Effect of bamboo salt on bond strength of bleached enamel-an in vitro analysis

Abstract

Aim: The aim of this study was to comparatively evaluate the effect of various antioxidants on the bond strength of bleached enamel and etched enamel surfaces. Materials and Methods: Labial enamel surfaces of 30 extracted single rooted teeth were randomly divided into six groups as follows: Group 1-No bleaching, Group 2-bleaching with 38% hydrogen peroxide, Group 3: bleaching and 10% sodium ascorbate; Group 4: bleaching and 25% Bamboo salt; Group 5: bleaching and 5% proanthocyanidin. Groups 6-etched enamel surfaces treated with 25% bamboo salt. Universal testing machine was used to determine the shear strength values. The data were tabulated and statistically analyzed. Results: The mean shear bond strength values were compared and there was statistically significant differences present among all the groups (p<0.05). The shear bond strength values were highest in unbleached teeth followed by 25% bamboo salt. Among the bleached groups, highest shear bond strength was observed with 25% bamboo salt followed by 5% proanthocyanidin, 10% sodium ascorbate. The bleached group without the use of antioxidants had the least shear bond strength. Conclusion: The antioxidants significantly improved the shear bond strength of the bleached enamel surfaces. The shear bond strength of unbleached controls was the highest. Among the bleached groups, 25% Bamboo salt had higher bond strength followed by 5% proanthocyanidin and 10% sodium ascorbate. Clinical significance: The use of antioxidants improves the shear bond strength and enables immediate bonding and adhesive restoration of bleached teeth.