| ORIGINAL ARTICLE |
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| Year : 2016 | Volume
: 34
| Issue : 4 | Page : 391-396 |
Effect of newer antioxidants on the bond strength of composite on bleached enamel
M Manoharan1, KK Shashibhushan2, P Poornima2, Sathyajith N Naik3, Disha Patil2, AS Shruthi2
1 Department of Pedodontics and Preventive Dentistry, Vivekanandha Dental College, Namakkal, Tamil Nadu, India
2 Department of Pedodontics and Preventive Dentistry, College of Dental Sciences, Davangere, Karnataka, India
3 Department of Pedodontics and Preventive Dentistry, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India
Correspondence Address:
M Manoharan
Department of Pedodontics and Preventive Dentistry, Vivekanandha Dental College, Tiruchengode, Namakkal - 637 205, Tamil Nadu
India
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/0970-4388.191430
Aim: The study aims to evaluate the effect of the application of two antioxidants on the bond strength of composite resin to bleached enamel. Materials and Methods: Eighty enamel surfaces were obtained from forty human extracted premolars. Specimens were randomly divided into four groups (n = 20). Group 1: No bleaching (control); Group 2a: Bleaching with 15% carbamide peroxide gel; Group 2b: Bleaching, followed by application of 10% sodium ascorbate gel; Group 2c: Bleaching, followed by application of 5% proanthocyanidin agent. Surfaces were etched followed by application of total etch bonding system, and composite resin cylinders were bonded. Specimens were tested for shear bond strength. Statistical Analysis Used: One-way analysis of variance was used for multiple group comparison and post hoc Tukey's test for individual group-wise comparison. Results: Significantly higher shear bond strength values were observed in Group 2c and 2b as compared with Group 1 and 2a (P < 0.05). Among the antioxidants, Group 2c showed significantly higher shear bond strength values than Group 2b (P < 0.05). Conclusion: It can be concluded that the use of antioxidant before bonding procedures on bleached enamel completely neutralizes the deleterious effects of bleaching and increases the bond strength significantly.
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