The aim of this study is to determine and compare the longevity of single-tooth cast restorations made of precious metal vs. non-precious metal (e.g. partial crowns, crowns) and to determine the influence of patient-, tooth-, treatment-, and restoration-specific parameters on longevity. Patients who received single-tooth cast restorations made of precious metal or non-precious metal (e.g. partial crowns, crowns) between 1997 and 2022 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 restorations 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.
No patient treatment is associated with the study.
Study Type
OBSERVATIONAL
Enrollment
4,000
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 restoration
Success is defined as the time-interval without a subsequent re-intervention of the restoration or extraction of the tooth.
Time frame: 1997-2023
Survival of restoration
Survival is defined as the time-interval without replacement of the restoration or extraction of the tooth.
Time frame: 1997-2023
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.