Análise do comportamento biomecânico de pinos de fibra de vidro adaptados anatomicamente: uma revisão sistemática

Abstract

Teeth with high degree of coronary compromise generally require retaining pins to be placed inside the canal to support the subsequent restoration. Currently, there are several types of post, such as metallic and fiberglass posts, commonly used due to their aesthetics and similar elastic modulus to dentin. However, as it is prefabricated, the fiberglass post does not always adapt correctly to the root canal, making the cementation line very thick. Thus, anatomized fiberglass posts emerged, which are a new option for rehabilitations in which the root canal is enlarged. The technique consists in modeling the post according to the anatomy of the canal, transforming the prefabricated pins into individualized posts. The aim of this study is to evaluate, through the existing bibliography, the biomechanical behavior of anatomically adapted fiberglass posts with regard to fracture and displacement, in addition to comparing their effectiveness among the other available posts in terms of stability and longevity. Scientific papers from PubMed, Scielo and Google Scholar databases, as well as books and dissertations published between 2007 and 2022, were searched. As a result, was observed that anatomized fiberglass posts is the most suitable for enlarged teeth with low remaining coronary, presenting less fracture, as well as greater resistance. In addition, was found an interference of eugenol-based cement for pins cementation with resin cement, and a better adhesion with the combination of epoxy resin-based endodontic cement and resin cement.