Authors : Farahnaz Sharafeddin, Mehran Motamedi and Shiva Modiri
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.
Farahnaz Sharafeddin, Mehran Motamedi and Shiva Modiri, 2013. Effect of Immediate Application of Pomegranate Peel, Grape Seed and Green Tea Extracts on Composite Shear Bond Strength of In-Office Bleached Enamel. Research Journal of Biological Sciences, 8: 83-87.