INFLUENCE OF OCCLUSAL LOADING LOCATION ON THE STRAIN DEVELOPED AROUND IMPLANTS WITH TWO DIFFERENT CREST MODULE DESIGNS (IN VITRO STUDY)

Document Type : Original Article

Authors

1 Instructor at Fixed Prosthodontics Department, Faculty of Dentistry, Pharos University in Alexandria, Egypt

2 Professor of Fixed Prosthodontics, Department of Conservative Dentistry, Faculty of Dentistry, Alexandria University, Egypt

3 Associate Professor of Dental Biomaterials, Department of Dental Biomaterials, Faculty of Dentistry, Ain Shams University, Egypt.

4 Lecturer of Fixed Prosthodontics, Department of Conservative Dentistry, Faculty of Dentistry, Alexandria University, Egypt.

Abstract

INTRODUCTION: Mechanical overload is thought to be one of the major causes of implant complications. The addition of micro threads increase linear length of coronal implant surface available for biologic width and allows some stress transfer and relieve the crestal stress and strain concentration in the coronal region. OBJECTIVES: Was to compare the influence of occlusal loading location on the strain developed around implants with two different crest module designs. MATERIALS AND METHODS: Ten Polyurethane test blocks in which implants were fixed at the maxillary left first premolar area. Specimens were divided into two parallel groups (n=5), Group (I) -implants, with micro threads, Group (II) implants with wide-groove threads. Strain gauges were connected to a strain meter to record the developed strain. A universal testing machine was used for load application up to 100 N. The data were statistically analyzed (p≤0.05). RESULTS: Group I exhibited the lower mean micro-strain values (260.0 ± 192.6 µε) than Group II (513.2 ± 108.2 µε).There was statistically significant difference between both groups(p > 0.05). CONCLUSIONS: Crest module designs affected the stress pattern induced around dental implants

