air abrasion. Oper Dent. 2005; 30: 164-9.
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31. Shruthi AS, Nagaveni NB, Poornima P, Selvamani M, Madhushankari GS, Reddy VS. Comparative evaluation of microleakage of conventional and modifications of glass ionomer cement in primary teeth: An in vitro study. J Indian Soc Pedod Prev Dent. 2015; 33:279-84.
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32. Roebuck EM, Whitters CJ, Saunders WP. The influence of three Erbium: YAG laser energies on the in vitro microleakage of Class V compomer resin restorations. Int J Paediatr Dent. 2001; 11: 49-56.
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33. Rontani RM, Ducatti CH, Garcia-Godoy F, De Goes MF. Effect of etching agent on dentinal adhesive interface in primary teeth. J Clin Pediatr Dent. 2000; 24: 205-9.
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34. Sengul F, Gurbuz T. Clinical Evaluation of Restorative Materials in Primary Teeth Class II Lesions. J Clin Pediatr Dent. 2015; 39:315-21.
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35. Van Meerbeek B, Vargas M, Inoue S, Yoshida Y, Peumans M, Lambrechts P, et al. Adhesives and cements to promote preservation dentistry. Oper Dent. 2001; 26: 119-44.
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36. Van Meerbeek B, De Munck J, Yoshida Y, Inoue S, Vargas M, Vijay P, et al. Buonocore memorial lecture. Adhesion to enamel and dentin: current status and future challenges. Oper Dent. 2003; 28: 215-35.
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37. Ikemura K, Shinno K, Fujii A, Kimoto FK, Kouro Y. Two-year bonding durability of self-etching adhesives to enamel and dentin. J Dent Res. 2002; 81: 160-9.
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38. Yadav G, Rehani U, RanaV. A Comparative Evaluation of Marginal Leakage of Different Restorative Materials. Int J Clin Ped Dent. 2012; 5: 101-7.
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39. Pashley DH, Carvalho RM, Sano H, Nakajima M, Yoshiyama M, Shono Y et al. The microtensile bond test: A review. J Adhes Dent. 1999 1; 1:299-309.
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ORIGINAL_ARTICLE
Dawlat M.
INTRODUCTION: The greatest preventive challenge in dentistry is the control of dental biofilm and consequently avoiding dental caries and gingival diseases. As an adjunct to the mechanical oral hygiene measures, antibacterial agents seem to offer great benefits in the control of plaque formation and gingivitis, especially in high risk patients with orthodontic appliances.OBJECTIVES: The aim of this study was to investigate the effect of propolis mouthwash in children with fixed space maintainers regarding quantity of dental plaque and its microbial population.MATERIALS AND METHODS: Forty children with space maintainers with an age range of 6 to 8 years were randomly assigned into 2 groups (test and control). The test group received the propolis mouthwash, and the controls received a placebo. All the patients were examined clinically to assess plaque accumulation using the plaque control record before and after the treatment. Plaque sampling and microbiological evaluation was used to estimate the numbers of colony forming units.RESULTS: Data showed that the controls experienced no significant reduction in microbial plaque count from baseline to the end of 3 weeks (P≤0.11) whereas in the propolis mouthwash users there was a significant difference after 3 weeks (P≤0.0001). Among groups comparison of total microbial plaque counts before intervention, showed a significant difference (P≤0.02), and after the intervention, there was no significant difference between groups (P≤0.72). No significant difference was found in plaque index scores in the controls from baseline to the end of 3 weeks (P≤0.15), whereas in the propolis group there was a highly significant difference (P≤0.0001). Comparisons of mean plaque values between test and control groups before intervention showed significant difference (P≤0.04). After intervention the difference increased dramatically to a highly significant value (P≤0.008).CONCLUSIONS: A mouthwash containing propolis significantly reduced bacterial count and plaque accumulation when used for 3 weeks.
https://adjalexu.journals.ekb.eg/article_59280_112b2d194d045c67d4ef00f81a1a18a8.pdf
2016-08-01
194
198
10.21608/adjalexu.2016.59280
Propolis
plaque
children
high risk
Antibacterial
Al-Hasani
Mazen M.
