Effectiveness of peracetic acid in rapid disinfection of gutta-percha and Resilon cones exposed to Enterococcus faecalis

Renata Ximenes Lins, Marilia Fagury Videira Marceliano-Alves, Bruna Bernini Lind, Shirley Souza Pinto, Raphael Hirata Júnior.

Objective: The aim of this study was to assess effectiveness of 2% peracetic acid in rapid disinfection of gutta-percha and Resilon cones compared to sodium hypochlorite and chlorhexidine. Methods: Guttapercha and Resilon cones were immersed during five minutes for contamination with Enterococcus faecalis suspension. Subsequently, they were divided into groups (n = 10) to test the disinfection protocol: 2% peracetic acid (one and three minutes); 5.25% NaOCl (one and three minutes); 2% chlorhexidine (one and three minutes). After the tested protocols were carried out, the cones were transferred to test tubes containing EnterococcoselTM agar, and then kept in an oven at 37°C for 48 hours. After the observation period, tubes were assessed and those presenting turbidity of the medium were considered positive. Results: Results demonstrated that 2% peracetic acid seems to be effective in decontaminating both types of cone, similarly to 5.25% NaOCl. Conversely, 2% chlorhexidine was less effective (p < 0.05). Conclusion: Both solutions, 2% peracetic acid and 5.25% NaOCl, were effective in decontaminating gutta-percha and Resilon cones at the tested times.

Keywords: Decontamination. Enterococcus faecalis. Gutta-percha.

How to cite: Lins RX, Marceliano-Alves MFV, Lind BB, Pinto SS, Hirata Júnior R. Effectiveness of peracetic acid in rapid disinfection of gutta-percha and Resilon cones exposed to Enterococcus faecalis. Dental Press Endod. 2017 Jan-Apr;7(1):85-91. DOI: http://dx.doi.org/10.14436/2358-2545.7.1.085-091.oar

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