복합레진의 중합 수축력과 수복물의 결합양상에 관한 연구 제 1 편 : 중합수축력 = STUDIES ON THE POLYMERIZATION CONTRACTION FORCES AND THE BONDING BEHAVIOR OF COMPOSITE RESINS PART 1. POLYMERIZATION CONTRACTION FORCES

다국어 초록 (Multilingual Abstract)

The polymerization contraction forces has a relationship with the contents of filler, and if forces surpass the bond strength between restoration and bonded surface, the failure of bond can be occured. This study was designed to evaluate the effects of filler contents on the polymerization contraction forces and to confirm whether the polymerization forces could induce the bond failure of composite resins to enamel or dentin. Low capacity load cell using strain gauge were prepared and used as a measurement system for polymerization contraction forces. Oxidized alloy surfaces, enamel surfaces and dentin surfaces were used as bonded surface. Measurements of the polymerization contraction forces were done for 1 hour, and a stress at 1 hour after was recorded as a polymerization contraction force. It was considered as a bond failure that the polymerization contraction forces increased and then decreased by the time.
The following conclusions were drawn :
1. Polymerization contraction forces of composite resins were decreased by the increase of filler contents.
2. Polymerization contraction forces were increased at thickened resin specimens, but it was not significant at over two millimeter thickness.
3. Bond strength of composite resins to the acid etched enamel surfaces exceeded the polymerization contraction forces and the reduced polymerization contraction forces due to the bond failure were not confirmed.
4. Failure of bond and reduced polymerization contraction forces occured on dentin.

목차 (Table of Contents)

• Ⅰ. 서 론
• Ⅱ. 실험재료 및 방법
• Ⅲ. 실험성적
• Ⅳ. 총괄 및 고안
• Ⅴ. 결 론
• 참고 문헌
• 영문 초록