COMPARAÇÃO DA SENSIBILIDADE PRODUZIDA PELA TÉCNICA DE CLAREAMENTO COM SUBSTÂNCIAS DE PERÓXIDO DE CARBAMIDA E PERÓXIDO DE HIDROGÊNIO EM DIFERENTES CONCENTRAÇÕES: revisão de literatura

Abstract

INTRODUCTION: Whitening, unlike other restorative treatment modalities, is a conservative procedure. The main gels available on the market are hydrogen peroxide and carbamide peroxide in different concentrations, with different indications in terms of use and exposure time, the two main techniques being: in-office bleaching and supervised at-home bleaching. OBJECTIVE: This study will review the literature comparing the sensitivity promoted by bleaching treatment with different concentrations of hydrogen peroxide and carbamide peroxide, in addition to the influence of different application methods. METHODOLOGY: A bibliographic survey was carried out in the following databases: Bireme, SciELO, Medline, PubMed, BVS, Science Direct. The search terms were used in different combinations: tooth whitening, tooth sensitivity, carbamide peroxide, hydrogen peroxide.DISCUSSION: Even though it is a safe treatment, sensitivity stands out as a side effect, and may intensify if the peroxide reaches the pulp chamber, promoting an inflammatory response in the pulp. The hydrogen peroxide bleaching gel, concentrations greater than 35% and the inoffice application technique promoted greater sensitivity in patients. CONCLUSION: Whitening agents with higher concentrations achieve a faster whitening effect, however they are associated with a higher risk of possible side effects, such as tooth sensitivity.