1
Bachelor of Dental Surgery, University of Science and Technology, Yemen
LEAD_AUTHOR
Hanno
Azza G.
2
LEAD_AUTHOR
Dowidar
Karin M.
3
LEAD_AUTHOR
Mostafa
Osama N.
4
LEAD_AUTHOR
Soliman
Sobhi A.
5
LEAD_AUTHOR
1. Dymock D. 4.2. Detection of microorganisms in dental plaque. In: Jass J, Surman S, Walker J, (eds), Medical biofilms John Wiley and Sons Ltd. 2003; 199-220.
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2. Li J, Helmerhorst EJ, Leone CW, Troxler RF, Yaskell T, Haffajee AD, et al. Identification of early microbial colonizers in human dental biofilm. J Appl Microbiol. 2004;97:1311-8.
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3. Rozkiewicz D, Daniluk T, Zaremba ML, CylwikRokicka D, Luczaj-Cepowicz E, Milewska R, et al. Bacterial composition in the supragingival plaques of children with and without dental caries. Adv Med Sci. 2006;51:182-6.
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12. Duarte S, Koo H, Bowen WH, Hayacibara MF, Cury JA, Ikegaki M, et al. Effect of a novel type of propolis and its chemical fractions on glucosyltransferases and on growth and adherence of mutans streptococci. Biol Pharm Bull. 2003;26:527-31.
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13. Skaba D, Morawiec T, Tanasiewicz M, Mertas A, Bobela E, Szliszka E, et al. Influence of the toothpaste with brazilian ethanol extract propolis on the oral cavity health. Evid Based Complement Alternat Med. 2013; 2013: 215391.
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14. Koo H, Rosalen PL, Cury JA, Park YK, Bowen WH. Effects of compounds found in propolis on Streptococcus mutans growth and on glucosyltransferase activity. Antimicrob Agents Chemother. 2002;46:1302-9.
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15. Kumar R, Kapoor DN, Jain A, Saimbi CS, Sharma VP, Tandon P. Microbicidal Effect of Different Mouthwasheson Patients Undergoing Fixed OrthodonticTreatmnent. The J Indian Orthod Soc. 2006;39:139-46.
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22.Russell FM, Biribo SSN, Selvaraj G, Oppedisano F, Warren S, Seduadua A, et al. As a bacterial culture medium, citrated sheep blood agar is a practical alternative to citrated human blood agar in laboratories of developing countries. J Clin Microbiol. 2006;44:3346-51.
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25. Arikan V, Kizilci E, Ozalp N, Ozcelik B. Effects of Fixed and Removable Space Maintainers on Plaque Accumulation, Periodontal Health, Candidal and Enterococcus Faecalis Carriage. Med Princ Pract. 2015;24:311-7.
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27. Hegde KS, Bhat SS, Rao A, Sain S. Effect of Propolis on Streptococcus mutans Counts: An in vivo Study. Int J Clin Pediatr Dent. 2013;6:22-5.
27
28. Pereira EMR, da Silva JLDC, Silva FF, De Luca MP, Lorentz TCM, Santos VR. Clinical evidence of the efficacy of a mouthwash containing propolis for the control of plaque and gingivitis: a phase II study. Evid Based Complement Alternat Med. 2011;2011:750249.
28
29. Murray MC, Worthington HV, Blinkhorn AS. A study to investigate the effect of a propolis‐containing mouthrinse on the inhibition of de novo plaque formation. J Clin Periodontol. 1997;24:796-8.
