The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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THE COLOR STABILITY OF PORCELAIN REPAIR COMPOSITE RESINS

도재 수복용 복합레진의 색 안정성에 관한 연구

  • Shin Mee-Ran (Department of Prosthodontics, School of Dentistry, Wonkwang University) ;
  • Cho Hye-Won (Department of Prosthodontics, School of Dentistry, Wonkwang University) ;
  • Jin Tai-Ho (Department of Prosthodontics, School of Dentistry, Wonkwang University)
  • 신미란 (원광대학교 치과대학 보철학교실) ;
  • 조혜원 (원광대학교 치과대학 보철학교실) ;
  • 진태호 (원광대학교 치과대학 보철학교실)
  • Published : 1991.12.01
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Abstract

The purpose of this study was to investigate the color stability of 3 porcelain repair composite resins Twenty specimens of each composite resin were made and ten specimens were polished at 10 minutes after polymerization, and the others were polished at 48 hours after polymerization. For 60 days, the color characteristics were measured by fiber-optic colorimeter (Model Tc-6FX, Tokyo Denshoku Co.). The obtained results were as follows: 1. The changes of $a^*$ value and $b^*$ value in composite resin polished at 10min. after polymerization were greater than those of composite resins polished at 48 hrs. after polymerization. 2. The $a^*$ values of all composite resins were increased and the $b^*$ values were decreased. 3. The $L^*$ values were decreased in composite resin manufactured by K & B Co., which were polished at 10min. after polymerization, but increased in composite resin manufactured by K & M Co., polished at 48 hrs. after polymerization.

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