대한소아치과학회지 (Journal of the korean academy of Pediatric Dentistry)
- 제33권2호
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- Pages.233-243
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- 2006
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- 1226-8496(pISSN)
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- 2288-3819(eISSN)
C-factor와 충전법이 복합레진의 중합 수축에 의한 치질에서의 수축 응력에 미치는 영향
EFFECT OF C-FACTOR AND LAYERING TECHNIQUE ON THE CONTRACTION FORCE OF COMPOSITE RESIN RESTORATION TO TOOTH SURFACE
- 이봉규 (조선대학교 치과대학 소아치과학교실 구강생물학연구소) ;
- 이난영 (조선대학교 치과대학 소아치과학교실 구강생물학연구소) ;
- 이상호 (조선대학교 치과대학 소아치과학교실 구강생물학연구소)
- Lee, Bong-Kyu (Department of Pediatric Dentistry, College of Dentistry, Oral Biology Research Institute Chosun University) ;
- Lee, Nan-Young (Department of Pediatric Dentistry, College of Dentistry, Oral Biology Research Institute Chosun University) ;
- Lee, Sang-Ho (Department of Pediatric Dentistry, College of Dentistry, Oral Biology Research Institute Chosun University)
- 발행 : 2006.05.31
초록
와동 형성시 C-factor와 충전방법이 복합레진 수복물에서의 수축 응력에 미치는 영향을 평가하고자 발거된 소구치를 대상으로 C-factor가 3.6과 1.0인 와동을 각각 형성한 후 hybrid형 복합레진인
The aim of this study was to investigate the relationship between the C-factor and shrinkage strain values of composite resin and examine the strain values in different incremental filling techniques. Experiment consisted two aims. First, we compared with strain value in two different C-factors(3.7 and 1.0). Second, we examined the strain values in three different filling techniques. The results of the present study can be summarized as follows : 1. High C-factor groups showed higher contraction stress values than low C-factor groups at 900 sec after polymerization. 2. Hybrid resin showed higher contraction stress values than flowable resin in high C-factor cavities. But contraction stress was not revealed significant difference between hybrid resin and flowable resin in low C-factor cavities (P>0.05). 3. Bulk felling with hybrid resin(Group 1) showed high contraction stress and lining with flowable resin followed hybrid resin (Group 5) showed lower contraction stress. 4. Contraction stress were increased during 900 sec after polymerization in high C-factor groups but decreased gradually after 900 sec. 5. Low C-factor groups showed tight marginal seal between resin and cavity wall but high C-factor groups showed gaps formed between resin and cavity wall in part. On the basis above results, layering techniques in high C-factor cavity showed advantages in reducing contraction stress and gap formation between cavity wall and resin restoration.
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