Assessment of Antimicrobial Susceptibility of <i>Enterococcus Faecalis</i> Isolated From Chronic Periodontitis in Biofilm Versus Planktonic Phase

Abstract

The E. faecalis strains of chronic periodontitis exhibited weak biofilm formation ability at the early stage. Over 50% of the strains were resistant to tetracycline, and a few strains were highly resistant to erythromycin or gentamicin. E. faecalis cells in biofilm were hardly eradicated by most of the agents, even in high concentrations. Triclosan was effective in inhibiting E. faecalis growth in both biofilm and planktonic phase.