Mehran  Motamedi, Farahnaz  Sharafeddin, Shiva  Modiri, 
    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,
    Volume 8,Issue 3,
    2013,
    Pages 83-87,
    ISSN 1815-8846,
    rjbsci.2013.83.87,
    (https://makhillpublications.co/view-article.php?doi=rjbsci.2013.83.87)
    Abstract: This <I>in vitro</I> 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&le;0.05). Group A exhibited the lowest shear bond strength among the groups (statistically significant; p&lt;0.0001). There was no significant difference between group B-F and control (p&gt;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.
    Keywords: Antioxidant;shear bond strength;tooth bleaching; grape;seed;green tea