Microleakage of Class V Compomer and light-cured Glass Ionomer Restorations in Young Premolar Teeth

The purpose of this in vitro study was to compare the microleakge rate of class V compoglass-F and Fuji II LC restorations. Sixty class V cavity preparations with occlusal margins in enamel and gingival margins in cementum were prepared on the buccal and lingual surfaces of 30 extracted human premolar teeth. The teeth were divided randomly into 2 treatment groups. Group 1 was restored with Fuji II LC and group 2 with compoglass-F. After treatment, the samples were stored in tap water for 24 hours, then thermocycled, stained with dye, and finally scored for microleakge. The Mann-Whitney analysis of variance was done for data analysis (α=0.05). The Fuji II LC had a higher degree of microleakge in occlusal and occlusal plus axial walls compared with compoglass (P=0.000). Where as, compoglass had microleakag in gingival and gingival plus axial walls (P=0.0003). The results revealed that Fuji II LC had less microleakage in the gingival margin in which enamel does not exist. Where as microleakage of compoglass restorations was significantly less than FujiII LC in the occlusal wall where enamel exists.