NCT06441058

Retrospective Database Study: Influence of Post-endodontic Restoration Placement on Survival of Root Canal-treated Teeth

Influence of the Timing of Post-endodontic Restoration Placement on the Survival of Root Canal-treated Teeth

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 541 (actual)
• Sponsor: University of Göttingen · Academic / Other
• Sex: All
• Age: —
• Healthy volunteers: Not accepted

Summary

The aim of this study is to assess the influence (i.e. type and timing) of post-endodontic restorations on the survival of root canal-treated teeth and to determine the influence of patient-, tooth-, treatment-, and restoration-specific parameters on longevity. Patients who received a root-canal treatment between 1998 and 1999 with subsequent placement of an indirect restoration (e.g. crown, partial crown) will be retrospectively analyzed. Patient-, tooth-, treatment-, and restoration-specific parameters will be obtained from digital and paper-based dental records. Survival and success of the root-canal treatments will be assessed using Kaplan-Meier statistics. Mean annual failure rates (mAFR) and median survival time will be calculated (Kaplan-Meier statistics). Potential predictive factors will be tested using log-rank tests and multi-variate Cox-regression analysis.

Conditions

• Root Canal Treatment

Interventions

Type	Name	Description
OTHER	No patient treatment is associated with the study	No patient treatment is associated with the study.

Timeline

• Start date: 2024-06-01
• Primary completion: 2025-06-01
• Completion: 2025-06-01
• First posted: 2024-06-04
• Last updated: 2026-01-27

Locations

1 site across 1 country: Germany