Evaluating the Shear Bond Strength of Repaired Composites Using Different Surface Treatments and Repair Materials: An Comparative Study.

Introduction: Composite resin is commonly used in dental restorations, though it is prone to degradation over time. Repairing these restorations is often preferable for issues such as discoloration, small areas of decay near the restoration margin, or for preserving tooth health without the need for complete removal.

Method: Sixty acrylic blocks with cavities were restored using FILTEK-Z-250 XT composite resin, which was then light-cured.