Lookup NU author(s): Dr Christopher Nile
This is the authors' accepted manuscript of an article that has been published in its final definitive form by Microbiology Society, 2017.
For re-use rights please refer to the publisher's terms and conditions.
© 2017 The Authors.Approximately 20% of the UK population wear some form of denture prosthesis, resulting in denture stomatitis in half of these individuals. Candida albicans is primarily attributed as the causative agent, due to its biofilm -forming ability. Recently, there has been increasing evidence of C. albicans biofilm heterogeneity and the negative impact it can have clinically; however, this phenomenon has yet to be studied in relation to denture isolates. The aims of this study were to evaluate C. albicans biofilm formation of clinical denture isolates in a denture environment and to assess antimicrobial activity of common denture cleansers against these tenacious communities. C. albicans isolated from dentures of healthy and diseased individuals was quantified using real-time PCR and biofilm biomass assessed using crystal violet. Biofilm development on the denture substratum poly(methyl methacrylate), Molloplast B and Ufi-gel was determined. Biofilm formation was assessed using metabolic and biomass stains, following treatment with denture hygiene products. Although C. albicans was detected in greater quantities in diseased individuals, it was not associated with increased biofilm biomass. Denture substrata were shown to influence biofilm biomass, with poly(methyl methacrylate) providing the most suitable environment for C. albicans to reside. Of all denture hygiene products tested, Milton had the most effective antimicrobial activity, reducing biofilm biomass and viability the greatest. Overall, our results highlight the complex nature of denturerelated disease, and disease development cannot always be attributed to a sole cause. It is the distinct combination of various factors that ultimately determines the pathogenic outcome.
Author(s): O'Donnell LE, Alalwan HKA, Kean R, Calvert G, Nile CJ, Lappin DF, Robertson D, Williams C, Ramage G, Sherry L
Publication type: Article
Publication status: Published
Journal: Journal of Medical Microbiology
Online publication date: 01/01/2017
Acceptance date: 28/12/2017
Date deposited: 24/02/2020
ISSN (print): 0022-2615
ISSN (electronic): 1473-5644
Publisher: Microbiology Society
PubMed id: 28032543
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