Influência de soluções neutralizadoras na adesão de pinos de fibra de vidro a dentes submetidos ao clareamento interno: revisão integrativa

Abstract

It is known that the use of hydrogen peroxide for internal whitening decreases the bond strength of the tooth to the fiberglass post, as this integrative review aimed to understand the influence of the use of antioxidant agents, such as sodium ascorbate and alpha-tocopherol, in this type of bleaching for final adhesion of adhesively cemented posts after the procedure. The search was carried out in the Pubmed, LILACS, Periódico Capes databases, using the search criteria and inclusion criteria from 2000 to 2021. The texts were read in full and, thus, divided by themes: hydrogen peroxide and neutralizers. Eighteen studies (range 2008 to 2021) were found, many with different approaches and ways of applying neutralizing agents, with some showing application benefits, while others did not. A possible explanation for these divergent results may be due to the different forms of commercialization of antioxidants (gel or solution) and the methodology used to evaluate the bond strength. It is concluded that more information is needed to establish an effective protocol, where efficiency time, antioxidant activity, viscosity (solution or gel) can be better understood. The neutralizing efficacy of sodium ascorbate and alpha- cotopherol is still controversial in the literature, and further studies are needed comparing the effect of these antioxidants in vivo.