지르코니아 단일구조 전부도재관의 지대치 형태에 따른 파절 강도
Fracture Strength Analysis of Monolithic Zirconia Ceramic by Abutment Shape
김원영, 홍민호,
소속 상세정보
김원영 ( Kim Won-young ) - 부산가톨릭대학교 보건과학대학 치기공학과
홍민호 ( Hong Min-ho ) - 부산가톨릭대학교 보건과학대학 치기공학과
KMID : 0362120140360040000
Abstract
Purpose: This study was performed fracture strength test by conducted change of abutment and coping shape for suggesting monolithic all ceramic crown which has thin thickness and superior strength of the occlusal surface.
Methods: The specimens on the four kinds abutment was made according to thickness of occlusal surface and angle of axis surface. And All ceramic coping specimens of 6 different kinds was made by the CAD/CAM Method. Compression strength test using the UTM and the verification of compression-stress situation using the 3D finite element method were conducted under optimum conditions.
Results: 516C specimen was showed the strongest compression-fracture strength, followed by 516FR, 516F45, specimens. Did not show significant differences between 516FR and 516F45. 516C of the universal testing machine the specimen’s surface that are within the vertical load is small, finite element method of a uniformly distributed load, so the value received suggests otherwise.
Conclusion: In conclusion, abutments of monolithic ziconia ceramic when having a same thickness of the occlusal, as the angle of occlusal edge is small, the stress is well dispersed and it can endure well in the fracture.
키워드
shape of abutment; monolithic zirconia; all ceramic; FEM
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