Suscetibilidade do E. faecalis e S.aureus a vários antimicrobianos
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Data
2012
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Resumo
Objective: It was assess the antibiotic susceptibility of E. fae-
calis and S. aureus by using agar diffusion test. Material and Me-
thods: For the experiment the following antibiotics were used:
amoxicillin+clavulanic acid; amoxicillin; azithromycin, cephale-
xin, ciprofloxacin, erythromycin, clindamycin, penicillin G, oxa-
cillin and vancomycin. Twenty Petri plates with 20 mL of BHIA
inoculated with 0.1 mL of bacterial infusion were sowed by steri-
lized swabs. A hundred antibiotic discs were placed on BHIA pla-
tes (n=10, for each group). The plates were maintained for 1 hour
at room temperature and then incubated at 37oC for 48 hours. After that, the diameters of bacterial inhibition were measured, indi-
cating the efficacy or not efficacy of the antibiotics, with the use of
a digital caliper. Results: Among the products tested, the oxacillin
did not promote inhibition zone only for E. faecalis. The amoxy-
cillin associated with clavulanic acid, amoxicillin and penicillin G
showed activity mainly against S. aureus. Conclusion: The most
antimicrobial agents evaluated demonstrated effectiveness on
microbial indicators, with average values of the inhibition zone
between 15 and 35 millimeters, except oxacillin for the E. faecalis.
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Palavras-chave
Infecção endodôntica, Atividade antimicrobiana, E. faecalis, S. aureus, Endodontic infection, Antimicrobial activity, Enterococcus faecalis, Staphylococcus aureus
Citação
ALVES, Regis A. A. et al. Suscetibilidade do E. faecalis e S.aureus a vários antimicrobianos. Robrac: revista odontologica do Brasil Central, Goiânia, v. 21, n. 56, p. 426-429, 2012.