Restorative Dentistry and Endodontics
- Volume 19 Issue 2
- /
- Pages.641-654
- /
- 1994
- /
- 2234-7658(pISSN)
- /
- 2234-7666(eISSN)
ADAPTATION OF COMPOSITE RESIN TO DENTINAL WALL USING DENTIN BONDING AGENTS
수종 상아질 접착제의 상아질과의 접합양상에 관한 주사 전자현미경적 연구
- Oh, Won-Mann (Dept. of Conservative Dentistry, Chonnam National University) ;
- Yang, Kyu-Ho (Dept. of Pedodontics, College of Dentistry, Chonnam National University) ;
- Okuda, Reiichi (Dept. of Operative Dentistry, School of Dentistry, Tohoku University) ;
- Sasazaki, Hiromi (Dept. of Operative Dentistry, School of Dentistry, Tohoku University) ;
- Komatsu, Masashi (Dept. of Operative Dentistry, School of Dentistry, Tohoku University)
- 오원만 (전남대학교 치과대학 보존학교실) ;
- 양규호 (전남대학교 치과대학 소아치과학교실) ;
- 레치 오쿠다 (동북대학교 치학부보존학제2강좌) ;
- 히로미 사사자키 (동북대학교 치학부보존학제2강좌) ;
- 마사 코마츠 (동북대학교 치학부보존학제2강좌)
- Published : 1994.09.10
Abstract
This study was executed to evaluate adaptability of dentin bonding agents to dentinal wall with measuring contraction gap on interface between cavity wall and composite resin by SEM study. 6 kinds of dentin bonding agents were investigated for this study : Gluma, Super Bond C & B, All bond 2, Scotchbond multipurpose, Scotchbond 2 and Clearfil photo bond. 30 of fresh extracted teeth were randomly selected and divided into 6 groups with each 5. The round shaped cavities with 3mm dia. and 1.5mm depth were prepared on cementoenamel junction of buccal surface of teeth. Dentin bonding agents were applied to cavity wall and then the composite resin was filled in the cavity. Specimens were sectioned longitudinally on buccal surface. Sectioned aspects of specimens were impressioned with rubber base materials and finally precise replica were made of epoxy resin poured in negative impression. Contraction gaps were examined on interface between cavity wall and composite resin under condition of 200 and 2000 magnification of SEM. The results were as follows. 1. There were no gap on interface between enamel and composite resin in all specimens, but gaps were mainly exhibited on apical side of lateral wall of dentin of cavity. 2. In Gluma, 2 cases of 5 specimens exhibited excellent adaptation to the cavity wall, indicating no gaps on interface between cavity wall and composite resin. The other specimens showed gaps with range of
Keywords