Evaluation of the color change and tooth sensitivity in treatments that associate violet LED with carbamide peroxide 10 %: A randomized clinical trial of a split-mouth design

Author(s)

Gallinari, Marjorie de Oliveira ^[1] ; Angelo Cintra, Luciano Tavares ^{[1, 2]} ; Souza Barboza, Ana Carolina ^{[1, 2]} ; Alves Valentim da Silva, Livia Maria ^{[1, 2]} ; de Alcantara, Sibele ^{[1, 2]} ; dos Santos, Paulo Henrique ^[3] ; Fagundes, Ticiane Cestari ^{[1, 2]} ; Fraga Briso, Andre Luiz ^{[1, 2]}

Affiliation

^[1] Sao Paulo State Univ UNESP, Aracatuba Sch Dent, Dept Restorat Dent, Aracatuba, SP - Brazil

^[2] dos Santos, Paulo Henrique, Sao Paulo State Univ UNESP, Aracatuba Sch Dent, Dept Dent Mat \& Prosthodont, Aracatuba, SP, Brazil.Gallinari, Marjorie de Oliveira, Sao Paulo State Univ UNESP, Aracatuba Sch Dent, Dept Restorat Dent, Aracatuba, SP - Brazil

^[3] Sao Paulo State Univ UNESP, Aracatuba Sch Dent, Dept Dent Mat & Prosthodont, Aracatuba, SP - Brazil

• Document type: Journal article
• Source: Photodiagnosis and Photodynamic Therapy; v. 30, JUN 2020.
• Web of Science Citations: 0

Abstract

Background: To evaluate the bleaching efficacy and post-operative sensitivity of 10 % carbamide peroxide (PC) with or without violet LED (VL). Methods: Thirty patients were selected and were instructed to perform home bleaching treatment using PC 10 %, for 8 h daily, for 21 days. All patients underwent in-office irradiation of only one hemiarch with VL for 30 min, twice per week for three weeks, totaling six clinical sessions of irradiation. The treatment used for each hemiarch was determined randomly. The analyses were performed at the initial time and 7, 14, and 21 days after the start of treatment and 7 and 14 days after the end of the bleaching treatment. For color analysis, digital spectrophotometry was done using the Visual Analog Scale and cold detection was performed using the thermo-sensory analysis II (TSA II) equipment. The ANOVA-two way with repeated measures and the Tukey test (alpha = 0.05) were used for the color and cold sensitivity analysis. Results: On analyzing the color change, it was observed that the hemiarch that was irradiated with VL presented the highest values compared with the side that did not receive irradiation. Regarding tooth sensitivity, there was no report of any patient experiencing discomfort during the bleaching protocol. Analysis of the dental thermal sensation threshold showed that the use of VL made the teeth more sensitive. Conclusions: It can be concluded that the VL provided a positive effect on color alteration when used in conjunction with 10 % PC. However, the use of this new protocol made the teeth more sensitive. (AU)

• FAPESP's process: 16/19982-6 - Use of violet light in tooth whitening: study of efficacy whitener, tooth fluorescence, trans-dentinoenamel penetration H2O2, cytotoxicity, hydraulic conductance, heat generation and adhesion to resin materials
• Grantee: Marjorie de Oliveira Gallinari
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 17/07000-7 - Dental bleaching with violet light: effects on chromatic change, bonding strength, hybrid layer nanohardness and collagen strength
• Grantee: Ana Carolina Souza Barboza
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 15/21682-8 - Influence of the use of topical and systemic substances in inflammation after bleaching treatment
• Grantee: Livia Maria Alves Valentim da Silva
• Support Opportunities: Scholarships in Brazil - Scientific Initiation