COMPARISON OF STRESSES TRANSMITTED TO ONEPIECE AND TWO-PIECE NARROW-DIAMETER IMPLANTS IN MANDIBULAR OVER DENTURES (A FINITE ELEMENT STRESS ANALYSIS)

Document Type : Original Article

Authors

1 BDS, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.

2 Professor of Prosthodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.

3 Lecturer, The Dept. of Naval Architecture and Marine Eng., Faculty of Engineering, Alexandria University, Alexandria, Egypt

Abstract

INTRODUCTION: The goal of modern dentistry is to restore the patient to normal contour, function and esthetics. And what makes implant dentistry unique is the ability to achieve this goal regardless of the atrophy, disease or injury. Implants with small diameters can be used successfully in a variety of clinical situations. A main drawback of Narrow-diameter implants is the possibility of not reaching the required primary stability (> 35Ncm). In such cases, being a one-piece implant, occlusal stresses are expected to disturb proper osseointegration. Lately, 2-piece narrow diameter implants were introduced to the market combining the undisturbed healing period required for proper osseointegration and the avoidance of extensive surgeries for bone augmentation. OBJECTIVES The purpose of this study is to determine, using 3-dimensional finite element analysis, whether 1-piece and 2-piece narrow diameter implants with equivalent geometries exhibit stresses and strains differently under applied loading conditions when used to retain a mandibular overdenture and, to evaluate how stresses are transmitted to the surrounding bone. MATERIALS AND METHODS: A computer based numerical model is structured for the anterior segment of the mandible with, 2 narrow diameter implants retaining a mandibular overdenture, one being a 1-piece and the other being a 2-piece. A 35N, and a 100N loads were applied through the overdenture, and Von Mises stresses were analyzed along the implants and the surrounding bone. RESULTS Stresses around the 2-piece design were greater than those around the 1-piece design, but the values recorded were still below the yield strength of implants and bone. CONCLUSIONS: A 2-piece narrow diameter implant can be a reliable treatment option to retain overdentures in cases where immediate loading is not recommended

