Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
권호 표지

A STUDY ON FLEXURAL STRENGTH OF COMPOSITE RESIN INLAY ACCORDING TO HEAT TREATMENT

열처리에 따른 복합레진 인레이의 굴곡강도에 관한 연구

  • Kim, Yong-Seong (Department of Conservative Dentistry, College of Dentistry, Kyung Hee University) ;
  • Min, Byung-Soon (Department of Conservative Dentistry, College of Dentistry, Kyung Hee University) ;
  • Choi, Ho-Young (Department of Conservative Dentistry, College of Dentistry, Kyung Hee University) ;
  • Park, Sang-Jin (Department of Conservative Dentistry, College of Dentistry, Kyung Hee University) ;
  • Choi, Gi-Woon (Department of Conservative Dentistry, College of Dentistry, Kyung Hee University)
  • 김용성 (경희대학교 치과대학 보존학교실) ;
  • 민병순 (경희대학교 치과대학 보존학교실) ;
  • 최호영 (경희대학교 치과대학 보존학교실) ;
  • 박상진 (경희대학교 치과대학 보존학교실) ;
  • 최기운 (경희대학교 치과대학 보존학교실)
  • Published : 1993.04.25
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Abstract

The purpose of this study was to evaluate flexure strength of composite resin inlay according to heat treatment and duration in comparasion with visible light-cured resin. In this study, materials were used 1 visible light-cured resin and 3 kinds of composite resin inlays. Control group was visible light cured resin (Photo Clearfil Posterior) and experimental groups were composite resin inlays (Brilliant Dentin, Brilliant Enamel and Clearfil CR Inlay). Experimental groups were divided 3 groups: First group was Brilliant Dentin and second group was Brilliant Enamel and -third group was Clearfil CR Inlay. Used experimental groups were calculated flexural strength according to heat treatment and duration. The following results were obtained: 1. Experimental groups were higher flexural strength than control group. 2. At $100^{\circ}C$ when heat treatment carried out 7 minutes flexural strength elevated third group, second group, first group in turn and when heat treatment carried out 15 minutes flexural strength elevated third group, second group, first group in turn but no difference was showed between first and second group. 3. At $125^{\circ}C$ when heat treatment was carried out 7 minutes flexural strength elevated third group, second group, first group in turn and when heat treatment was carried out 15 minutes flexural strength elevated third group, first group, second group in turn but no difference was showed between first and second group. 4. In spite of heat treatment and duration the third group was highest flexural strength in the others groups.

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