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Evaluation of design parameters of osseointegrated dental implants using finite element analysis
Author(s) -
Chun H.J.,
Cheong S.Y.,
Han J.H.,
Heo S.J.,
Chung J.P.,
Rhyu I.C.,
Choi Y.C.,
Baik H.K.,
Ku Y.,
Kim M.H.
Publication year - 2002
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1046/j.1365-2842.2002.00891.x
Subject(s) - thread (computing) , finite element method , screw thread , osseointegration , implant , materials science , dental implant , dentistry , orthodontics , structural engineering , surgery , engineering , medicine , mechanical engineering
Finite element analyses were performed for various shapes of dental implant to study effects on stress distribution generated in the surrounding jaw bone and to determine an optimal thread shape for even stress distribution. It was found that the square thread shape filleted with a small radius was more effective on stress distribution than other dental implants used in the analyses. Additional analyses were performed on the implant with the thread shape obtained from previous analyses for varying other design parameters, such as the width of thread end and height of thread for various load directions, to determine the optimal dimensions of the implant. Stress distribution was more effective in the case when the width of thread end and the height of thread were 0·5 p and 0·46 p , respectively, where p is the screw pitch. Then, using the optimal implant thread dimensions determined previously, stress analyses were performed with various screw pitches and implant lengths, to investigate effects on stress distribution and to find the way to reduce the maximum effective stress generated in the jaw bone. Results show that the maximum effective stress decreased not only as screw pitch decreased gradually but also as implant length increased.