This study was to propose the clear understanding for stress distribution of supporting bone by use of staggered buccal offset tripodal placement of fixtures of posterior 3 crown implant partial dentures. We realized posterior 3 crown implant fixed partial dentures through finite element modeling and analysed stress effect of implant arrangement location to supporting bone under external load using finite element method. Method: To understand stress distribution of 3 crown implant fixed partial dentures which have 2 different arrangement by finite element analysis. In each model, for loading condition, we applied 45° oblique load to occlusal surface of crown and applied 100 N for 3 crown individually(total 300 N) for imitating possible oral loading condition. at this time, we calculated Von Mises stress distribution in supporting bone through finite element method. Result: When apply 45° oblique load to in-line arrangement model, maximum stress result for 100 N for each 3 crown 47.566 . In tripodal placement, result for 1 buccal offset tripodal placement implant model was maximum distributed load 51.418 , so result was higher than in-line arrangement model. Conclusion: In stress distribution result by placement of implant fixture, the most effective structure was in-line arrangement. The tripodal placement does not effective for stress distribution, gap cause more damage to supporting bone.
목차
[Abstract] Ⅰ. 서론 Ⅱ. 실험방법 1. 실험 모델 제작 2. 유한요소분석 Ⅲ. 실험결과 1. 일렬 배열 고정성 국소의치 모델 2. 1mm 간격 협측 삼각배열 국소의치 모델 Ⅳ. 고찰 Ⅴ. 결론 참고문헌