comparison of microleakage of a self-adhesive composite with a conventional flowable composite and resin modified glass ionomer cement in class v restorations

Introduction: self-adhering flowable composite resins were recently introduced to combine the merits of both adhesive and restorative technologies in one product. this study aimed to evaluate the microleakage of a self-adhering flowable composite in comparison with a conventional flowable composite and resin-modified glass ionomer cement in class v cavities. methods: in this in vitro experimental study, class v cavities were prepared in the buccal and lingual surfaces of 20 sound human molars (40 cavities). the cavities were randomly divided into 4 groups (n=10) and restored with vertise flow self-adhering flowable composite in group a, premise conventional flowable composite in group b, etched with 37% phosphoric acid and restored with optibond solo plus + vertise flow in group c, and fuji ii lc glass ionomer in group d. the specimens were thermocycled for 1000 cycles (5-55°c), immersed in 0.5% basic fuchsine dye solution for 24 h, sectioned, and observed under a stereomicroscope. data were analyzed by spss software using the kruskal-wallis, npar, and wilcoxon signed rank tests (alpha=0.05). results: the kruskal-wallis test showed that the degree of microleakage was not significantly different among different groups at the enamel margin (p=161) or the dentin margin (p=467). the wilcoxon signed rank test revealed that the difference in microleakage between the dentin and enamel margins was significant within all four groups (p<0.05). conclusion: the microleakage of self-adhesive composite, self-adhesive composite with separate etching and bonding, flowable composite, and glass ionomer cement was the same at both dentin and enamel margins.