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Antibacterial activity of povidone-iodine against an artificial biofilm of Porphyromonas gingivalis and Fusobacterium nucleatum.

Abstract：

OBJECTIVE:To investigate the antibacterial activity of povidone-iodine (PVP-I) on an artificial dual species biofilm of periodontal pathogens. DESIGN:Porphyromonas gingivalis or Fusobacterium nucleatum grown in broth culture was inoculated on polycarbonate membrane (PCM) tissue culture inserts. After incubation for 72 h, PVP-I solutions were applied to the biofilm for the time period ranging from 0.5 to 5 min. After addition of a deactivator, each PCM was removed and the biofilm on the PCM was serially diluted and plated on blood agar plates and cultured anaerobically for 7 days. Then viable bacteria were enumerated. RESULTS:In the dual species biofilm model, F. nucleatum showed an approximately 200-fold increase in viable counts when compared with mono-microbial biofilm. In dual species biofilm, PVP-I with concentration equal to or greater than 2% was required to significantly reduce P. gingivalis and F. nucleatum. When the contact time of PVP-I was increased to 1 min or greater, no difference in antibacterial activity of PVP-I was observed in any concentration. CONCLUSION:These results suggest that 30s application of 2% PVP-I would be effective in suppressing both P. gingivalis and F. nucleatum in dual-species biofilm, and this provides clinical implication for the control of subgingival biofilm.

journal_name

Arch Oral Biol

journal_title

Archives of oral biology

authors

Hosaka Y,Saito A,Maeda R,Fukaya C,Morikawa S,Makino A,Ishihara K,Nakagawa T

doi

10.1016/j.archoralbio.2011.09.005

subject

Has Abstract

pub_date

2012-04-01 00:00:00

pages

364-8

issue

4

eissn

0003-9969

issn

1879-1506

pii

S0003-9969(11)00284-6

journal_volume

57

pub_type

杂志文章

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