전부도재교의치의 코어재료에 따른 파절강도 관찰
Observation of Fracture Strengths According to the Core Materials for All Ceramic Bridge
정인성, 김치영,
소속 상세정보
정인성 ( Chung In-Sung ) - 부산가톨릭대학교 보건과학대학 치기공학과
김치영 ( Kim Chi-Young ) - 부산가톨릭대학교 보건과학대학 치기공학과
KMID : 0362120100320040359
Abstract
Purpose: The purpose of this study was to evaluate the fracture strength between the core and veneering ceramic according to 2 core materials, In-Ceram Alumina and In-Ceram Zirconia, fabricated by electro ceramic layering technique. 2 different fixed partial denture cores of three units were veneered by veneering ceramic(Ceranion, Noritake) (n=10).
Methods: The fracture strengths between the core and veneering ceramic were measured through the 3 point bending test. The interfaces between the core and veneering ceramic were observed with the X-ray dot mapping of EPMA.
Results: The result of fracture strength was observed that IZP group, In-Ceram Zirconia core, had higher fracture strength. IPA group, In-Ceram Alumina core, had fracture strength of 359.9( 86.2) N. IZP group, In-Ceram Zirconia core, had fracture strength of 823.2( 243.0) N. X-ray dot mapping observation showed that a major element in the core and veneering ceramic of IPA group was alumina and silica, respectively. No binder was observed in interfaces between the core and veneering ceramic, and no ion diffusion or transition was observed between the core and veneering ceramic. However, apparent ion diffusion or transition was observed between the core and veneering ceramic of IZP group.
Conclusion: Therefore, IZP group was evaluated to have the excellent mechanical property.
키워드
All Ceramic;3 Point Bending Strength;In-Ceram;Fracture Strength
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