Microleakage comparision in class V Cavities using different glass ionomer cements: An in-vitro study

Aim: The aim of this study was to compare the microleakage of Conventional  Glass Ionomer Cement(CGIC),Resin Modified Glass Ionomer Cement (RMGIC)and Nano-Filled Resin Modified Glass Ionomer Cement (RMGIC). Materials and Methods: forty five sound extracted human molar teeth were selected. Teeth were randomly divided into three groups of 15 teeth each and restored as follows: Group 1-CGIC; Group 2-RMGIC; and Group 3-Nano-filled RMGIC. Datas were analyzed using Kruskal-Wallis and Wilcoxon tests. Results: There was no statistically significant differences in dye leakage between the three restorative materials for occlusal margins (P = 0.465).At the gingival margins, Group 3 showed significantly less microleakage than Groups 1 (P = 0.008) and 2 (P = 0.041). The degree of microleakage in the gingival margins of each group was higher than that found in occlusal margins. Conclusions: No material was able to completely eradicate microleakage at enamel, dentin, or cementum margin. Nano-filled RMGIC show significantly less microleakage as compared to other two cements at gingival margins