[Validation of the choice of antibacterial agents for treating periodontitis].

Sensitivity of microflora sampled from the dental root channels of periodontitis patients to chlorhexidine, dioxidine, quinosol, Metrodgile was investigated. Chlorhexidine and dioxidine were shown to act predominantly on gram-positive and gram-negative bacteria, Metrodgile most active against anaerobic flora. High antibacterial activity of quinosol and chlorhexidine was combined with their pronounced cytotoxic effects.