A Retrospective Study on Long-Term Technical Complications of Single Metal-Ceramic Crowns With a Supplementary Questionnaire Survey

This observational study aims to evaluate the long-term clinical outcomes and biological complications associated with metal-ceramic crowns. Patient dental records will be reviewed to identify eligible participants, who will subsequently be invited for a clinical examination. The clinical condition of the metal-ceramic crowns and the supporting teeth and periodontal tissues will be assessed using predefined clinical criteria. The study aims to provide information on the long-term clinical performance of metal-ceramic crowns and the occurrence of associated biological complications. Participants will also compleate a questionnaire assessing oral health-related habits and satisfaction with metal-ceramic crown.

Inclusion Criteria: * adult patients with at least one metal-ceramic single crown meeting the predefined study criteria. * ability and willingness to participate in the clinical examination and complete the questionnaire Exclusion Criteria: * teeth serving as abutments for fixed partial prostheses (FPPs) * teeth as abutments for removable partial dentures (RPDs)