Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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MORPHOLOGICAL PATTERNS OF SELF-ETCHING PRIMERS AND SELF-ETCHING ADHESIVE BONDED TO TOOTH STRUCTURE

치질에 접착된 자가 산부식 프라이머와 자가 산부식 접착제의 형태학적 양상

  • Cho, Young-Gon (Department of Conservative Dentistry, College of dentistry, Chosun University) ;
  • Lee, Seok-Jong (Department of Conservative Dentistry, College of dentistry, Chosun University) ;
  • Jeong, Jin-Ho (Department of Conservative Dentistry, College of dentistry, Chosun University) ;
  • Lee, Young-Gon (Department of Conservative Dentistry, College of dentistry, Chosun University) ;
  • Kim, Soo-Mee (Department of Conservative Dentistry, College of dentistry, Chosun University)
  • 조영곤 (조선대학교 치과대학 보존학교실) ;
  • 이석종 (조선대학교 치과대학 보존학교실) ;
  • 정진호 (조선대학교 치과대학 보존학교실) ;
  • 이영곤 (조선대학교 치과대학 보존학교실) ;
  • 김수미 (조선대학교 치과대학 보존학교실)
  • Published : 2003.01.01
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Abstract

The purpose of this study was to compare in vitro interfacial relationship of restorations bonded with three self-etching primer adhesives and one self-etching adhesive. Class I cavity preparations were prepared on twenty extracted human molars. Prepared teeth were divided into four groups and restored with four adhesives and composites Clearfil SE $Bond/Clearfil^{TM}$ AP-X (SE), UniFil $Bond/UniFil^{\circledR}$ F (UF), FL $Bond/Filtek^{TM}$ Z 250 (FL) and Prompt $L-Pop/Filtek^{TM}$ Z 250 (LP) After storing in distilled water of room temperature for 24 hours, the specimens were vertically sectioned and decalcified. Morphological patterns between the enamel/dentin and adhesives were observed under SEM. The results of this study were as follows : 1. They showed close adaptation between enamel and SE, UF and FL except for LP. 2. The hybrid layer in dentin was $2{\;}\mu\textrm{m}$ thick in SE, $1.5{\;}\mu\textrm{m}$ thick in UF, and $0.4{\;}\mu\textrm{m}$ in both FL and LP. So, the hybrid layers of SE and UF were slightly thicker than that of FL and LP. 3. The lengths and diameters of resin tags in UF and FL were similar, but those of LP were slightly shorter and slenderer than those of SE. 4. The resin tags were long rod shape in SE, and funnel shape in other groups Within the limitations of this study, it was concluded that self-etching primer adhesives showed close adaptation on enamel. In addition, the thickness of hybrid layer ranged from $0.4-1.5{\;}\mu\textrm{m}$ between adhesives and dentin. The resin tags were long rod or funnel shape, and dimension of them was similar or different among adhesives.

Keywords

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