심미도재관의 파절 강도 비교 연구
A comparative study on the fracture strength of esthetic porcelain crowns
김은하, 이명곤,
소속 상세정보
김은하 ( Kim Eun-Ha ) - 이지치과기공소
이명곤 ( Lee Myung-Kon ) - 부산가톨릭대학교 보건과학대학 치기공학과
KMID : 0362120070290020079
Abstract
In this study, We tried to find out the fracture strength of zirconia coping all ceramic crown and
collarless porcelain fused gold alloy crown as the compared group. Each of the collarless porcelain fused gold crown and zirconia all ceramic crown has been produced specimen 10 each. And after pasting them on the steel jig, it had load given at porcelain incisal edge by 130 and measured fracture strength by Universal Testing Machine and then We have results from that.
1. The average value of fracture strength suggested 950.49 N at collarless porcelain fused gold alloy crown, 656.81 N at zirconia coping all ceramic crown.
2. Fractured pattern showed that the whole of labial part was exposed in collarless porcelain
fused gold crown, but porcelain of margin part did not show fracture in advance. In the practice, the concern that collarless might cause fracture strength to be weaken does not matter, we concluded zirconia all ceramic crown made fracture that only a part of labial porcelain was fractured. The combination of zirconia all ceramic crown and turned out to be excellent.
키워드
Porcelain fused gold crown;Zirconia all ceramic crown;Fracture strength.
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