@article{MAKHILLRJBS20138311400, title = {Effect of Immediate Application of Pomegranate Peel, Grape Seed and Green Tea Extracts on Composite Shear Bond Strength of In-Office Bleached Enamel}, journal = {Research Journal of Biological Sciences}, volume = {8}, number = {3}, pages = {83-87}, year = {2013}, issn = {1815-8846}, doi = {rjbsci.2013.83.87}, url = {https://makhillpublications.co/view-article.php?issn=1815-8846&doi=rjbsci.2013.83.87}, author = {Mehran,Farahnaz and}, keywords = {Antioxidant,shear bond strength,tooth bleaching, grape,seed,green tea}, abstract = {This in vitro study evaluated the effectiveness of 5% solution of grape seed, pomegranate peel, green tea extracts and a 10% solution of sodium ascorbate on composite shear bond strength of bleached enamel. The 70 bovine incisors were divided in 7 groups (n = 10); group A: Immediate bonding; B: 2 weeks delay bonding; C: 10% sodium ascorbate; D: 5% green tea extract; E: 5% pomegranate extract; F: 5% grape seed extract; control: No bleaching, no antioxidant. For groups A-F, hydrogen peroxide gel was applied on the labial surface of teeth then composite with dimension of 5 mm diameter and 2 mm height was placed. Universal testing machine measured the shear bond strength. The data was analyzed using one-way ANOVA and Tukey tests (p≤0.05). Group A exhibited the lowest shear bond strength among the groups (statistically significant; p<0.0001). There was no significant difference between group B-F and control (p>0.05). All the antioxidants used in this study was equally effective to neutralize adverse effects of hydrogen peroxide on composite bond strength of enamel immediately after bleaching.} }