SO, Marcus Vinícius Reis et al. Antimicrobial in vitro activity of a propolis suspension against Enterococcus faecalis. RFO UPF []. 2011, 16, 3, pp. 277-281. ISSN 1413-4012.

Objective: the objective of this study is to evaluate in vitro the antimicrobial activity of 5% and 10% propolis suspension against Enterococcus faecalis (ATCC 29212). Methods: The agar diffusion test and the disc method were used for the following substances: (n = 19) propolis dry extract at 5% and 10%, chlorhexidine (positive control) and propylene glycol (negative control). The inhibition halos were measured after 24 hours. Results: Statistically significant differences were observed through the ANOVA (1 via) and Tukey test with 5% of significance level (p < 0.001). The chlorhexidine group showed bacterial growth inhibition halos with average size of 6.631mm, while propolis at 5% and 10% and the propylene glycol groups did not develop halos. Conclusion: The propolis extract suspension at 5% and 10% in propylene glycol did not present antimicrobial activity in vitro against Enterococcus faecalis.

: Propolis.; Enterococcus faecalis.; Endodontics..