Efetividade do clareamento interno através das técnicas mediata e imediata: revisão sistemática

Abstract

The search for tooth whitening has increased over the years, being a procedure increasingly performed by dental professionals for being less invasive and simple. The present study aimed at analyzing the effectiveness of internal tooth whitening through different bleaching agents and techniques: mediated (walking bleach), immediate (outside-inside) and mixed. The methodology was based on the use of electronic databases BVS (Medline, Lilacs, BBO), Cochrane Library and Scopus, in the period from 2011 to 2021, using the descriptive: Tooth bleaching OR tooth discoloration OR tooth bleaching agents OR peroxides AND tooth nonvital. The different types of bleaching agents, concentration, technique used, time of use and results observed after treatment were analyzed. Included were clinical trials, cohorts, case-control studies and case reports. Systematic reviews were excluded. As a result of this investigation, the long-term mediated technique was as effective as the immediate technique, and the bleaching agents sodium perborate, carbamide peroxide, and hydrogen peroxide, even at different concentrations, were equally effective, and sodium perborate was the bleaching agent of first choice because of its efficiency and non-compromise to the tooth structure.