Evaluation of Dental Bleaching In-office

We aim to evaluate colorimetric changes after supervised whitening treatment, using Violet LED light associated or not with carbamide peroxide 35% gel. 80 will be divided into: Group 1 - Violet LED light, Group 2 Violet LED light + carbamide peroxide 35% gel, Group 3 -hydrogen peroxide 35% and Group 4 will be submitted to the gingivoplasty surgery procedure, for aesthetic desire, after whitening treatment with Violet LED light without gel. The colorimetric changes will be measured before, right after each whitening session in the end of the period of 3 months, through the Vitapan Classical (Vita) color scale, and by digital spectrophotometer. The sensibility degree will be measured by the Visual Analogue Scale (VAS) . The gum tissues Group 4, will be analyzed by histomorphometrically. Quality of life will be evaluated.