Comparative Evaluation of Two in -Office Bleaching Agents Using Two Different Light Sources- In Vivo Study

Abstract

The purpose of this study was to evaluate and compare the effect of 35% Hydrogen Peroxide and 35% Carbamide peroxide in - office bleaching agents using plasma arc and laser light sources on colour change, enamel surface morphology and sensitivity on teeth. -in vivo study Material and method: This study was carried out on 12 patients in which four groups i.e. 35% carbamide peroxide and plasma arc (CPP), 35% carbamide peroxide and laser light source (CPL), 35% hydrogen peroxide and Plasma arc (HPP), 35% hydrogen peroxide and laser light source (HPL) were made in all the four quadrants in anterior teeth. Preoperative baseline shade and impression was taken and same was repeated post operatively. After bleaching procedure colour change was evaluated using VITA classic shade guide , change in enamel surface morphology was calculated on epoxy model using contact profilometer and tooth sensitivity was analyzed using VAS scale. Result: 35% Carbamide peroxide and plasma arc (CPP) group showed significant colour change followed by 35% hydrogen peroxide plasma arc (HPP) group, 35% hydrogen peroxide and lasers (HPL)group and 35% carbamide peroxide and laser (CPL)group whereas highest change in enamel surface morphology was observed in 35% hydrogen peroxide and laser light source (HPL) group followed by 35% carbamide peroxide and laser light source (CPL) group, 35% hydrogen peroxide plasma arc (HPP) group , 35% carbamide peroxide plasma arc (CPP) group. Conclusion: Carbamide peroxide 35 % using plasma arc presented greater colour change as compared to Hydrogen peroxide 35% using laser light source. Laser light source caused more change in enamel surface morphology as compared to plasma arc.