The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
권호 표지

A SCANNING ELECTRON MICROSCOPIC STUDY ON THE LABIAL MARGINAL FIT OF METAL CERAMIC CROWNS MADE BY DIFFERENT TECHNIQUES

도재전장주조관의 제작방법에 따른 순측 치경부 변연 적합도에 관한 주사전자현미경적 연구

  • Yoon, Il-Joong (Department of Prosthodontics, College of Dentistry, Seoul National University) ;
  • Chang, Wan-Shik (Department of Prosthodontics, College of Dentistry, Seoul National University) ;
  • Yang, Jae-Ho (Department of Prosthodontics, College of Dentistry, Seoul National University) ;
  • Lee, Sun-Hyung (Department of Prosthodontics, College of Dentistry, Seoul National University)
  • 윤일중 (서울대학교 치과대학 보철학교실) ;
  • 장완식 (서울대학교 치과대학 보철학교실) ;
  • 양재호 (서울대학교 치과대학 보철학교실) ;
  • 이선형 (서울대학교 치과대학 보철학교실)
  • Published : 1986.12.01
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Abstract

The purpose of this study was to evaluate the marginal fit of metal ceramic crowns made by different techniques. The techniques were metal butt margin technique, platinum foil technique, shoulder powder techniques and wax technique. The latter three techniques were for the fabrication of collarless metal ceramic crowns. Ten crowns were made of each techniques, and marginal fit was evaluated using scanning electron microscope under X200 magnification. The results were as follows. 1. The marginal fit in the descending order were wax technique shoulder powder technique, platinum foil technique and metal butt margin, before cementation, and wax technique, shoulder powder technique, metal butt margin, and platinum foil technique, after cementation. 2. The fit of collarless metal ceramic crowns was comparable to metal ceramic crowns with metal butt margins. 3. There were no statistically significant differences between marginal fit of metal ceramic crowns made by different techniques.

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