29
ORIGINAL_ARTICLE
CONE-BEAM COMPUTED TOMOGRAPHY VERSUS DIGITAL ORTHOPANTOMOGRAPHY IN TREATMENT PLANNING FOR MANDIBULAR DENTAL IMPLANTS
INTRODUCTION: successful implant treatment depends on efficient planning. This should include information on height, width, morphology and density of the bone, as well as identification and location of anatomical landmarks in imaging exams.OBJECTIVES: to investigate the impact of cone-beam computed tomography on implant planning and on prediction of final implant size.MATERIALS AND METHODS: overall, 17 implant were placed in the posterior mandible of ten patients with age ranging between (25-50) years of both sexes. The patients were referred for pre surgical images. Initial planning of implant length and width was assessed based on panoramic radiograph exam, and final planning on cone-beam computed tomography exam to complement diagnosis. The actual dimensions of the implants placed during surgery were compared with those obtained during initial and final planning.RESULTS: ten patients were selected, 4 males and 6 females and age ranged between (25-50) years. The study included 17 implants. Agreement in implant length was 58.8% between initial and final planning, and correct prediction of the actual implant length was 58.8% and 100%, using panoramic radiograph and cone-beam computed tomography exams, respectively. Agreement in implant width assessment ranged from 64.7% to 100%. A paired comparison of the frequency of changes between initial or final planning and implant placement (paired t-test) showed greater frequency of changes in initial planning for implant length (p < 0.056), but not for implant width (p=0.342).CONCLUSIONS: it was concluded that cone-beam computed tomography improves the ability of predicting the actual implant length and reduces inaccuracy in surgical dental implant planning.
https://adjalexu.journals.ekb.eg/article_59283_87d4c786f445172d72db5189ef8df884.pdf
2016-08-01
199
205
10.21608/adjalexu.2016.59283
dental implant
Radiography
Panoramic
Cone-beam computed tomography
Albelbeisi
Tareq M.
1
B.D.S. Faculty of Dentistry, October 6 University.
LEAD_AUTHOR
Khtob
Ahmed R
2
LEAD_AUTHOR
Hassan
Nagy E
3
LEAD_AUTHOR
1. Holst S, Blatz M.B., Eitner S. Precision for Computer – Guided Implant Placement: Using 3D Planning Software and fixed Intraoral Reference Points. J Oral Maxillofac Surg 2007; 65: 393-9.
1
2. Harris D, Buser D, Dula K, Grondahl K, Haris D, Jacobs R, et al. E.A.O. guidelines for the use of diagnostic imaging in implant dentistry. A consensus workshop organized by the European Association for Osseointegration in Trinity College Dublin. Clin Oral Implants Res 2002; 13: 566-70.
2
3. Tyndall DA, Price JB, Tetradis S, Ganz SD, Hildebolt C, ScarfeWC. Position statement of the American Academy of Oral and Maxillofacial Radiology on selection criteria for the use of radiology in dental implantology with emphasis on cone beam computed tomography. Oral Surg Oral Med Oral Pathol Oral Radiol 2012; 113: 817-26.
3
4. Engelman MJ, Sorensen JA, Moy P. Optimum placement of osseointegrated implants. J Prothet Dent. 1988; 59: 467-73.
4
5. DaSilva JD, Schnitman PA, Wohrle PS, Wang HN. Influence of site on implant survival: 6-year results. J Dent Res 1992; 71: 56-59.
5
6. Tyndall AA, Brooks SL. Selection criteria for dental implant siteimaging: a position paper of the American Academy of Oral and Maxillofacial radiology. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2000; 89: 630-7.
6
7. Beason RC, Brooks SL. Preoperative implant site assessment in southeast Michigan. J Dent Res 2001; 80: 137-40.
7
8. Dula K, Mini R, van der Stelt PF, Buser D. The radiographic assessment of implant patients: decision-making criteria. Int J Oral Maxillofac Implants 2001; 16: 80-9.
8
9. Stramotas S, Geenty JP, Petocz P, Darendeliler MA. Accuracy of linear and angular measurements on panoramic radiographs taken at various positions in vitro. Eur J Orthod 2002; 24: 43-52.
9
10. Quereshy FA, Savell TA, Palomo JM. Applications of cone beam computed tomography in the practice of oral and maxillofacial surgery. J Oral Maxillofac Surg 2008; 66: 791-6.
10
11. Miracle AC, Mukheji SK. Conebeam CT of the head and neck, part 1: physical principles. AJNR Am J Neuroradiol 2009; 30: 1088-96.
11
12. White SC, Pharoah MJ, Frederiksen NL. Computed Tomography. In: White SC, Pharoah MJ (eds). Oral Radiology Principles and interpretation. St. Louis, Missouri, USA: Mosby Elsevier, 2008. 207-12.
