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.
Study Type
OBSERVATIONAL
Enrollment
541
No patient treatment is associated with the study.
University Medical Center Göttingen, Dept. of Preventive Dentistry, Periodontology and Cariology
Göttingen, Lower Saxony, Germany
Success of endodontic treatment
Success is defined as the time-interval without a subsequent endodontic re-intervention or extraction of the tooth.
Time frame: 1998-2023
Survival of the tooth
Survival of the tooth is defined as the time-interval without extraction of the tooth.
Time frame: 1998-2023
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