Retrospective Database Study: Survival of Cast Restorations - Restorations Made of Precious Metal vs. Non-precious Metal

NCT06441032 | Enrolling By Invitation

• 2 other identifiers: Survival-Cast-Restorations21/11/22
• Study Type: observational
• Target: 4,000
• Locations: 1 country
• Sites: 1

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.

Conditions

Dental Restoration Failure

Outcome Measures

Primary Outcomes (1)

• Success of restoration

  Success is defined as the time-interval without a subsequent re-intervention of the restoration or extraction of the tooth.

  1997-2023

Secondary Outcomes (1)

• Survival of restoration

  1997-2023

Study Arms (2)

Precious metal

Single-tooth cast restorations made of precious metal.

Other: No patient treatment is associated with the study

Non-precious metal

Single-tooth cast restorations made of non-precious metal

Other: No patient treatment is associated with the study

Interventions

No patient treatment is associated with the study OTHER

No patient treatment is associated with the study.

Non-precious metal; Precious metal

Eligibility Criteria

• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Patients insured in the statutory health insurance 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.

You may qualify if:

• 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.

You may not qualify if:

• None.

Sponsors & Collaborators

• University of Göttingen: lead

Study Sites (1)

University Medical Center Göttingen, Dept. of Preventive Dentistry, Periodontology and Cariology

Göttingen, Lower Saxony, 37075, Germany

Location

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: RETROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Senior Lecturer

Study Record Dates

• First Submitted: May 28, 2024
• First Posted: June 4, 2024
• Study Start: June 1, 2024
• Primary Completion: June 1, 2025
• Study Completion: June 1, 2025
• Last Updated: June 7, 2024

Record last verified: 2024-06

Data Sharing

• IPD Sharing: Will not share

Locations

DE (1)