COMPARATIVE EVALUATION OF FRACTURE RESISTANCE AND MICROLEAKAGE OF ENDODONTICALLY TREATED TEETH ASSOCIATED WITH INVASIVE CERVICAL RESORPTION, RESTORED WITH DIFFERENT ADHESIVE RESTORATIVE MATERIALS: AN IN VITRO STUDY

Aim: To evaluate the fracture resistance and microleakage of endodontically treated teeth with simulated cervical cavities restored with different restorative materials namely Glass Ionomer Cement (GIC), Resin Modified Glass Ionomer Cement (RMGIC), Flowable Composite (FC), Compomer, Giomer and SDR Flow. Materials and Method: One hundred twenty-eight extracted human permanent incisor teeth were assigned to eight groups.All the groups were subjected to endodontic treatment. Samples were equally divided based on materials used Group I (resorptive cavities were not prepared)and Group II (resorptive cavities were prepared and left unrestored), Group III (GIC), Group IV (RMGIC), Group V (FC), Group VI (Compomer), Group VII (Giomer), Group VIII (SDR Flow). Resorption cavities were prepared (3mm diameter and 2mm depth) labially in the specimens belonging to Group II to Group VIII and restored with respective restorative materials.Compressive load was calculated underUniversal Testing Machine and microleakage was tested using Confocal Laser Scanning Microscope. Statistical Analysis: Statistical analysis was done using one-way ANOVA and Tukeys multiple comparison testand P < 0.05 was considered statistically significant. Results: Multiple comparisons revealed that group VI (compomer) had significantly highest fracture resistance with non-significant p value (p0.05) when compared among all the experimental groups and showed lowest microleakage values among all the experimental groups with significant p value (p0.05). Conclusion: None of the restorative material eliminated the fracture resistance and micro leakage. However, group VI (Compomer) showed promising results in providing maximum of fracture resistance