What are denture-related biofilms and their clinical significance?

• A. Multi-species biofilms on dentures including Candida albicans; they cause denture-associated stomatitis and cleaning resistance
• B. Biofilms on natural teeth only
• C. Biofilms only on implants
• D. No clinical significance

Answer: (A)

Denture-related biofilms are communities of microbes that attach to denture surfaces and live within a protective extracellular matrix. On dentures you’ll typically find multiple species, often including Candida albicans alongside bacteria. The acrylic surface and its micro-topography provide niches that favor adhesion and persistence, especially when denture hygiene is poor or salivary defenses are reduced. Clinically, these biofilms matter because they can trigger inflammation of the mucosa beneath the denture, known as denture-associated stomatitis, a common problem for denture wearers. The biofilm lifestyle also makes the organisms harder to eradicate with simple rinses, since the matrix and close-knit microcolonies shield them from cleaners. Effective management usually involves mechanical cleaning plus appropriate disinfection, and occasionally antifungal treatment, to reduce both the biofilm and the associated mucosal inflammation.