유한요소 분석을 이용한 하중 위치에 따른 구치부 임플란트 국소의치 지지골의 응력 분포 연구
Finite element analysis of stress distribution on supporting bone of posterior implant partial dentures by loading location
손성식, 김영직, 이명곤,
소속 상세정보
손성식 ( Son Sung-Sik ) - 인제치과기공소
김영직 ( Kim Young-Jick ) - 부산가톨릭대학교 치기공과
이명곤 ( Lee Myung-Kon ) - 부산가톨릭대학교 보건과학대학 치기공학과
KMID : 0362120070290010093
Abstract
The purpose of this study is to evaluate the effect of three different oblique mechanical loading to occlusal surfaces of posterior implant partial dentures on the stress distributions in surrounding bone, using 3-dimensional finite element method. A 3-dimensional finite element model of a posterior implant partial dentures composed of three unit implants, simplified 3 gold alloy crown and supporting bone was developed according to the design of AVANA self tapping implant for this study. Three kinds of surface distributed oblique loads(300 N) are applied to following occlusal surfaces in the three crowns; 1) All occlusal surfaces in the three crown(load of 300 N was shared to three crown), 2) Occlusal surface of centered crown (load of 300 N was applied to a centered crown), 3) Occlusal surface of proximal crown(load of 300 N was applied to a distal proximal crown). In the results, 141 MPa of maximum von Mises stress was calculated at third loading condition and 98 MPa of minimum von Mises stress was calculated at first loading condition. From the results, location and type of occlusive loading conditions are important for the safety of supporting bone.
키워드
finite element analysis;implant;supporting bone
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