A randomized clinical study evaluating thirty-month clinical performance of Class II indirect restorations in endodontically-treated teeth using ceramic, hybrid, and composite CAD/CAM blocks

Objectives This clinical study evaluates the 30-month clinical performance of class II indirect restorations using ceramic, hybrid, composite blocks to endodontically-treated teeth. Materials and methods A total of 60 indirect class II restorations were performed in 51 patients using Cerasmart (GC Dental Products Europe, Leuven, Belgium) composite, IPS e.max CAD (Ivoclar Vivadent, Schaan, Liechtenstein) ceramic, and Vita Enamic (Vita Zahnfabrik, Bad Sackingen, Germany) hybrid blocks. All the restored teeth had root canal treatment. The restorations were evaluated using modified FDI criteria for 30 months. The data were analyzed using Kruskal-Wallis analysis and Friedman two-way analysis of variance. Results A total of 53 restorations of the 60 restorations could be followed up at the end of 30 months. No statistically significant difference was observed between the groups after 30 months in terms of all criteria evaluated (p > 0.05). Conclusion Composite, ceramic, and hybrid blocks showed successful clinical performance in posterior teeth with large material loss. Clinical relevance: In the literature, the information about which indirect material is the most appropriate for the restoration of endodontically treated teeth is insufficient. In this study, the restorations made using different indirect materials showed similar clinical performance at the end of the 30-month.