Chlorhexidine--pharmaco-biological activity and application.
OBJECTIVE
Chlorhexidine (CHX) is one of the most widely used antiseptic, especially in dentistry. At low concentrations CHX is bacteriostatic and at high concentrations acts bactericidal causing cell death by cytolysis. In this study, we performed a systematic review of pharmaco-biological activity and application of CHX.


METHODS
Articles for inclusion in this review were retrieved from online databases PubMed/Medline. The selected papers were included in the present manuscript according to their relevance for the topic.


RESULTS
Totally 75 papers were enrolled in this research. CHX has strong biocidal activity against Gram-positive bacteria and weaker activity against Gram-negative bacteria. It is also active against yeasts, some dermatophytes and some lipophilic viruses. The most widely application CHX has found in dentistry and antisepsis. Numerous studies have confirmed the beneficial effects of CHX in reducing of plaque accumulation, in tooth caries, gingivitis, periodontitis and in alveolar osteitis. Unfortunately, CHX exhibits cytotoxic activity on human cells, can cause colorization of teeth and fillings, and its activity depends on the pH of the environment and the presence of organic substances.


CONCLUSIONS
CHX play a valuable role in the dentistry and antisepsis. However, it can also cause side effects, limiting its application time.
Department of Medical Microbiology, University of Medical Sciences in Poznań, Poland. tkarpin@interia.pl.
T M
TM
Karpiński
A K
AK
Szkaradkiewicz
D000891:Anti-Infective Agents, Local / Q000008:administration & dosage* / Q000493:pharmacokinetics*; D000985:Antisepsis / Q000379:methods; D001682:Biological Availability; D002710:Chlorhexidine / Q000008:administration & dosage* / Q000493:pharmacokinetics*; D003773:Dental Plaque / Q000175:diagnosis / Q000378:metabolism / Q000517:prevention & control*; D006801:Humans
D000891:Anti-Infective Agents, Local; D002710:Chlorhexidine