urface Profilometric Evaluation of Bleached Enamel Surfaces -An In-Vitro Study

Objective: The present in-vitro study aims to compare the effect of two hydrogen peroxide-based bleaching agents on the surface roughness of tooth enamel. Materials and Methods: Twenty-four freshly extracted human maxillary central incisors were selected for the study. The teeth were sectioned longitudinally into two equal halves, and each half was assigned to one of two groups based on the bleaching agent used. Group A was treated with Mani Bleach N Shine (35% hydrogen peroxide), and Group B was treated with SDI Pola Office Plus (37.5% hydrogen peroxide). Surface roughness of the enamel was assessed before and after the bleaching process using a calibrated contact stylus profilometer. Statistical analysis was performed to compare the changes in surface roughness within and between the two groups. Results: The findings revealed that there was a significant increase in enamel surface roughness after bleaching with SDI Pola Office Plus (Group B) compared to Mani Bleach N Shine (Group A). Group B exhibited a statistically significant increase in surface roughness, while no significant difference was observed in Group A. Conclusion: The study concluded that higher concentrations of hydrogen peroxide in bleaching agents can significantly increase enamel surface roughness. Further in-vivo studies and post-bleaching care protocols are recommended to ensure the long-term health of bleached teeth.