Restorative Dentistry and Endodontics

  • 제28권3호
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  • Pages.209-221
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  • 2003
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  • 2234-7658(pISSN)
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  • 2234-7666(eISSN)
대한치과보존학회 (The Korean Academy of Conservative Dentistry)
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상아질에 대한 저점도 복합레진의 자가접착에 관한 연구

SELF-ADHESION OF LOW-VISCOSITY COMPOSITES TO DENTIN SURFACE

  • 조태희 (경희대학교 대학원 치의학과 치과보존학) ;
  • 최경규 (경희대학교 대학원 치의학과 치과보존학) ;
  • 박상혁 (경희대학교 대학원 치의학과 치과보존학) ;
  • 박상진 (경희대학교 대학원 치의학과 치과보존학)
  • Cho, Tae-Hee (Department of Conservative Dentistry, Graduate School Kyung-Hee University) ;
  • Choi, Kyoung-Kyu (Department of Conservative Dentistry, Graduate School Kyung-Hee University) ;
  • Park, Sang-Hyuk (Department of Conservative Dentistry, Graduate School Kyung-Hee University) ;
  • Park, Sang-Jin (Department of Conservative Dentistry, Graduate School Kyung-Hee University)
  • 발행 : 2003.05.01
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초록

The objectiveness of this study was to evaluate whether low-viscosity composite can bond effectively to dentin surface without bonding resin. The low-viscosity composites being 50wt% filler content were made by the inclusion of bonding resin of two self-etching systems(Cleafil SE Bond, Unifil Bond) varied with contents as 0, 10, 20, 30, 40, 50wt%. Exposed dentin surfaces of extracted 3rd molars are used. Dentin bond strengths were measured. The tests were carried out with a micro-shear device placed testing machine at a CHS of 1mm/min after a low-viscosity composite was filled into an iris cut from micro tygon tubing with internal diameter approximately 0.8mm and height of 1.0mm. 1 Flexural strength and modulus was increased with the addition of bonding resin. 2. Micro-shear bond strength to dentin was improved according to content of bonding resin irrespective of applying or not bonding resin in bonding procedure, and that of Clearfil SE Bond groups was higher than Unifil Bond. 3. There were no significant difference whether use of each bonding resin in bonding procedure for S-40, S-50, U-50(p＞0.05). 4. In SEM examination, resin was well infiltrated into dentin after primed with self-etching primer only for S-50 and U-50 in spite of the formation of thinner hybrid layer. Low viscosity composite including some functional monomer may be used as dentin bonding resin without an intermediary bonding agent. It makes a simplified bonding procedure and foresees the possibility of self-adhesive restorative material.

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