Evaluation of the Clinical Success of Direct Restorations of Endodontically Treated Posterior Teeth in the Presence of Parafunction: A Pilot Study

The study included premolar or molar teeth with Class 1 and Class 2 cavity types and a remaining wall thickness of at least 3 mm, which had undergone endodontic treatment from volunteer participants. The teeth randomly assigned were divided into two groups: Group 1: fiber-reinforced composite restoration (FRCR), Group 2: composite restoration (CR). Direct composite restorations with or without fiber reinforced material were applied. The restorations were evaluated at 6 and 12 months using the FDI criteria.

The restorations were evaluated by two experienced and fully blinded observers according to the functional, esthetic, and biological criteria. The criteria were scored from 1 to 5 (sufficient/acceptable= score 1 to 3, insufficient/inacceptable but repair possible= score 4, and insufficient/inacceptable but repair not possible/reasonable= score 5). Scores of 4 and 5 were considered as failure in the restoration.