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<0,05).
Result
After the 14-day period, the group that presented the highest bacterial infiltration was the control group, which did not contain any type of intrarradicular retainer, followed by G1-FV (group of contained fiber glass post) and G2- FC (group containing carbon fiber reinforced post). Results of the smallest degree of bacterial recovery was found in the G3-Ni-Cr and G4-Cu-Al groups, which contained metallic intracanal retainers by nickel-chromium and copper-aluminum alloys respectively.
Conclusion
The intracanal retainers evaluated here presented different antimicrobial effects. Thus, the use of intracanal post with better antimicrobial results, favors greater chances of success in rehabilitation treatments.
Descriptors:
Endodontics; post and core technique; dental leakage; root canal obturation
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