Marginal microleakage of dental filling materials
- VernacularTitle:口腔临床充填材料边缘微渗漏的实验研究
- Author:
Qingzhu WU
- Publication Type:Journal Article
- Keywords:
Filling material;
Microleakage;
Density
- From:
Journal of Practical Stomatology
2001;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To compare the marginal microleakage of various d ental filling materials. Methods:45 extracted caries-free teeth were divided into 3 groups with 15 in each. The teeth were cleaned and standard cavity of I and V were prepared and filled with silver amalgm(group 1), GI-1 g lass ion cement(group 2) and glassionomer cement FX(group 3) respectively. The s amples were kept at 37 ℃ for 1-3 months.Dye penetration test was used to obser ve the marginal microleakage.The space between the restorations and tooth struct ure was measured under an electronmicroscope. Results:Dye penetr ation was observed in all the three groups.The teeth with grade 1, 2 and 3 penet ration in group 1 were 11,4 and 0, in group 2 were 1,4 and 10,in group 3 were 2, 8 and 5(P
