The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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A STUDY ON MARGINAL FIDELITY OF CERAMIC METAL COPINGS TREATED BY VARIOUS METHODS

도재용 금속 코핑의 처리 방법에 따른 변연 적합도에 관한 연구

  • Koo, Bum-Mo (Dept. of Prosthodontics, School of Dentistry, Dankook University) ;
  • Lim, Ju-Hwan (Dept. of Prosthodontics, School of Dentistry, Dankook University) ;
  • Cho, In-Ho (Dept. of Prosthodontics, School of Dentistry, Dankook University)
  • 구범모 (단국대학교 치과대학 보철학 교실) ;
  • 임주환 (단국대학교 치과대학 보철학 교실) ;
  • 조인호 (단국대학교 치과대학 보철학 교실)
  • Published : 1997.07.01
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Abstract

The effect of thermocycling and surface finishing on the marginal fidelity of copings for a metal ceramic crown was examined. Methods for minimizing the loss of marginal fidelity were evaluated. The results were as follows ; 1. Thermocycling of ceramic metal copings resulted in increased marginal gap. 2. The greatest marginal gap occurred during the first thermocycling of the copings. 3. No additional distortion of marginal fidelity occurred when surface finishing and second thermocycling were completed after initial thermocycling. 4. The gap increases according to various treatment methods showed group 1 to be the highest values. 5. There was no significant difference between group 2 and group 3(p>0.05) 6. There was significant difference between group 1 and group 2, 3(p<0.05). 7. There was no significant difference among the measurement sites.

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