Int J Stomatol

Inter J Stomatol ›› 2010, Vol. 37 ›› Issue (02): 157-157～160.doi: 10.3969/j.issn.1673-5749.2010.02.009

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Effects of various methods for cleaning Candida albicans biofilm formed on dentur

LI Li-na1, Young Kim1, SHU Yi2, Renate Lux1, TIAN Min3, Prasad Adusumilli4, Zvi Loewy4, GUO Hong3

  1. 1. School of Dentistry, University of California, Los Angeles 90095, America
    2
  • Received:2010-01-11 Revised:2010-03-01 Online:2010-03-20 Published:2010-03-20
  • Contact: ZHOU Xue-dong

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Abstract: Objective To evaluate the effect of different denture hygiene methods against Candida albicans（C. albicans） biofilms formed on acrylic resin denture material. Methods The following methods were used to remove the C.albicans biofilms formed on denture surfaces: 1）Chemical（immersion in solutions）; 2）Mechanical（brushing）; 3） A combination of chemical and mechanical treatments（immersion followed by brushing）. The residual biofilms were mechanically disrupted after a re-growth period of 0, 6, 24 h, respectively, followed by plating and colony forming unit enumeration. Results The level of mechanical treatments for reducing viable biofilm cell counts varied among different brands of toothpastes. The chemical treatment adopted in this study did not show any reduction in cell viability. The combination chemical and mechanical
removal treatment with Polident exhibited the most dramatic reduction, with no detectable viable cells even after a 24 h ofre-growth period. Conclusion The denture hygiene methods adopted in this study exhibited varying efficacies and durations of C. albicans biofilm removal from acrylic denture material with the procedure recommended for Polident displaying the best killing and most sustainable effect.

Key words: oral hygiene, denture cleanse, Candida albicans, biofilm, denture stomatitis

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