Microleakage of Resin- Modified Glass Ionomer Cement and Compomer Restorations in vitro
- VernacularTitle:改良型玻璃离子水门汀及复合体的边缘微漏研究
- Author:
Yi, LU
;
Ling, DING
;
Qun, LU
- Publication Type:Journal Article
- From:Journal of Shanghai Jiaotong University(Medical Science)
2001;21(1):52-54
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo evaluate the marginal integrity of restoration in two types of mate- rials, or resin- modified glass ionomer cement and polyacid- modified composite resin (compomer). MethodsRestorations of four kinds of material (GC Fuji Ⅱ LC, VitremerTM, Dyract compomer and F2000 compomer) were placed in the facial Class V cavity preparations in forty noncarious human molar teeth. The teeth were randomly assigned to 4 experimental groups of 10 teeth each. After thermal cy- cling( × 20,5 ～55℃ ), the teeth were immersed in 1％ basic fuchsin dye for 24 hours at room tempera- ture. Staining along the teeth restoration interface was recorded. ResultsThe data indicated signifi- cant differences between all the restorative materials for both occlusal and gingival scores ( P=0.026, P = 0. 000)respectively. Further analysis revealed there were statistically significant differences between GC Fuji Ⅱ LC and others on occlusal margins versus Dyract compomer and others on gingival margins. Conclusion Factors such as dental conditioning, rates of water absorption and thermal coefficient were related to microleakage. Resin - modified glass ionomer cement showed less microleakage than polyacid- modified composite resin tested.
