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J Korean Dent Assoc. 1973;11(5):337-340. Published online May 31, 1973.
- 수종충전재의 변연누출에 관한 실험적 연구
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이윤상1, 김홍석2, 박가명3
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1서울대학교 치과대학 보존학교실
2서울대학교 치과대학 보존학교실
3서울대학교 치과대학 보존학교실 -
- A Study of Marginal Leakage on Various Filling Materials
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Yoon-Sang Lee1, Hong-Suk Kim2, Ka-Myung Park3
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1Dept. of Operative Dentistry, Graduate School, Seoul National University
2Dept. of Operative Dentistry, Graduate School, Seoul National University
3Dept. of Operative Dentistry, Graduate School, Seoul National University -
- Abstract
- The authers have studied the marginal leakage on various filing materials : Composite resin, Polycarboxylate cement, Zinc phosphate cement, Silicate cement and Zinc-oxide eugenol cement, by means of penetration of 2% aquous methylene blue between cavity walls and filing materials at body temperature and at thermal changs in the range of 4~60℃ The results revealed as follows.
1) All the filling materials revealed the penetration of dye between cavity walls and filling materials.
2) Zinc-oxide eugenol cement was the most effective to prevent the dye penetration on the contrary silicate cement cases showed greatest leakage at 37℃ and at temperature changes in range of 4-60℃.
3) The composite resin showed moderate leakage either at 37℃ or at thermal changes
4) Marginal obstructions of polycarboxylate cement were unsatisfactory at 37℃ and at temperature changes.
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