Two-year clinical performance of dimethacrylatebased composite restorations repaired with a silorane-based composite.

Purpose: To investigate the clinical performance of a silorane-based composite resin used for repairing dimethacrylate- based composite restorations.

Materials And Methods: One operator repaired defective dimethacrylate-based resin restorations that were randomly assigned to one of two treatment groups: control (n=50), repaired with Adper SE Plus and Filtek P60 Posterior Restorative (3M ESPE); or test (n=50), repaired with P90 System Adhesive Self-Etch Primer and Bond and Filtek P90 Low Shrink Posterior Restorative (3M ESPE). After 1 week, restorations were finished and polished.