Inhibition of Candida albicans and Mixed Salivary Bacterial Biofilms on Antimicrobial Loaded Phosphated Poly(methyl methacrylate)

Authors

Andrew R. Dentino, Marquette UniversityFollow
Dong Hwa Lee, Marquette University
Kelley Dentino, Marquette University
Arndt Guentsch, Marquette UniversityFollow
Mohammadreza Tahriri, Norfolk State UniversityFollow

Document Type

Article

Publication Date

2021

Publisher

MDPI

Source Publication

Antibiotics

Source ISSN

2079-6382

Abstract

Biofilms play a crucial role in the development of Candida-associated denture stomatitis. Inhibition of microbial adhesion to poly(methyl methacrylate) (PMMA) and phosphate containing PMMA has been examined in this work. C. albicans and mixed salivary microbial biofilms were compared on naked and salivary pre-conditioned PMMA surfaces in the presence or absence of antimicrobials (Cetylpyridinium chloride [CPC], KSL-W, Histatin 5 [His 5]). Polymers with varying amounts of phosphate (0–25%) were tested using four C. albicans oral isolates as well as mixed salivary bacteria and 24 h biofilms were assessed for metabolic activity and confirmed using Live/Dead staining and confocal microscopy. Biofilm metabolism was reduced as phosphate density increased (15%: p = 0.004; 25%: p = 0.001). Loading of CPC on 15% phosphated disks showed a substantial decrease (p = 0.001) in biofilm metabolism in the presence or absence of a salivary pellicle. Salivary pellicle on uncharged PMMA enhanced the antimicrobial activity of CPC only. CPC also demonstrated remarkable antimicrobial activity on mixed salivary bacterial biofilms under different conditions displaying the potent efficacy of CPC (350 µg/mL) when combined with an artificial protein pellicle (Biotene half strength).

Comments

Published version. Antibiotics, Vol. 10, No. 4 (2021): 427. DOI. © 2021 MDPI. Used with permission.

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Recommended Citation

Dentino, Andrew R.; Lee, Dong Hwa; Dentino, Kelley; Guentsch, Arndt; and Tahriri, Mohammadreza, "Inhibition of Candida albicans and Mixed Salivary Bacterial Biofilms on Antimicrobial Loaded Phosphated Poly(methyl methacrylate)" (2021). School of Dentistry Faculty Research and Publications. 456.
https://epublications.marquette.edu/dentistry_fac/456