Uso de técnicas para redução da sensibilidade relacionada ao clareamento de consultório: revisão da literatura

Abstract

INTRODUCTION: Tooth whitening is an affordable, simple and safe aesthetic treatment that allows changing the color of teeth, however it can cause sensitivity and discomfort when not applied properly. The main types are homemade, office and mixed. The products most used in in-office bleaching are hydrogen peroxide and carbamide peroxide, agents that, when in contact with teeth, oxidize organic compounds and pigments, penetrating the dentinal tubules. OBJECTIVE: To estimate and compare techniques for reducing sensitivity during in-office bleaching based on articles already published in the literature. METHODOLOGY: This is a bibliographical, exploratory study carried out through a literature review. The following virtual health databases were used, specifically the Virtual Health Library (VHL), Latin American and Caribbean Information System on Health Sciences (LILACS), National Library of Medicine (PubMed) and Scientific Electronic Library Online (Scielo), from 2012 to 2022. RESULTS: the studies used different desensitizing agents such as 10% nano-calcium phosphate paste, 5% potassium nitrate and 2% sodium fluoride, 5% potassium nitrate with 5% glutaraldehyde on hydroxyethylcellulose gel. Some studies have shown a significant reduction in postoperative SD with their use prior to the in-office bleaching procedure, and others have shown that these agents did not reduce sensitivity. FINAL CONSIDERATIONS: High levels of tooth sensitivity have been related to in-office bleaching. Desensitizing agents are generally included in the composition of bleaching agents to reduce tooth sensitivity induced by bleaching. Most studies indicate 5% potassium nitrate and 2% sodium fluoride as desensitizing agents, used before and after in-office bleaching. Therefore, among these studies reported that these agents can reduce DS and others reported that there was no reduction in sensitivity. Therefore, further studies are needed for the prior use of agents to control postoperative sensitivity after in-office bleaching.