12
13. Bartling R, Freeman K, Kraut RA. The incidence of altered sensation of the mental nerve after mandibular implant placement. J Oral maxillofac Surg 1999; 57:1408-11.
13
14. Greenstein G, Tarnow D. The mental foramen and nerve: clinical and anatomical s factors related to dental implant placement. J Periodontol 2006; 77: 1933-7.
14
15. Vazquez L, Saulacic N, Belser US. Bernard J. Efficacy of panoramic radiographs in the preoperative planning of posterior mandibular implants: a prospective clinical study of 1527 consecutively treated patients. Clin Oral Implants Res 2008; 19: 81-5.
15
16. Kraut RA. Chahal O. Management of patients with trigeminal nerve injuries after mandibular implant placement. J Am Dent Assoc 2002; 133: 1351-4.
16
17. Boonstra AM, Schiphorst Preuper HR, Reneman MF, Posthumus JB, Stewart RE. Reliability and validity of the visual analogue scale for disability in patients with chronic musculoskeletal pain. Int J Rehabil Res 2008; 31: 165-9.
17
18. McClanahan SF, Bartizek RD, Biesbrock AR. Identification and consequences of distinct Löe-Silness gingival index examiner styles for the clinical assessment of gingivitis. J Periodontol 2001; 72: 383-92.
18
19. Steflik D, Koth DL, Robinson F, McKinney R, Davis B, Morris C, et al. Prospective investigation of the singlecrystal sapphire endosteal dental implant in humans: Tenyear results. J Oral Implantol 1995; 21: 8-18.
19
20. Batenburg RH, Stellingsma K, Raghoebar GM, Vissink A. Bone height measurements on panoramic radiographs: the effect of shape and position of edentulous mandibles. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 1997; 84: 430-5.
20
21. Choi YG, Kim YK, Eckert SE, Shim CH. Cross-sectional study of the factors that influence radiographic magnification of implant diameter and length. Int J Oral Maxillofac Implants 2004; 19: 594-6.
21
22. White SC, Heslop EW, Hollender LG, Mosier KM, Ruprecht A, Shrout MK. Parameters of radiologic care: An official report of the American Academy of Oral and Maxillofacial Radiology. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2001; 91: 498-511.
22
23. Vazquez L, Nizamaldin Y, Combescure C, Nedir R, Bischof M, Dohan Ehrenfest DM, et al. Accuracy of vertical height measurements on direct digital panoramic radiographs using posterior mandibular implants and metal balls as reference objects. Dentomaxillofac Radiol 2013; 42:20110429.
23
24. Vazques L, Nizam Al Din Y, Christoph Belser U, Comescure C, Bernard JP.Reliability of the vertical magnification factor on panoramic radiographs: clinical implications for posterior mandibular implants. Clin Oral Implants Res 2011; 22: 1420-5.
24
25. Gerlach NL, Meijer GJ, Maal TJ, Mulder J, Rangel FA, Borstlap WA, et al. Reproducibility of 3 different tracing methods based on cone beam computed tomography in determining the anatomical position of the mandibular canal. J Oral Maxillofac Surg 2010; 68: 811-7.
25
26. Renton T, Dawood A, Shah A, Searson L, Yilmaz Z. Postimplant neuropathy of the trigeminal nerve. A case series. Br Dent J 2012; 212: E17.
26
27. Benavides E, Rios HF, Ganz SD, An CH, Resnik R, Reardon GT, et al. Use of cone beam computed tomography in implant dentistry: the International Congress of Oral Implantologists consensus report. Implant Dent 2012; 21: 78-86.
27
28. Alsaadi G, Quirynen M, Michiles K, Teughels W, Komárek A, van Steenberghe D. Impact of local and systemic factors on the incidence of failures up to abutment connection with modified surface oral implants. J Clin Periodontol 2008; 35: 51-7.
28
29. Renouard F, Nisand D. Impact of implant length and diameter on survival rates. Clin Oral Implants Res 2006; 17(Suppl 2): 35-51.
29
30. Herrmann I, Lekholm U, Holm S, Kultje C. Evaluation of patient and implant characteristics as potential prognostic factors for oral implant failures. Int J Oral Maxillofac Implants 2005; 20: 220-30.
