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BIRCK, Djenifer Regina; MIYAGAKI, Daniela Cristina; CORRALO, Daniela Jorge  e  TONIAL, Fabiana. In vitro study on the effectiveness of disinfectants for cleaning gutta-percha cones. RFO UPF [online]. 2016, vol.21, n.2, pp. 208-212. ISSN 1413-4012.

Introduction: For a successful endodontic treatment, many steps should be followed, and similarly, there should be a strict scheme for maximum reduction of microorganisms present, as well as for preventing their reintroduction. The canal filler material mostly used worldwide is gutta-percha, and since it may not be sterilized, it should be disinfected to prevent the recontamination of root canal. Objective: This study proposed to assess the biocidal capacity of three solutions: 5.25% sodium hypochlorite, 2% chlorhexidine, and 2% peracetic acid, in a period of one minute, against gutta-percha cones previously contaminated with Enterococcus faecalis. Method: Eighty cones were used, divided into 4 groups equally (n=10). A disinfectant solution was used for each group except for group one, which was washed only once with sterile distilled water. Results: The results of this assessment indicated that solutions of peracetic acid and chlorhexidine were 100% effective, while hypochlorite achieved 95% of effectiveness. Distilled water was completely ineffective. Conclusion: It was concluded that all disinfectant solutions tested in this research were effective on the decontamination of gutta-percha cones.

Palavras-chave : Peracetic acid.; Chlorhexidine.; Disinfection.; Gutta-percha.; Sodium hypochlorite..

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