Surface Treatments on Repair Bond Strength of Aged Resin Composites.

Aims: The aim was to evaluate the effect of different surface treatments on the repair shear bond strength of aged resin composites.

Materials And Methods: Forty cylindrical-shaped specimens were treated from each material: Tetric Evo Ceram, Neo Spectra, and Filtek Ultimate Universal Restorative and allocated into four groups according to the surface treatment planned to use: Group 1: diamond, Group 2: silica coating, Group 3: carbide burs, and Group 4: control group. Following the surface treatment, composites were repaired with flowable resins.