수종충전재의 변연누출에 관한 실험적 연구 |
이윤상1, 김홍석2, 박가명3 |
1서울대학교 치과대학 보존학교실 2서울대학교 치과대학 보존학교실 3서울대학교 치과대학 보존학교실 |
A Study of Marginal Leakage on Various Filling Materials |
Yoon-Sang Lee1, Hong-Suk Kim2, Ka-Myung Park3 |
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 |
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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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