Javiera Sobarzo; Tamara Vargas; Patricio Ruiz & Isabel Riquelme


Factors such as the type of composite resin and matrix system are key to achieving an adequate proximal contact tightness, which can determine the success of a class II restoration.To compare the proximal contact tightness obtained in class II resin restorations, when different consistencies of composite resins and matrix systems are used, on in vitro studies. The systematic review was carried out according to the PRISMA Statement guidelines. The studies were selected through a search strategy for each electronic database (MEDLINE/PubMed, Scopus, Web of Science and EBSCO host). In each selected article, the following were tabulated: author/year, sample size, tooth used and cavity preparation, type of composite resin, type of matrix system and proximal contact tightness (result measured in Newton). The methodological quality was analyzed using a modified guideline for in vitro studies. Of 90 articles, a total of 5 articles met the selection criteria and were included. Of these five articles, only two articles studied the influence of the consistency of the composite resin and the matrix systems simultaneously. One of the articles was a low risk of bias, two of medium and two of high. The same proximal contact tightness is not obtained between different consistencies of composite resin and different matrix systems, since the highest values were obtained when using sectional matrices combined with a separation ring and composite resins of higher viscosity.

KEY WORDS: composite, resin, composite resin, proximal contact tightness, proximal contact strength.

How to cite this article

SOBARZO, J.; VARGAS, T.; RUIZ, P. & RIQUELME, I. Proximal contact tightness in class II resins. Systematic review. Int. J. Odontostomat. 15(4):882-887, 2021.