Interferência do tempo e tipo de antioxidante utilizado no sistema adesivo após clareamento dental: revisão sistemática

Abstract

This research aimed to carry out a systematic literature review to identify how the bond strength of restorations changes after external tooth whitening, followed by the use of antioxidant agents. Among the specific objectives, it was verified: how the use of different antioxidant agents could help adhesion, after tooth whitening, whether natural or artificial antioxidants. For this purpose, searches were carried out in the following electronic databases VHL (Medline, Lilacs, BBO), Cochrane Library and Scopus, for a retroactive period of 10 years, 2010 to 2020. The descriptive terms used for the search strategy were; antioxidant OR dental bleaching AND shear bond strength as well as mesh and related entry terms.The following inclusion criteria were considered: clinical trial articles, cohorts and case-control studies. However, works classified as: systematic reviews and case reports were excluded. In the selected articles, information was collected such as: author, year of publication, study design or outline and main results. It was observed that 90% of the studies obtained significant results regarding the increase in bond strength using antioxidants prior to the restorative procedure in cases of newly whitened teeth, noting that the majority used as an artificial antioxidant the ascorbate of 10% sodium In most studies, antioxidants had no effect on bond strength when 35% hydrogen peroxide was used as a bleaching agent. We can conclude that several antioxidants have been shown to be effective in the recovery of bond strength, especially sodium ascorbate, shown to have significant results for bond strength after its application. However, clinical studies are needed to confirm these findings, as the results of in vitro, ex vivo and in situ studies have limitations that do not simulate the clinical reality.