A Comparative Evaluation of Microleakage in Class V Composite Restorations

Aim. To compare and evaluate the microleakage in class V lesions restored with composite resin with and without liner and injectable nanohybrid composite resin. Materials and Methodology. 60 class V cavities were prepared in 30 freshly extracted teeth. After etching and application of bonding agents these cavities were divided into three groups: Group A (n = 20)-restored with composite resin, Group B (n = 20)-flowable composite resin liner + composite resin, and Group C (n = 20)-restored with injectable composite resin. After curing all the specimens were subjected to thermocycling and cyclic loading. Specimens were stained with 0.5% basic fuchsin and evaluated for dye penetration. Results. Results are subjected to Kruskal Wallis and Wilcoxon test. Conclusion. Within the limitations of this study, none of the threematerials were free frommicroleakage. All the threematerials showed more microleakage at gingival margins compared to occlusal margins. Among all the groups G-aenial Flo showed the least microleakage at the gingival wall.