Ação dos géis clareadores no órgão dental

Abstract

This study aimed to review the literature about the effects of gels used in the tooth whitening procedure and their possible impacts on the dental organ, such as decreased or increased microhardness, tooth sensitivity, pulp necrosis, bleaching effect, mineral loss, increase or decreased porosity. For this, the BIREME and PUBMED research platforms were used and articles from 2002 to 2020 were found. Therefore, among all the existing researches for the most varied factors, the research protocols are very divergent and reach results that are difficult to be compared with each other. The damage to the mineral part of the tooth is influenced by many variables, such as sample polishing, treatment protocol, storage solution, whitening gel concentration, toothbrushing protocol and dentifrices, thus, the analysis of research must seek several parameters to reach solid conclusions. It was concluded the evident lightening potential of different gels in different concentrations and compositions and the sensitivity caused by any studied gel. Bleaching gels must be used following the manufacturers' indications and even so they can cause small levels of pulp necrosis, in addition to increased mineral loss, increased porosity and roughness, and decreased microhardness.