Efficacy of dental unit waterlines disinfectants on a polymicrobial biofilm

Water Research
Damien CostaChristine Imbert

Abstract

Due to their high surface-volume ratio, their laminar flow and frequent stagnation periods, dental unit waterlines (DUWL) foster the attachment of microorganisms and the development of biofilm, resulting in the continuous contamination of the outlet water from dental units; this contamination may be responsible for a potential risk of infection due to the exposure of patients and medical staff to droplet inhalation or splashed water. In this study, the anti-biofilm activity of three disinfectants recommended by dental unit manufacturers -Calbenium(©), Oxygenal 6(©) and Sterispray(©) - was evaluated. A dynamic model simulating DUWL conditions was developed and polymicrobial biofilms containing bacteria (Pseudomonas aeruginosa), fungi (Candida albicans) and Free Living Amoeba (FLA: Vermamoeba vermiformis) were allowed to form. The ability of disinfectants to reduce biofilm formation or to eradicate an already formed biofilm was evaluated. Results showed the various effects of the tested disinfectants according to their composition, concentration and the targeted species. V. vermiformis was resistant to disinfectants, regardless of the tested concentrations and the concentrations recommended by manufacturers were not the most appr...Continue Reading

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Jun 15, 2015·Water Research·Damien CostaChristine Imbert

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Citations

Sep 16, 2017·Pathogens and Disease·Damien CostaChristine Imbert
Apr 16, 2020·International Journal of Environmental Research and Public Health·Alexandre BaudetCéline Clément
Jul 12, 2017·TheScientificWorldJournal·Jaqueline Lopes DamascenoCarlos Henrique Gomes Martins
Jun 3, 2021·International Journal of Environmental Research and Public Health·Damien Offner, Anne-Marie Musset
Jul 6, 2021·Frontiers in Cellular and Infection Microbiology·Cancan FanYongbiao Huo

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