Denture stomatitis: a role for Candida biofilms.

Area of Science:

• Oral Microbiology
• Biomaterials Science
• Mycology

Background:

• Denture stomatitis is a common oral condition, often associated with microbial factors.
• The role of Candida species, particularly Candida albicans, in denture stomatitis is well-established.
• The formation and impact of Candida biofilms on denture materials require further investigation.

Purpose of the Study:

• To evaluate the contribution of Candida biofilms to the development of denture stomatitis.
• To analyze the adherence and structural characteristics of Candida biofilms on denture acrylic.
• To assess the in vitro biofilm-forming capacity of clinical Candida isolates and their antifungal resistance.

Main Methods:

• Scanning electron microscopy (SEM) was used to visualize Candida biofilms on denture acrylic samples from patients with denture stomatitis.
• Oral swabs and rinses were collected to isolate and identify Candida albicans.
• In vitro experiments assessed biofilm development kinetics and antifungal susceptibility of clinical isolates.

Main Results:

• Candida biofilms were visualized on denture acrylic, adhering to surface imperfections.
• Clinical Candida albicans isolates formed biofilms in vitro, with varying formation extents.
• Resulting biofilms demonstrated increased resistance to antifungal agents.
• Conditioning films (saliva, serum) enhanced initial adherence but minimally affected overall biofilm formation.

Conclusions:

• Candida biofilms are implicated in the etiology of denture stomatitis.
• The adherence and resistance properties of these biofilms contribute to the pathogenesis of the condition.
• Understanding biofilm dynamics is crucial for managing denture stomatitis.