Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
권호 표지

BLEACHING EFFECT AND SURFACE CHANGE INDUCED BY 3 BLEACHING AGENTS ON THE EXTRINSICALLY STAINED TEETH

표백제에 따른 외인성 착색치아의 표백효과 및 표면변화에 관한 연구

  • Lee, Jae-Yoon (Dept. of Conservative Dentistry, School of Dentistry, Dankook University) ;
  • Shin, Dong-Hoon (Dept. of Conservative Dentistry, School of Dentistry, Dankook University) ;
  • Hong, Chan-Ui (Dept. of Conservative Dentistry, School of Dentistry, Dankook University)
  • 이재윤 (단국대학교 치과대학 치과보존학 교실) ;
  • 신동훈 (단국대학교 치과대학 치과보존학 교실) ;
  • 홍찬의 (단국대학교 치과대학 치과보존학 교실)
  • Published : 1995.09.10
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Abstract

The purpose of this in vitro study was to compare the bleaching effect and the surface change according to three bleaching agents (Rembrandt, Natural White, Hi-Lite). Teeth were stained by artificial food colorants for 6 weeks and bleached for 4 weeks. The teeth were evaluated with spectrophotometer after bleaching on the 1st week and on the 4th week. The surface change of enamel was evaluated under SEM after exposure to 3 agents for 1 and 24 hours. The results were as follows : 1. All groups showed increased Lightness difference after bleaching. 2. After 1 week, only Rembrandt group showed significant bleaching effect compared to control group. 3. After 4 weeks, Rembrandt group and Hi-Lite group showed significant bleaching effect compared to control group. 4. SEM evaluation revealed that enamel surface underwent considerable change after 24 hours. Scratch disappeared and smooth surface was shown.

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