Journal of Conservative Dentistry
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Year : 2018  |  Volume : 21  |  Issue : 1  |  Page : 100-104

Effect of different antioxidants on reversing compromised resin bond strength after enamel bleaching: An in vitro study

I.T.S Centre for Dental Studies and Research, Ghaziabad, Uttar Pradesh, India

Correspondence Address:
Dr. Sonali Taneja
I.T.S Centre for Dental Studies and Research, Ghaziabad, Uttar Pradesh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/JCD.JCD_325_16

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Objective: The effect of 10% sodium ascorbate, 10% α-tocopherol, 10% grape seed extract, and 10% guava seed extract solutions on the shear bond strength (SBS) of composite resin to bleached enamel was evaluated. Materials and Methods: Labial enamel surfaces of 72 extracted maxillary central incisors were bleached using 37.5% hydrogen peroxide. Sixty-four specimens were divided into four experimental groups (Group I–IV) comprising 16 specimens each and remaining eight specimens were placed in Group V. Groups I–IV were further divided into 2 subgroups: A (10 min) and B (120 min) comprising 8 specimens each. Eight unbleached specimens served as control (Group VI). Immediately following bleaching, Groups IA–IVA and IB–IVB specimens were treated with respective antioxidants for 10 min and 120 min. All specimens were then bonded with composite resin. Specimens were stored in distilled water for 24 h. SBS testing was done. Data were tabulated and subjected to statistical analysis using ANOVA and Tukey's honest significant difference test. Results: Group VI (unbleached) showed the highest SBS followed by Group IV (10% guava seed extract). Conclusion: Use of antioxidants effectively reversed the compromised bond strength of bleached enamel. About 10% guava seed extract application after bleaching showed best bond strength.

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