Objectives: The aim of this in vivo study was to evaluate desensitizing-containing, carbamide peroxide (CP) agents of different concentrations for color change, tooth sensitivity, and patientxs satisfaction. Methods: Thirty patients presenting A2 to A3-shaded teeth were selected and ascribed to one of the following bleaching groups (2 hours per day for 45 days) in a split-mouth design (n=10): 15 patients right side with potassium nitrate-containing 10% CP (PC10%, BM4) and left side with potassium nitrate, sodium fluoride-containing 10% CP (Opalescence PF, Ultradent). Other 15 patients were subjected to the same protocol, except for the concentration (15% CP). The shade of the six maxillary anterior teeth was recorded using a spectrophotometer (Easyshade, Vident) and a shade guide (Vita Pan Classic, Vita Zahnfabrik), before treatment, and after 15 days, 30 days, and 45 days. Tooth sensitivity was evaluated using a VAS-scale and patientxs satisfaction using a form. Results: No statistically significant differences were observed for all evaluated criteria, and all evaluation periods. All patients were satisfied and no significant sensitivity was reported after 45 days. Conclusion: The presence of desensitizing agents does not influence the efficacy of bleaching and decreased/resulted in low tooth sensitivity rates.
Key-words: bleaching, dentin sensitivity, esthetics.