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Home > Archives > Volume 20, No 11 (2022) > Article

DOI: 10.14704/nq.2022.20.11.NQ66065

An in-vitro evaluation of the effectiveness of 10% Alpha-Tocopherol solution, 10% Sodium ascorbate solution

Dr.Srikumar G.P.V. , Dr.Anjali Gurnani , Dr.Nivedita Jaipuriar , Dr.Shripriya Rahane , Dr.Vaishali Shukla , Dr.Megha Ghosh


140 extracted human permanent maxillary central incisor teeth were included. All specimens were decoronated 2mm apical to cemento-enamel junction and were embedded in self-cure acrylic resin blocks with only the labial surfaces of the crown portion of teeth visible and circular windows were made on the labial surfaces of all teeth using acrylic resin in dimensions of 5mm diameterx 3mm height. The 140 specimens were then randomly divided into 7groups (5 Experimental groups & 2 Control groups) with 20 specimens per group. The exposed labial surfaces of enamel in all the specimens were then bleached with 37.5% Hydrogen peroxide gel, except in Negative control group in which the specimens were not bleached.In Group A:10% Alpha-Tocopherol solution, Group B:10% Sodium ascorbate solution,Group C:10% Sodium ascorbate gel, Group D:10% Green tea extract solution, Group E:10% Grape seed extract solutions were used as antioxidants. Immediately after tooth bleaching, by using applicator tips the freshly prepared antioxidant solutions were applied on bleached enamel as per group for 10minutes followed by fresh application of it once in every 2 minutes. Group F (Positive control)


:Antioxidants; Bleaching; Dental composites; Shear bond strength; Universal testing machine

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