Survival Rate Of Endodontically Treated Teeth With Posts After Prosthetic Restoration.

Abstract

Background

Endodontically treated teeth (ETT) often require additional support for prosthetic restoration to ensure their long-term survival. Post systems, used to reinforce ETT, play a critical role in improving structural integrity and functional longevity. This study aims to evaluate the survival rate of ETT restored with posts and prosthetic crowns over a specified follow-up period.

Materials and Methods

A retrospective analysis was conducted on 120 patients treated between January 2018 and December 2022. The study included 150 ETT restored with fiber-reinforced composite posts, metallic posts, or prefabricated posts, followed by prosthetic crowns. Patients were followed up for an average of 36 months. Data on failure modes, post types, and survival rates were recorded. Kaplan-Meier survival analysis was used to estimate survival probabilities, and statistical significance was evaluated using the log-rank test.

Results

The overall survival rate of ETT with posts and prosthetic crowns was 88% at the 36-month follow-up. Teeth restored with fiber-reinforced composite posts exhibited a higher survival rate (92%) compared to metallic posts (84%) and prefabricated posts (80%) (p < 0.05). Most failures were due to root fractures (10%), while secondary caries accounted for 7% of failures. The survival rate was significantly influenced by the post type and the remaining tooth structure.

Conclusion

The study highlights that ETT restored with fiber-reinforced composite posts demonstrate superior survival rates compared to metallic and prefabricated posts. Appropriate post selection and preservation of the remaining tooth structure are crucial for the long-term success of prosthetic restorations on ETT. Further longitudinal studies are warranted to validate these findings.