30
31. Weng D, Jacobson Z, Tarnow D, Hürzeler MB, Faehn O, Sanavi F, et al. A prospective multicenter clinical trial of 3i machined-surface implants: results after 6 years of followup. Int J Oral Maxillofac Implants 2003; 18: 417-23.
31
32. Lemmerman KJ, Lemmerman NE. Osseointegrated dental implants in private practice: a long-term case series study. J Periodontol 2005; 76: 310-9.
32
33. Romeo E, Lops D, Margutti E, Ghisolfi M, Chiapasco M, Vogel G. Long-term survival and success of oral implants in the treatment of full and partial arches: a 7-year prospective study with the ITI dental implant system. Int J Oral Maxillofac Implants 2004; 19: 247-59.
33
34. Frei C, Buser D, Dula K. Study on the necessity for crosssection imaging of the posterior mandible for treatment planning of standard cases in implant dentistry. Clin Oral Implants Res 2004; 15: 490-7.
34
35. Diniz AF, Mendonça EF, Leles CR, Guilherme AS, Cavalcante MP, Silva MA. Changes in the pre-surgical treatment planning using conventional spiral tomography. Clin Oral Implants Res 2008; 19: 249-53.
35
ORIGINAL_ARTICLE
EVALUATION OF IMMEDIATELY LOADED KNIFE THREAD IMPLANTS FOR THE REPLACEMENT OF MANDIBULAR SINGLE- ROOTED TEETH (CLINICAL & RADIOGRAPHIC STUDY)
INTRODUCTION: Modern implantology is changing direction towards the development of new implant macrodesigns that are able to provide a high level of physico-mechanical characteristics and can offer a high level of primary implant stability that is important for long-term success of the immediate loading treatment protocols.OBJECTIVES: Clinical and radiographic evaluation of immediately loaded knife thread implants for the replacement of mandibular single- rooted teeth.MATERIALS AND METHODS: This study was conducted on ten adult patients with missing mandibular single rooted teeth. AnyRidge knife threaded tapered implants were inserted and immediately loaded with a non-occluding temporary crowns immediately after implant placement. After 3 months, final crowns were delivered. All implants were followed for 6 months. Clinically, each patient was evaluated for pain, tenderness or discomfort, presence of swelling or infection and mobility of the implant. Radiographically, standardized periapical x-ray films were taken then Image-J processing Program was used for the assessment of marginal bone level and bone density around the implant.RESULTS: In only one case moderate pain, peri-implant infection with suppuration and grade III mobility was registered in the first follow up month, that was regarded as a failure case and the implant was removed, resulting in implant survival rates of 90% after six months. There was a statistically significant increase in bone density around the implants throughout the evaluation period. The mean of peri-implant bone loss increased from immediately post-operative to the 3rd month. This increase was statistically significant. Then there was statistically insignificant decrease from the 3rd to the 6th months. CONCLUSIONS: Immediate non-occlusal loading of knife thread implants for the replacement of mandibular single rooted teeth was a successful treatment procedure, with satisfactory clinical outcomes, good survival rate (90%) and a low incidence of complications.
https://adjalexu.journals.ekb.eg/article_59284_5cc505ca05dbc9d9ff90010ae727b923.pdf
2016-08-01
206
213
10.21608/adjalexu.2016.59284
immediate loading
Knife threads
dental implant
Nanostructured calcium-incorporated surface
Implant design
Thread design
Abd El-Moneim
Nourhan M.
1
Dentist, Ministry of Health, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
LEAD_AUTHOR
El Sheikh
Samraa A.
2
LEAD_AUTHOR
Tehemar
Sherif A.
3
LEAD_AUTHOR
1. Chaushu G, Chaushu S, Tzohar A, Dayan D. Immediate loading of single-tooth implants: immediate versus nonimmediate implantation. Int J Oral Maxillofac Implants 2001; 16: 267–72.
1
2. CheeW, Jivraj S. Efficiency of immediately loaded mandibular full-arch implant restorations. Clin Oral Impl Res 2003; 5: 52-6.
