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.
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.
Authors: Lin Wang; Xianju Xie; Michael D Weir; Ashraf F Fouad; Liang Zhao; Hockin H K Xu Journal: J Mater Sci Mater Med Date: 2016-10-03 Impact factor: 3.896
Authors: W Krzyściak; A Jurczak; D Kościelniak; B Bystrowska; A Skalniak Journal: Eur J Clin Microbiol Infect Dis Date: 2013-10-24 Impact factor: 3.267
Authors: Markus Reise; Michael Gottschaldt; Carina Matz; Andrea Völpel; Klaus D Jandt; Ulrich S Schubert; Bernd W Sigusch Journal: BMC Oral Health Date: 2016-03-23 Impact factor: 2.757
Authors: K Johani; M Malone; S O Jensen; H G Dickson; I B Gosbell; H Hu; Q Yang; G Schultz; K Vickery Journal: J Antimicrob Chemother Date: 2018-02-01 Impact factor: 5.790