Comparison of fiber-reinforced composite and nanohybrid resin impregnated with glass fibers as postendodontic restoration in molars – A clinical study

BACKGROUND: Restoration of endodontically treated teeth is one of the most challenging part of operative dentistry. The introduction of fiber-reinforced composite has provided a considerable opportunity to modify material's behavior and to enhance the response of existing materials. AIM: The aim of the study is to comparatively evaluate the efficacy of fiber-reinforced composite resins and nanohybrid resin impregnated with glass fibers as postendodontic restoration in molars. MATERIALS AND METHODS: Fifty patients with deep occlusal carious lesion requiring root canal treatment were selected and treated. For postendodontic restoration, it was divided into Group A (Interlig) and Group B (ever-X posterior) which were eventually restored according to the manufacturer's instructions. Patients were recalled for evaluation at 3-, 6-, 12-month interval. The restorations were evaluated according to modified United States Public Health Service Criteria. STATISTICAL ANALYSIS: Chi-square test was used for intergroup comparison. RESULTS: A statistically significant difference was noted in terms of fracture of tooth and ever-X posteriors proved to be a superior material and no statistically significant difference observed for marginal discoloration, marginal integrity, fracture of core-build up and secondary caries at the evaluation period of 1 year. CONCLUSION: Ever-X posteriors performed better than Interlig group as postendodontic restoration after 1 year of evaluation.