Agentes antioxidantes para potencializar a adesão de restaurações após clareamento dental: uma revisão de literatura

Abstract

The new global aesthetic standard in dentistry is based on white, well contoured and perfectly aligned teeth. This determines a growing search by the population for aesthetic procedures and, at the same time, any individual alteration of this “pattern” can cause, in some people, serious consequences for the social image. In this context, tooth whitening is a very common procedure in dentistry that quickly and at a relatively moderate cost provides the whitening of vital teeth or not. However, reports in the literature indicate that the oxygen released in chemical reactions during bleaching has an inhibiting effect on the polymerization of composite resins, so one of the alternatives of studies carried out is the use of antioxidant agents that act in this process. In view of this, the aim of this study was to review studies in the literature that point to clinical alternatives to the use of conventional antioxidant agents that minimize the effects arising from tooth bleaching on the adhesion of restorations. For this, an active search was carried out in the literature for antioxidant agents used as clinical alternatives that minimize the effects of tooth bleaching on the adhesion of restorations. A search was carried out in the databases of the Virtual Health Library, Scielo and PUBMED, in which 11 articles were selected, after applying the inclusion and exclusion criteria and full text available. Studies that did not fit the main subject and those that did not have clinical and scientific relevance were excluded from the review. As a result, the most commonly used antioxidant is 10% sodium ascorbate as it is most appropriate for improving bond strength. However, its use must be carefully evaluated because, according to the applied technique, it can influence the longevity of the restoration. Research points to encouraging results with natural alternatives such as grape seed oil and green tea, which have demonstrated effectiveness in the bond strength of the restoration to the substrate after bleaching. However, more studies are needed in order to discover new antioxidant substances defining a safe protocol for use. In view of the absence of controlled clinical studies, its applications in daily practice should still be recommended with caution.