2
3. Esposito M, Grusovin MG, Achille H, Coulthard P, Worthington HV. Interventions for replacing missing teeth: different times for loading dental implants. Cochrane Database Syst Rev 2009; 1:1-38.
3
4. Hui E, Chow J, Li D, Liu J, Wat P, Law H. Immediate provisional for single-tooth implant replacement with Brånemark system: preliminary report. Clin Implant Dent Relat Res 2001; 3: 79-86.
4
5. Nelson K, Semper W, Hildebrand D, Özyuvaci H. A retrospective analysis of sandblasted, acid-etched implants with reduced healing times with an observation period of up to 5 years. Int J Oral Maxillofac Implants 2008; 23: 726- 32.
5
6. O’Sullivan D, Sennerby L, Jagger D, Meredith N. Comparison of two methods of enhancing implant primary stability. Clin Implant Dent Relat Res 2004; 6: 48-57.
6
7. Szmukler-Moncler S, Salama H, Reingewirtz Y, Dubruille JH. Timing of loading and effect of micro-motion on boneimplant interface. A review of experimental literature. J Biomed Mat Res 1998; 43: 192-203.
7
8. Bilhan H, Geckili O, Mumcu E, Bozdag E, Sünbüloðlu E, Kutay O. Influence of surgical technique, implant shape and diameter on the primary stability in cancellous bone. J Oral Rehabil 2010; 37: 900-7.
8
9. Meltzer AM. Primary stability and initial bone-to-implant contact: The effects of immediate placement and restoration of dental implants. J Implant Reconstr Dent 2009; 1: 35-41.
9
10. Torroella-Saura G, Mareque-Bueno J, Cabratosa-Termes J, Hernández-Alfaro F, Ferrés-Padró E, Calvo-Guirado JL. Effect of implant design in immediate loading. A randomized, controlled, split-mouth, prospective clinical trial. Clin Oral Impl Res 2015; 26: 240-4.
10
11. Misch, C.E., Wang, H.L., Misch, C.M., Sharawy, M., Lemons, J. & Judy, K.W. Rationale for the application of immediate load in implant dentistry: part II. Implant Dentistry 2004; 13: 310–21.
11
12. Orsini E, Salgarello S, Bubalo M, Lazic Z, Trire A, Martini D, et al. Histomorphometric evaluation of implant design as a key factor in peri-implant bone response: a preliminary study in a dog model. Minerva Stomatologica 2009; 58: 263-75.
12
13. Luongo G, Lenzi C, Raes F, Eccellente T, Ortolani M, Mangano C. Immediate functional loading of single implants: a 1-year interim report of a 5-year prospective multicentre study. Eur J Oral Implantol 2014; 7: 1-13.
13
14. Felice P, Grusovin MG, Barausse C, Grandi G, Esposito M. Safety and effectiveness of early loaded maxillary titanium implants with a novel nanostructured calcium-incorporated surface (Xpeed): 3-year results from a pilot multicenter randomised controlled trial. Eur J Oral Implantol. 2015; 8: 245-54.
14
15. Lee SY, Yang DJ, Yeo S, An HW, Ryoo KH, Park KB. The cytocompatibility and osseointegration of the Ti implants with XPEED® surfaces. Clin Oral Impl Res 2012; 23: 1283-9.
15
16. Farrara JT, Young JP Jr., LaMoreauxb L, Werthb JL, Poole RM. Clinical importance of changes in chronic pain intensity measured on an 11-point numerical pain rating scale. Pain 2001; 94: 149-58.
16
17. McKinney R, Koth DL, Steflik D, Robinson F, Davis B, Morris C, et al. Prospective investigation of single-crystal sapphire endosteal dental implant in humans: Ten year results. J Oral Implantol 1995; 21: 8-18.
17
18. Abramoff MD, Magelhaes PJ, Ram SJ. Image Processing with Image J. Biophotonics Int 2004; 11: 36-42.
18
19. Dias DR, Leles CR, Lindh C, Ribeiro-Rotta RF. The effect of marginal bone level changes on the stability of dental implants in a short-term evaluation. Clin. Oral Impl. Res. 2015; 26:1185-90.