Keywords

References

  1. Branemark PI, Zarb GA, Albrektsson T. Tissueintegrated prostheses: osseointegration in clinical dentistry. Chicago: Quintessence Pub; 1985: 11-76.
  2. Sousa T, Lelis V, Santos V, Nishioka G, Asconcellos L, Nishioka R. Strain Gauge analysis of non-axial loads in three-element implant supported prostheses. Braz Dent Sci. 2013; 16: 24-30.
  3. Adell R, Lekholm U, Rockler B, Branemark PI. A 15- year study of osseointegrated implants in the treatment of the edentulous jaw. Int J Oral Surg. 1981;10:387- 416.
  4. Albrektsson T, Zarb G. The long-term efficiency of currently used dental implants: A review and proposed criteria of success. Int J Oral Maxillofac Implants. 1986;1:11-25.
  5. Oh TJ, Yoon J, Misch CE, Wang HL. The causes of early implant bone loss: Myth or science? J Periodontol. 2002;73:322-33.
  6. Misch CE. Dental Evaluation: Factors of Stress. 2nd ed. St. Louis: CV Mosby; 1999: 122-3.
  7. Jung YC, Han CH, Lee KW. A 1-year radiographic evaluation of marginal bone around dental implants. Int J Oral Maxillofac Implants. 1996;11:811-8.
  8. Guo E. Mechanical Properties of Cortical Bone and Cancellous Bone Tissue. 2nd ed. Boca Raton, FL: CRC Press; 2001:1-23.
  9. Jovanovic SA. Diagnosis and treatment of peri implant complications. In: Newman MG, Takei HH, Carranza FA (eds). Carranza’s Clinical Periodontology. 9th ed. Philadelphia: WB Saunders; 2003. pp 931-42.
  10. Pilliar RM, Deporter DA, Watson PA, Valiquette N. Dental implant design-effect on bone remodeling. J Biomed Mater Res. 1991;25:467-83.
  11. Ostman P, Hellman M, Albrektsson T, Sennerby L. Direct loading of Nobel Direct® and NobelPerfect® one-piece implants: A 1-year prospective clinical & radiographic study. Clin Oral Implant Res. 2007;18:409-18.
  12. Hansson S. The implant neck: Smooth or provided with retention elements. A biomechanical approach. Clin Oral Implants Res. 1999;10:394-405.
  13. Ketabi M, Pilliar R, Deporter D. Factors driving periimplant crestal bone loss – literature review and discussion: Part 3. JIACD. 2010;1:66-7.
  14. Baumgarten H, Cocchetto R, Testori T, Meltzer A, Porter S. A new implant design for crestal bone preservation: Initial observations and case report. Pract Proced Aesthet Dent. 2005;17:735-40.
  15. Assif D, Marshak B, Horowitz A. Analysis of load transfer and stress distribuition by an implantsupported fixed partial denture. J Prosthet Dent. 1996;75:285-91.
  16. Clelland NL, Gilat A, McGlumphy EA, Brantley WA. A photoelastic and strain gauge analysis of angled abutments for an implant system. Int J Oral Maxillofac Implants. 1993;8:541-8.
  17. Cehreli M, Duyck J, De Cooman M, Puers R, Naert I. Implant design and interface force transfer. A photoelastic and strain-gauge analysis. Clin Oral Implants Res. 2004;15:249-57.
  18. Duyck J, Ronold HJ, Van Oosterwyck H, Naert I, Vander Sloten J, Ellingsen JE. The influence of static and dynamic loading on marginal bone reactions around osseointegrated implants: an animal experimental study. Clin Oral Implants Res. 2001;12:207-18.
  19. Isidor F. Loss of osseointegration caused by occlusal load of oral implants. A clinical and radiographic study in monkeys. Clin Oral Implants Res. 1996;7:143-52.
  20. Huang H-L, Chang Y-Y, Lin D-J, Li Y-F, Chen K-T, Hsu J-T. Initial stability and bone strain evaluation of the immediately loaded dental implant: an in vitro model study. Clin Oral Implants Res. 2011;22:691–8.
  21. Kirkpatrick LA, Feeney BC. A simple guide to IBM SPSS statistics for version 20.0. Student ed. Belmont, Calif.: Wadsworth, Cengage Learning; 2013.
  22. Vogel RC. Implant overdentures: a new standard care edentulous patients current concepts technique. Compend Contin Educ Dent. 2008;29:270-6.
  23. Persson AS, Andersson M, Odén A, SandborghEnglund G. Computer aided analysis of digitized dental stone replicas by dental CAD/CAM technology. Dent Mater. 2008;24:1123-30. 
  24. Williams KR, Watson CJ, Murphy WM, Scott J, Gregory M, Sinobad D. Finite element analysis of fixed prostheses attached to osseointegrated implants. Quintessence Int. 1990;21:563-70.
  25. Karl M, Rosch S, Graef F, Taylor T, Heckmann SM. Static implant loading caused by as-cast metal and ceramic-veneered superstructures. J Prosthet Dent. 2004;91:319-25.
  26. Schrotenboer J, Tsao YP, Kinariwala V, Wang HL. Effect of microthreads and platform switching on crestal bone stress levels: A finite element analysis. J Periodontol. 2008;79:2166-72.
  27. Lin C-L, Kuo Y-C, Lin A-S. Effects of dental implant length and bone quality on biomechanical responses in bone around implants: a 3-d non-linear finite element analysis. Biomed Eng-App Bas C. 2005;17:44-9.
  28. Iplikçioğlu H, Akça K, Cehreli MC, Sahin S. Comparison of non-linear finite element stress analysis with in vitro strain gauge measurements on a morse taper implant. Int J Oral Maxillofac Implants. 2003;18:258-65.
  29. Nagasawa S, Hayano K, Niino T, Yamakura K, Yoshida T, Mizoguchi T, et al. Nonlinear stress analysis of titanium implants by finite element method. Dent Mater J. 2008;27:633–9.
  30. Pesqueira AA, Goiato MC, Filho HG, Monteiro DR, Santos DM, Haddad MF, et al. Use of stress analysis methods to evaluate the biomechanics of oral rehabilitation with implants. J Oral Implantol. 2014;40:217-28.
  31. Abreu CW, Nishioka RS, Balducci I, Consani RL. Straight and offset implant placement under axial and nonaxial loads in implant-supported prostheses: strain gauge analysis. J Prosthodont. 2012;21:535-9.
  32. Kang Y-I, Lee D-W, Park K-H, Moon I-S. Effect of thread size on the implant neck area: preliminary results at 1 year of function. Clin Oral Implants Res. 2012;23:1147–51.
  33. Ozkir SE, Terzioglu H. Macro design effects on stress distribution around implants: A photoelastic stress analysis. Indian J Dent Res. 2012;23:603-7.
  34. Culhaoglu A, Ozkir SE, Celik G, Terzioglu H. Comparison of two different restoration materials and two different implant designs of implant-supported fixed cantilevered prostheses: A 3D finite element analysis. Eur J Gen Dent. 2013;2:114-50.
  35. Schrotenboer J, Tsao YP, Kinariwala V, Wang HL. Effect of microthreads and platform switching on crestal bone stress levels: A finite element analysis. J Periodontol. 2008;79:2166-72.
Alexandria Dental Journal
Volume 43, Issue 3
December 2018
Pages 16-21

Files

Share

How to cite

Statistics