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Collarless도재소부전장금관의 제작방법에 따른 치경부 변연적합도에 관한 실험적 연구
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  • Collarless도재소부전장금관의 제작방법에 따른 치경부 변연적합도에 관한 실험적 연구
저자명
이재혁,Lee. Jae-Hyeuk
간행물명
대한치과보철학회지
권/호정보
1990년|28권 1호|pp.203-216 (14 pages)
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대한치과보철학회
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

The purpose of this study was to evaluate the cervical margin fitness in the collarless metal ceramic crowns formed by different techniques. Specimens were divided as follows : the metal ceramic crowns with metal butt margin as group I, the collarless metal ceramic crowns formed with resin binder technique as group II, and the collarless metal ceramic crowns formed with shoulder powder mixed with phosphate-bonded investment liquids on a refractory die as group III. Each group was made of five specimens, and their marginal fitness on each epoxy die was evaluated under scanning electron microscope of x200 magnification at three measuring points : mesial, central, distal. The following results were obtained. 1. The metal ceramic crowns with metal butt margin exhibited significantly better marginal fitness than the collarless metal ceramic crowns. The marginal fitness in descending order was group I, III, II. 2. The collarless metal ceramic crown formed with resin binder technique had the worst marginal fitness & showed cervical color variation and dermacation between the corrected porcelain & the dentin porcelain. 3. The collarless metal ceramic crowns formed with shoulder powder mixed with phosphate-bonded investment liquids on a refractory die exhibited significantly better marginal fitness & sharper marginal configuration than the other collarless group.