19
20. Burtscher D, Norer B, Dalla Torre D, Beier U, Schubert K, Grunert I. A 7-year Prospective Radiographic Evaluation of marginal bone level around two different implant systems: a randomized clinical trial. Clin Oral Impl Res 2015; 26: 1244-9.
20
21. Berberi AN, Sabbagh JM, Aboushelib MN, Noujeim ZF, Salameh ZA. A 5-year comparison of marginal bone level following immediate loading of single-tooth implants placed in healed alveolar ridges and extraction sockets in the maxilla. Front Physiol 2014; 5:1-7.
21
22. Kirkpatrick LA, Feeney BC. A simple guide to IBM SPSS statistics for version 20.0. Student ed. Belmont, Calif.: Wadsworth, Cengage Learning, 2013.
22
23. Esposito M, Coulthard P, Thomsen P, Worthington HV. The role of implant surface modifications, shape and material on the success of osseointegrated dental implants. A Cochrane systematic review. Eur J Prosthodont Restor Dent 2005; 13: 15-31.
23
24. Porter JA, von Fraunhofer JA. Success or failure of dental implants? A literature review with treatment considerations. Gen Dent 2005; 53: 423-32.
24
25. Schwarz F, Sanz-Martın I, Kern J-S, Taylor T, Schaer A, Wolfart S, et al. Loading protocols and implant supported restorations proposed for the rehabilitation of partially and fully edentulous jaws. Camlog Foundation Consensus Report. Clin Oral Impl Res 2016.
25
26. Kim TH, Knezevic A, Jorgensen M, Rich S, Nowzari H. Prospective, 1-year observational study of doublethreaded tapered body dental implants with immediate loading. J Prosthet Dent 2015; 114: 46-51.
26
27. Sanz-Sánchez I, Sanz-Martín I, Figuero E, Sanz M. Clinical efficacy of immediate implant loading protocols compared to conventional loading depending on the type of the restoration: a systematic review. Clin Oral Implants Res 2015; 26: 964-82.
27
28. Al-Sabbagh M, Bhavsar I. Key local and surgical factors related to implant failure. Dent Clin North Am 2015; 59: 1- 23.
28
29. Ramachandran A, Singh K, Rao J, Mishra N, Jurel SK, Agrawal KK. Changes in alveolar bone density around immediate functionally and nonfunctionally loaded implants. J Prosthet Dent 2015; 11: 1-6.
29
30. Mangano FG, Zecca PA, van Noort R, Apresyan S, Iezzi G, Piattelli A, et al. Custom-Made Computer-AidedDesign/Computer- Aided-Manufacturing Biphasic Calcium-Phosphate Scaffold for Augmentation of an Atrophic Mandibular Anterior Ridge. Case Rep Dent 2015; 2015: 941265.
30
ORIGINAL_ARTICLE
PROTECTIVE ROLE OF HONEY AFTER LEAD TOXICITY EFFECT ON ALBINO RATS LINGUAL PAPILLAE
INTRODUCTION: Studies concerning exposure of human to lead during daily activities are sometimes leading to many complications. Lead is a poisonous heavy metal, it’s toxicity can change the antioxidant balance in biological tissues. Honey is rich in phenolic acids and flavonoids, which exhibit a wide range of biological effects and act as natural antioxidants.OBJECTIVES: (1) To investigate the histological changes in lingual papillae following lead toxicity in experimental rats. (2) To assess the possible protective effects of honey using scanning electron microscopy (SEM).MATERIALS AND METHODS: Thirty two adult male albino rats were divided into four groups, eight rats/ group. Group I (control): 1ml distilled water. Group II (control + honey): 50 mg/kg honey + 1ml distilled water. Group III (lead): 16.5 mg lead acetate. Group IV (honey + lead): 16.5 mg lead acetate + 50 mg/kg honey. All doses were given by oral intubations daily /6 weeks. After 6 weeks, rats were sacrificed, and tongues were dissected out and processed for SEM.RESULTS: In Group II: Increased papillary density of the filiform papillae was noticed. In Group III the filiform papillae were distorted. Some appeared shorter while others had eroded tips and hyperkeratosis. Complete loss of papillae were seen in some samples. Disfigured fungiform papillae with swollen taste buds were seen. In Group IV, filiform and fungiform papillae appeared close to normal with minimal changes.CONCLUSIONS: The atrophy observed in Group III could be explained by lead-induced oxidative stress. Lead toxicity had a dual effect where increased free radical formation together with depletion of endogenous antioxidant enzymes resulted in inflammation and increased cell injury. Lead causes anemia and decreased salivary secretion, which may explain the epithelial erosion. Honey exerted its protective role through restoring enzymatic activity and through its antioxidant mechanism.