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References

1. Martínez-Lage-Azorín JF, Segura-Andrés G, FausLópez J, Agustín-Panadero R. Rehabilitation with implant-supported overdentures in total edentulous patients: a review. J Clin Exp Dent. 2013; 5: 267-72.
2. Misch CE. Contemporary Implant Dentistry. 3rd ed. Missouri: Elsevier Mosby; 2008.
3. van Steenberghe D, Quirynen M, Naert I, Maffei G, Jacobs R. Marginal bone loss around implants retaining hinging mandibular overdentures, at 4-, 8- and 12-years follow-up. J Clin Periodontol. 2001; 28: 628-33.
4. Ring ME. Pause for a moment in dental history. A thousand years of dental implants. A definitive history-part 2. Compend Contin Educ Dent. 1988; 14: 1132-42.
5. Ormianer Z, Ben Amar A, Duda M, Marku-Cohen S, Lewinstein I. Stress and strain patterns of 1-piece and 2-piece implant systems in bone: A 3 dimensional finite element analysis. Implant Dent. 2012; 21: 39- 45.
6. Arun Kumar G, Mahesh B, George D. Threedimensional finite element analysis of stress distribution around implant with straight and angled abutments in different bone qualities. J Indian Prosthodont Soc. 2013; 13: 466-72.
7. Yaltirik M, Gökçen-Röhlig B, Ozer S, Evlioglu G. Clinical evaluation of small diameter straumann implants in partially edentulous patients: a 5-year retrospective study. J Dent (Tehran). 2011;
8: 75-80. 8. Alsaadi G, Quirynen M, Michiels K, Jacobs R, Van Steengerghe D. A biomechanical assessment of the relation between the oral implant stability at insertion and subjective bone quality assessment. J Clin Periodontol. 2007; 34: 359-66.
9. Bornstein MM, Al-Nawas B, Kuchler U, Tahmaseb A. Consensus statements and recommended clinical procedures regarding contemporary surgical and radiographic techniques in implant dentistry. Int J Oral Maxillofac Implants. 2014; 29(Suppl): 78-82.
10. Baggi L, Cappelloni I, Di Girolamo M, Maceri F, Vairo G. The influence of implant diameter and length on stress distribution of osseointegrated implants related to crestal bone geometry: A three-dimensional finite element analysis. J Prosthet Dent. 2008; 100: 422-31.
11. Frost HM. Wolff’s Law and bone’s structural adaptation to mechanical use: an overview for clinicians. Angle Orthod. 1994; 64: 175-88.
12. Huang HM, Pan LC, Lee SY, Ho KN, Fan KH, Chen CT. Natural frequency analysis for the stability of a dental implant by finite element method. J Med Biol Eng. 2001; 21: 61-70.
13. Geng JP, Tan KB, Liu GR. Application of finite element analysis in implant dentistry: a review of the literature. J Prosthet Dent. 2001; 85: 585- 98.
14. Padhye OV, Herekar M, Patil V, Mulani S, Sethi M, Fernandes A. Stress distribution in bone and implants in mandibular 6-implantsupported cantilevered fixed prosthesis: A 3D finite element study. Implant Dent. 2015; 24: 680-5.
15. Rubo JH, Souza EA. Finite element analysis of stress in bone adjacent to dental implants. J Oral Implantol. 2008; 34: 248-55.
16. Aleisa K. The effect of attachment pick-up timing on the retention of locator overdenture posts. Pakistan Oral Dental J. 2012; 32: 543-8.
17. Bellini CM, Romeo D, Galbusera F, Agliardi E, Pietrabissa R, Zampelis A, et al. A finite element analysis of tilted versus non-tilted implant configuration in the edentulous maxilla. Int J Prosthodont. 2009; 22: 155-7.
18. Misch CE. Density of bone: Effect on treatment plans, surgical approach, healing and progressive loading. Int J Oral Implantol. 1990; 6: 23-31.
19. Greco GD, Jansen WC, Landre J, Seraidarian PI. Stress analysis of the free-end distal extension of an implant-supported mandibular complete denture. Braz Oral Res. 2009; 23: 175- 81.
20. Menicucci G. Mandibular implant-retained overdenture: finite element analysis of two anchorage systems. Int J Oral Maxillofac Implants. 1998; 13: 369-76.
21. Fujimoto T, Niimi A, Murakami I, Ueda M. Use of new magnetic attachments for implantsupported overdentures. J Oral Implantol. 1998; 24: 147-51.
22. Barao VA, Assuncao WG, Tabata LF, Delben JA, Gomes EA, De Sousa EA, et al, Finite element analysis to compare complete denture and implant-retained overdentures with different attachment systems. J Craniofac Surg. 2009; 20: 1066-71.
23. Chun HJ, Park DN, Han CH, Heo SJ, Heo MS, Koak JY. Stress distribution in maxillary bone surrounding overdenture implants with different overdenture attachments. J Oral Rehabil. 2005; 32: 193-205.
24. Ammar HH, Ngan P, Crout RJ, Mucino VH, Mukdadi OM. Three-dimensional modeling and finite element analysis in treatment planning for orthodontic tooth movement. Am J Orthod Dentofacial Orthop. 2011; 139: 59-71.
25. Elias CN, Lima JHC, Valiev R, Meyers MA. Biomedical applications of titanium and its alloys. JOM. 2008; 60: 46-9.
26. Qian J, Wennerberg A, Albrektsson T. Reasons for marginal bone loss around oral implants. Clin Implant Dent Relat Res. 2012; 14: 792- 807.
27. Ming-Lun H, Chih-Ling C. Application of finite element analysis in dentistry, In: Moratal D (ed). Finite Element Analysis. Croatia: InTech; 2010.
28. Hardtmann G, Proeschel P, Ott RW. Masticatory forces and maximum jaw closure forces of complete denture wearers before and after bite opening. Dtsch Zahnarztl Z. 1989; 44: 26-9.
29. Zarb G, Hobkirk J, Eckert S, Jacob R. Prosthodontic treatment for edentulous patients: Complete dentures and implantsupported prostheses. 13th ed. Part 1: the patient. St. Louis, USA: Elsevier Mosby; 2012.
30. Watanabe F, Hata Y, Komatsu S, Ramos TC, Fukuda H. Finite element analysis of the influence of implant inclination, loading position, and load direction on stress distribution. Odontology. 2003; 91: 31-6.
31. Iplikçioğlu H, Akça K, Cehreli MC, Sahin S. Force transmission of one- and two-piece morse-taper oral implants: a nonlinear finite element analysis. Clin Oral Implants Res. 2004; 15: 481-9.
32. Wu AY, Hsu JT, Chee W, Lin YT, Fuh LJ, Huang HL. Biomechanical evaluation of onepiece and two-piece small-diameter dental implants: In-vitro experimental and threedimensional finite element analysis. J Formos Med Assoc. 2006; 115: 794-800.
33. Allum SR, Tomlinson RA, Joshi R. The impact of loads on standard diameter, small diameter and mini implants: A comparative laboratory study. Clin Oral Implants Res. 2008; 19: 553-9.
34. Jackson BJ. Small diameter implants: Specific indications and considerations for the posterior mandible: a case report. J Oral Implantol. 2011; 37: 156-64.
35. Luo X, Ouyang G, Ma X, Jia A, Guo T. The three-dimensional analysis of mandibular overdenture supported by implants. Sheng Wu Yi Xue Gong Cheng Xue Za Zhi. 1998; 15: 167-71.
36. Mechanics of solids I BTME1205. Available at:https://www.slideshare.net/abinashchoudhur y/module-1-mechanics.

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