Survival Rate Against Fracture of Endodontically Treated Premolars Restored with Crowns and Resin Composites: A Retrospective Study

The purpose of this study was to assess the survival rate of endodontically treated premolars that were restored with resin composites or crowns. Additionally, possible risk factors were identified through the use of a retrospective cohort design. Based on inclusion and exclusion criteria, dental records of premolar ETT with crowns or composite restorations (recall period, 2018–2023) were gathered. Both the existence of the fracture and any potential prognostic variables were noted. Analysis using statistical methods was done at a significance level of P <0.05. The Chi square test was used for all comparisons, and frequency and percentages were used to depict the qualitative data. There was a significant difference in the survival rates against breakage between teeth replaced with crowns (95.1%) and resin composites (62.1%) (P<0.05). The results showed that there was a significant difference between them in terms of sex, age, opposing dentition, crestal bone level, and fracture incidence. Regarding premolars that have undergone endodontic treatment, crown restorations outperformed resin composites in terms of survival rate. Premolars receiving endodontic therapy and having crestal bone loss up to the middle third of the root were shown to be at an increased risk of fracture.