Evaluation of Matrix Systems on the Proximal Contact of Class II Composite Restorations: A Systematic Review.

Abstract

When restoring proximal surfaces in posterior teeth, dentists frequently encounter the difficulty of reproducing the proximal contact that is naturally present in unrestored teeth. In order to guarantee the durability of restorations made from class II composite resin, it is imperative that both functional and aesthetic requirements are met. This entails the choice of the matrix system that replicates the optimal proximal contact subsequent to the insertion of restorations made of class II composite resin. The objective of this systematic review is to assemble current research conducted on the various matrix systems utilized in class II composite restorations and assess their impact on the pre-existing composite proximal contact. Three examiners conducted an independent electronic search utilizing the subsequent databases: Web of Science, Cochrane Library, Scopus, PubMed, and Embase. Publications on proximal contact in class II composite restorations were compiled from the time of their inception until August 2022, in accordance with predetermined inclusion and exclusion criteria. The methodological quality assessment was conducted utilizing the Effective Public Health Practice Project (EPHPP) instrument. Among the six studies that were included, it was observed that the sectional matrix system generated greater proximal contact tightness than the circumferential matrix system (Tofflemire). However, no significant distinction was found between the metal and polyester matrix systems. In contrast to alternative circumferential matrix systems, the utilization of a sectional matrix system yields a statistically significant improvement in the optimum proximal contact of class II composite restorations, according to the studies.