Retrospective Evaluation of Posterior Direct Restorations

Five-year Retrospective Clinical Evaluation of Multi-surface Amalgam and Resin Composite Restorations Placed by Dental Students

This retrospective study aims to evaluate the clinical performance of posterior multi-surface Class II amalgam (AM) and resin composite (RC) restorations placed by dental students over a five-year period.

Purpose: The aim of this retrospective study is to evaluate the clinical performance of posterior multi-surface Class II amalgam (AM) and resin composite (RC) restorations placed by dental students over a five-year period. Materials and Methods: A total of 119 multi-surface Class II restorations (three or more surfaces) placed by third and fourth year students will be evaluated (AM: n = 69 and RC: n = 50). Restorations were assessed clinically according to the USPHS criteria by two independent evaluators using mirrors and probes. Data will be analyzed using Chisquare, Mann-Whitney and Wilcoxon tests at a 0.05 level of significance.

Inclusion Criteria:

• Presence of multi-surface (three or more surfaces) composite or amalgam restorations placed by dental students over a five-year period.

Exclusion Criteria:

• Children
• Restorations performed before or after five years on the time of evaluation
• Restorations with fewer than 3 surfaces