The efficacy of povidone-iodine products against periodontopathic bacteria

Taneaki Nakagawa, Yasuo Hosaka, Kazuyuki Ishihara, Toru Hiraishi, Soh Sato, Tomohisa Ogawa, Kyuichi Kamoi

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


A total of 8 strains of 6 bacterial species, Porphyromonas gingivalis ATCC33277 and TDC286, Actinobacillus actinomycetemcomitans ATCC29523 and JP2, Fusobacterium nucleatum No. 2, Tannerella forsythensis ATCC43937, Prevotella intermedia ATCC25611 and Streptococcus anginosus ATCC33397, were treated with povidone-iodine (PVP-I) gargle (PVP-I: 0.47 and 0.23% w/v) or chlorhexidine gluconate (CHG) gargle (CHG: 0.002% w/v) for 15, 30 or 60 s, after which they were inoculated into various media, cultured and counted for residual bacteria. At both concentrations, PVP-I gargle reduced the viable cell count of all 8 bacterial strains to below the measurable limit within 15 s. By contrast, there were more than 1,000 viable colonies 60 s following treatment with the CHG gargle. The results demonstrate that povidone-iodine gargle has rapid bactericidal activity against the causative bacteria of periodontal disease.

Original languageEnglish
Pages (from-to)109-111
Number of pages3
Issue numberSUPPL. 1
Publication statusPublished - 2006 Feb 1


  • Chlorhexidine
  • Periodontopathic bacteria
  • Povidone-iodine

ASJC Scopus subject areas

  • Dermatology


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