Evaluation of the effect of gallic acid dentin treatment on the shear bond strength of the composite resin by using universal adhesive, in self-etch and total-etch strategies

Applying 1% and 2% GA improved the shear bond strength of composite resin to the dentin in both self-etch and total-etch approaches with the universal adhesive. These findings indicate that GA holds great potential for expanded clinical applications. <b>Key words:</b>Gallic acid, shear bond strength, universal adhesive.