Antioxidants Reduce Microleakage of Resin-based Composite Fillings and the Associated Toxicity After Bleaching Human Teeth

Background: Bleaching teeth is popular because the discoloration a major people’s concern. This study aimed to compare effect of three antioxidants on microleakage composite resin filling after bleaching with 35% H2O2, thus minimizing potential clinical toxicity materials entering patients’ body. Methods: Sixty-six extracted intact were included in this study. After preparation ClV cavity buccal surface, randomly divided into six groups (n=11, each). Except for group A (control), all others bleached. Cavities filled resin. In B, samples immediately restored while C, was delayed two weeks bleaching. D, E, and F, cavities treated either sodium ascorbate, ascorbic acid, or vitamin restored. Teeth sectioned microleakages examined microscopically, data analyzed statistically. Results: Group showed least amount microleakage. there significant increase when The among F similar those A. Conclusion: increased significantly treating dental effectively reduced Thus, useful approach minimize findings help reduce prevent arising from materials.