Retrospective Database Study: Survival of Cast Restorations - Restorations Made of Precious Metal vs. Non-precious Metal
- Conditions
- Dental Restoration Failure
- Registration Number
- NCT06441032
- Lead Sponsor
- University of Göttingen
- Brief Summary
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.
- Detailed Description
No patient treatment is associated with the study.
Recruitment & Eligibility
- Status
- ENROLLING_BY_INVITATION
- Sex
- All
- Target Recruitment
- 4000
- Patients insured in the statutory health insurance.
- Patients who received single-tooth cast restorations made of precious metal or non-precious metal (e.g. partial crowns, crowns) within the Department of Preventive Dentistry, Periodontology and Cariology between 1997 and 2022.
- None.
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Success of restoration 1997-2023 Success is defined as the time-interval without a subsequent re-intervention of the restoration or extraction of the tooth.
- Secondary Outcome Measures
Name Time Method Survival of restoration 1997-2023 Survival is defined as the time-interval without replacement of the restoration or extraction of the tooth.
Trial Locations
- Locations (1)
University Medical Center Göttingen, Dept. of Preventive Dentistry, Periodontology and Cariology
🇩🇪Göttingen, Lower Saxony, Germany
University Medical Center Göttingen, Dept. of Preventive Dentistry, Periodontology and Cariology🇩🇪Göttingen, Lower Saxony, Germany