The Effect of Carbamide Peroxide Bleaching Gel Containing Remineralization Agents on the Bond Strength of Universal Adhesives to Enamel ...

Background: The aim of this study was to examine the effect of carbamide peroxide bleaching gel containing remineralization agents on the bond strength of universal adhesives to enamel. Materials and Methods: One hundred and thirty five extracted human third molars were divided into five groups to receive treatments during 14 days, as follows: no bleaching treatment (control group); 10% carbamide peroxide (CP); 10% CP containing 0.11% fluoride; 10% CP containing CPP-ACP; and 10% CP containing CPP-ACP and 0.11% fluoride. The buccal surfaces of all teeth were etched with 37% phosphoric acid, and each group was devided into three subgroups to receive the adhesive resins: All Bond Universal; Scotchbond Universal and Adper Single Bond 2. Then restored teeth were sectioned to create resin–enamel beams. These beams were subjected to the micro-tensile bond strength (μTBS) test, and assessed for failure mode under scanning electron microscopy. Results: The highest mean μTBS of the composite resin to enamel was ...