The Effect of Residual Food Stain on Candida Albicans Colonisation of Denture Acrylics

Author Info

Ann Smith David Williams David Bradshaw Paul Milward Sarah Al Kutubi Wendy Rowe

Corresponding Author

Ann Smith
Faculty of Health and Applied Sciences, Glenside Campus, University West of England, Bristol, UK

A B S T R A C T

Objectives: In the UK, 19% of adults wear dentures. Failure to keep a denture clean can lead to staining from foods, along with subsequent colonisation of the denture and associated mucosa by microorganisms, particularly Candida albicans. This colonisation can potentially lead to chronic erythematous candidosis and other oral infections. This study investigated the association between staining of denture acrylics by different food types and subsequent C. albicans colonisation. Materials and Methods: Chemically polymerised acrylic specimens were produced and stained for 14 days with six different combinations of food stains. The level of acrylic staining was determined spectrophotometrically. Specimens were then incubated in Sabouraud-dextrose broth (SAB) or SAB inoculated with Candida albicans. Confocal laser scanning microscopy coupled with propidium iodide staining of C. albicans was used to determine the extent of C. albicans colonisation to these acrylics. Results analysed descriptively and by one-way analysis of variance (ANOVA), one sample student t-test, and Dunnett’s test. Results: Acrylics in Group 4 (stained with spices, tomato puree, acai berry juice and sunflower oil) exhibited highest staining but had low C. albicans colonisation. Highest C. albicans colonisation occurred with Group 5 (sunflower oil) stained acrylics. The unstained control acrylic group had lowest colonisation. Conclusion: This study demonstrated that staining acrylics with certain foods promoted C. albicans colonisation, but this was not associated with level of visual staining. Further research is required to determine the precise mechanism(s) by which residual food stains promote candidal colonisation on denture acrylics. This knowledge may then be used by dental professionals to advise patients on improving denture hygiene to improve not only denture aesthetics but also minimise Candida biofilms.

Article Info

Article Type

Research Article

Publication history

Received: Mon 06, Apr 2020
Accepted: Mon 04, May 2020
Published: Fri 29, May 2020

Copyright

© 2023 Ann Smith. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Hosting by Science Repository.
DOI: 10.31487/j.DOBCR.2020.02.06