The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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A STUDY ON THE COLOR STABILITY OF PORCELAIN FOR PORCELAIN FUSED TO METAL CROWN

도재전장주조관에 사용되는 도재의 색안정성에 관한 연구

  • Ryu, So-Young (Department of Prosthodontics, College of Dentistry, Dankook University) ;
  • Lim, Ju-Hwan (Department of Prosthodontics, College of Dentistry, Dankook University) ;
  • Cho, In-Ho (Department of Prosthodontics, College of Dentistry, Dankook University)
  • 류소영 (단국대학교 치과대학 치과보철학교실) ;
  • 임주환 (단국대학교 치과대학 치과보철학교실) ;
  • 조인호 (단국대학교 치과대학 치과보철학교실)
  • Published : 2000.02.01
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Abstract

Dental porcelain should have adequate strength and similar esthetics as natural teeth. Recently esthetics has become a high priority in clinical dentistry. Thus the evaluation of color stability of dental porcelain has become an important part in dental research. The purpose of this study was to evaluate the difference in color stability of 3 types of porcelain(Vintage, VMK 95, CERAMCO II). The porcelain were divided into groups by 2 types of treatment(glazing or non-glazing and thermocycling or non-thermocycling). The porcelain were dyed with methylene blue and distilled water, and then the color stability was evaluated with a spectrophotometer The results were as follows; 1. The color change of porcelain increased in the order of VMK 95, Vintage, CERAMCO II. But there was no significant difference. 2. The color change decreased in the glazing group compared to the non-glazing group(p<0.05). 3. The color change increased after thermocycling But there was no significant difference. 4. The color change according to dye method was significantly larger with methylene blue copared to distilled water(p<0.05).

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