https://adjalexu.journals.ekb.eg/article_59287_f3b05b5862713aa8aee9e8972e0964bb.pdf
2016-08-01
214
219
10.21608/adjalexu.2016.59287
Honey
filiform papillae
lead toxicity
fungiform papillae
SEM
El shawakh
Waleed O.
1
B.D.S. Faculty of Dentistry Triopli University
LEAD_AUTHOR
El-Sawa
Afaf A.
2
LEAD_AUTHOR
Shafik
Sahar K.
3
LEAD_AUTHOR
1. Moniuszko-Jakoniuk J, Brzoska M. Environment pollution and Health. Lek Wojsk. 1999; 75:419-426.
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2. Aronson AL. Outbreaks of plumbism in animals associated with industrial lead operations. Clin Toxicol. 1972; 5:169-73.
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ORIGINAL_ARTICLE
OBESITY AND RELATED ORAL HEALTH VARIABLES AMONG A GROUP OF YOUNG ADOLESCENTS
INTRODUCTION: Obesity and dental caries both are multifactorial diseases that impact adolescent's health and psychosocial development. They both share common, modifiable, influences such as diet and lifestyle.OBJECTIVES: the aim of this study was to assess young adolescents' obesity and dietary habits association with dental caries experience and stimulated salivary flow rate.MATERIALS AND METHODS: In a cross-sectional comparative study designs, fifty obese adolescents with mean age of 13.0±0.54 years and fifty normal weight adolescents with mean age of 12.87±0.45 years were selected from preparatory schools in Alexandria. They were clinically examined with respect to dental caries, as well as answered a questionnaire concerning sociodemographic background, oral hygiene practice, 24-hour dietary recall and food frequency questionnaire. Body mass index (kg/m2) for age and flow rate of stimulated whole saliva (ml/min) was determined. Total cariogenic food exposure time was calculated.RESULTS: The obese subjects exhibited significant higher mean score of DMFS (4.84±3.65 for male - 5.00±2.04 for female) vs. 0.76±1.39 for male - 0.44±2.71 for female in normal weight group (p= 0.011) and (p= 0.001) respectively. Obese group had lower flow rate of stimulated whole saliva (1.74±0.75 ml/min for male-1.80±0.65 ml/min for female) vs 2.86±0.70 for males- 2.83±0.65 for females in normal weight group (p=0.001) and (p=0.018) respectively. Obese subjects exhibited significant higher cariogenic food total exposure time with mean of 155.60±59.56 min/day vs. 50.40±34.58 min/day (p < 0.001). No significant difference existed between the two groups regarding different food groups consumption except for grain group according to the American Academy of Pediatric Dentistry (AAPD) recommendations. In a multiple stepwise linear regression model for DMFS predictors, DMFS was significantly associated with lower flow rate of stimulated whole saliva (p < 0.001), cariogenic food total exposure time, added sugar and milk group consumption.CONCLUSIONS: Obese young adolescents are more likely to suffer from dental caries and lower salivary flow rate compared to normal weight ones. They are more liable to consume cariogenic snacks and grain group food items.
https://adjalexu.journals.ekb.eg/article_59289_58e960da7886dbc084324789c68df87c.pdf
2016-08-01
220
225
10.21608/adjalexu.2016.59289
Obesity
salivary flow
dental caries
Dietary habits
cariogenic food total exposure time
Barakat
Yomna A.
1
Bachelor of Dentistry, Faculty of Dentistry, Alexandria University, Egypt.
LEAD_AUTHOR
Hanno
Azza G.
2
LEAD_AUTHOR
Bakry
Niveen S.
3
LEAD_AUTHOR
Tayel
Dalia I.
4
LEAD_AUTHOR
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