Outcome of Chairside CAD/CAM Ceramic Restorations on Endodontically Treated Posterior Teeth: A Prospective Study

Abstract

Abstract Objective: The aim of this study was to evaluate the outcome and risk factors for chairside CAD/CAM full cusp coverage restorations on endodontically treated posterior teeth after 3 years offollow-up. Methods: A total of 246 endodontically treated posterior teeth of 226 patients were included and restored with CAD/CAM full cusp coverage all-ceramic restorations according to a standardized protocol. Patients were recalled after treatments 1 to 3 years and underwent clinical and radiological examinations. At recall, modified FDI criteria were used to determine treatment outcomes by 2 evaluators. Success was determined when FDI scores were 1-2, and failure was indicated when FDI scores were 5. Logistic regression analysis was performed to evaluate potential risk factors. Results: 183 patients presented at recall, and the clinical outcomes of 201 teeth were analyzed with a recall rate of 82.0%for teeth and 81.7% for patients after 1-3 years offollow-up.187 of 201 teeth were found to have FDI scores of 1-2, and the success rate was 92%. No teeth were extracted during the follow-up period. Fourteenfailed cases with an FDI score of 5 presented restoration dislocation, fracture of restoration or/and tooth. Logistic regression analysis revealed that oral parafunction (OR 2.281, 95% CI 2.2~47.5, P value 0.01) was a risk factor for success rate. Conclusion: Chairside CAD/CAM all-ceramic full cusp coverage restoration was (could be) a promising alternative for restoring endodontically treated posterior teeth.