Fogorvosi szemle, 2006 (99. évfolyam, 1-6. szám)

2006-08-01 / 4. szám

147

FOGORVOSI SZEMLE ■ 99. évf. 4. sz. 2006.

22. Joos U, Vollmer D, Kleinheinz J: Einfluss der Implantatgeometrie auf die Strainverteilung im periimplantären Knochen. Mund Kiefer GesichtsChir2000; 4: 143-147.

23. Cruz M, Wassall T, Toledo EM, Barra LP, Lemonge AC: Threedimensional finite element stress analysis of a cuneiform-geometry implant. IntJ Oral Maxillofac Implant 2003; 19 (5): 675-684.

24. Petrie CS, Williams JL: Comparative evaluation of implant designs: influence of diameter, length, and taper on strains in the alveolar crest. A three-dimensional finite-element analysis. Clin Oral Impl Res 2005; 16: 486-494.

25. Chun HJ és mtsai: Evaluation of design parameters of osseointegrated dental implants using finite element analysis. J Oral Rehabil 2002; 29 (6): 565-574.

26. Hanson S, Werke M: The implant thread as a retention element in cortical bone: the effect of thread size and thread profile: a finite element study. J Biomech 2003; 36: 1247-1258.

27. Lum LB: A biomechanical rationale for the use of short implants. J Oral Implantai 1991 ; 17 (2): 126-131.

28. Lum LB, Osier JF: Load transfer from endosteal implants to supporting bone: an analysis using statics. Part one: Horizontal loading. J Oral Implantai 1992; 19 (4): 343-348.

29. Lum LB, Osier JF: Load transfer from endosteal implants to supporting bone: an analysis using statics. Part two: Axial loading. J Oral Implantai 1992; 19 (4): 349-353.

30. Iplikcioglu H, Akca K: Comparative evaluation of effect of diameter, length, and number of supporting three-unit fixed partial prostheses on stress distribution in the bone. J Dent 2002; Jan 30 (1): 41—46.

31. Himmlová L, Dostálová T, Kácovsky A, Konviőková S: Influence of implant length and diameter on stress distribution: A finite element analysis. J Prosthet Dent 2004; 91: 20-25.

32. Bozkaya D, Muftu S, Muftu A: Evaluation of load transfer characteristics of five different implants in compact bone at different load levels by finite element analysis. J Prosthet Dent 2004; Dec 92 (6): 523-30.

33. Pierrisnard L, Renouard F, Renault P, Barquins M: Influence of implant length and bicortical anchorage on implant stress distribution. Clin Implant Dent Retat Res 2003; 5 (4): 254-62.

34. Barbier L, Schepers E: Adaptive bone remodeling around oral implants under axial and non-axial loading conditions in the dog mandible. Int J Oral Maxillofac Implants 1997; 12: 215-223.

35. Barbier L, Vander Sloten J, Krzeinski G, Shepers E, Van der Perre G: Finite element analysis of non-axial loading of oral implants in the mandible of the dog. J Oral Rehabil 1998; 25: 847-858.

Dr. Szűcs A, Dr. Divinyi T, Dr. Lőrincz Á

A Biomechanical Study of the Mechanical Stress Transmission of Dental Implants Using Finite Element Analysis

Review of Literature Part I.

Finite Element Analysis (FEA) is a computerised investigative method that is capable of determining the mechanical stress arising in various objects and their environment as a result of forces effecting the system by using a mathematical model. The method is most often used for purposes of technical, engineering design, but is very useful for medical purposes-the static and functional investigation of the skeletal and motor system of the human body-as well. The transmission of mechanical stress between the implant and bone depends on a number of factors, and its description is quite complicated. A model has to be created to perform a FEA, the geometric data of the implant, the mechanical properties of the bone and the parameters of the bone-implant interface have to be determined, a so-called finite element network has to be created. Valuable data can be obtained by changing the individual elements of the system. The study of dental implants makes it possible to better investigate biomechanical conditions and thus the further perfection of implant methods. In the first part of the present two-part publication authors review the possibilities of use of the finite element analysis in examining the stress transmission of dental implants. In the second part of the publication their own studies will be presented.

Key words: dental implants, finite element analysis, mechanical stress