Abstract

ROCHA, Eveline Angélica Lira de Souza Sales et al. Evaluating the effectiveness of various chemical substances in decontamination of gutta-percha cones. Odontol. Clín.-Cient. (Online) [online]. 2013, vol.12, n.1, pp. 35-38. ISSN 1677-3888.

The efficacy of different chemical substances was evaluated in different immersion times for disinfection of gutta-percha cones previously contaminated with Enterococcus faecalis. 90 gutta-percha cones # 40 of sealed packages were used, which have suffered contamination with strains for 1 minute and 24 hours. They were submerged in 70% alcohol, 0.12% Chlorhexidine, 2% Chlorhexidine, 1% Sodium Hypochlorite, 2% Sodium Hypochlorite, 2.5% sodium hypochlorite and saline solution, remaining at 1, 2, 3 , 4 and 5 minutes. The cones were introduced in test tubes containing 5ml of BHI broth and taken to a bacteriological incubator. The decontamination evaluation was performed by visual analysis of culture medium turbidity. The group with cones disinfected with saline solution at all times was considered the positive control. The other solutions were effective if used for at least 1 minute. The results were the same for gutta-percha cones immersed in the microbial suspension for 1 min or 24 hours. It is concluded that it is safer the prior decontamination of the cones for at least one minute, so that it can be prevented the treatment failure

Keywords : Decontamination; Gutta-percha; Microbiological Analysis.