Clinical Application of Violet LED In-office Bleaching with or without Traditional Systems: Case Series

Abstract

Objective: This study evaluated the efficacy and tooth sensitivity of bleaching with the novel violet LED light used in different in-office approaches. Clinical Considerations: Three patients were submitted to anamnesis, clinical and radiographic exams and to different bleaching protocols and materials. Case report I: Violet LED light was applied in 20 irradiations of 1 minute at 30-s intervals without the use of peroxide agents. After eight appointments with 4 or 7-day intervals, no tooth sensitivity (TS) was reported and color changed from A2 to A1 and from B3 to A2 in upper central incisor (tooth 11) and upper canine (tooth 13), respectively. Case report II: The same protocol established for violet LED light application was used and associated with 37% carbamide peroxide in three appointments at intervals of 7 days. Color changed from A3,5 to B2 (tooth 13), and provoked TS was reported. Case report III: 35% hydrogen peroxide was associated with the same violet LED regimen and number of sessions. Although spontaneous TS was reported in low levels, color changed from A2 to B1 (tooth 11) and from A3 to B1 (tooth 13). Conclusion: Although the three treatments promoted different bleaching responses, in vitro and in vivo investigations of the violet LED protocols are still necessary. In addition, the fact that the sensitivity levels obtained are compatible with conventional bleaching treatments demonstrated that violet LED light is possibly adequate for clinical use. Clinical Significance: Bleaching of vital teeth with violet LED with or without peroxide agents exhibited acceptable clinical results and low sensitivity responses.