Evaluation of antibacterial activity of different intraradicular retainers against Enterococcus faecalis: in vitro evaluation

Abstract Introduction The ultimate goal of endodontic treatment is the eradication of microorganism from the root canal space, or at least their reduction to levels compatible with periradicular tissue health since after endodontic treatment colonies of residual microorganisms may be present in the dentinal tubules and cementum. Objective To evaluate the antibacterial activity of different fiber posts in the root canal system of bovine teeth. Material and method Here, 90 uniradicular bovine teeth were randomly assigned after complete endodontic therapy. The samples were unthreaded, as well as had their conduits prepared for the cementation of the intracanal retainers. Subsequently, the teeth were exposed to Enterococcus faecalis by means of the assembly of a device, which allowed bacterial infiltration. The data of the amount by colony forming unit (CFU) per ml assay were analyzed by one-way ANOVA followed by Tukey’s HSD post hoc test (p