Denture stomatitis is a chronic inflammatory condition of the oral mucosa underlying a removable denture, most commonly presenting as erythema of the hard palate in direct contact with the denture base. It affects an estimated 50–70% of denture wearers and is strongly linked to Candida albicans overgrowth, making it the most prevalent form of oral candidiasis encountered in this population.
Common Causes
Multiple factors typically act together to create the conditions for denture stomatitis to develop:
- Poor denture hygiene: Biofilm accumulation on the fitting surface provides a persistent reservoir for Candida colonization.
- Continuous denture wear: Sleeping in removable dentures prevents mucosal tissue from recovering and reduces the cleansing effect of saliva.
- Ill-fitting dentures: Mechanical trauma from an unstable prosthesis disrupts the mucosal barrier and promotes inflammation.
- Xerostomia: Reduced salivary flow diminishes the mouth’s natural antimicrobial defenses, allowing fungal overgrowth to take hold.
- Systemic factors: Immunosuppression, uncontrolled diabetes, and broad-spectrum antibiotic therapy significantly increase susceptibility.
Classification and Clinical Features
Newton’s classification divides denture stomatitis into three types based on severity. Type I presents as localized pinpoint hyperemia; Type II as generalized diffuse erythema covering the full denture-bearing mucosa; and Type III — sometimes called inflammatory papillary hyperplasia — displays granular or nodular tissue changes that may require surgical correction before a new prosthesis can be successfully fabricated. Notably, patients frequently report little or no discomfort, which makes routine clinical examination essential for timely detection. Angular cheilitis at the corners of the mouth is a common concurrent finding and can serve as an additional diagnostic clue.
Management
Effective treatment combines antifungal therapy with a structured improvement in denture hygiene. Topical antifungals such as nystatin are applied to both the affected mucosal tissue and the fitting surface of the denture itself. Patients should remove dentures nightly and soak them in an appropriate disinfecting solution while cleaning the surfaces daily with a soft brush. When an ill-fitting denture base is a primary contributor, relining or full replacement should be planned once the acute infection resolves to prevent immediate recurrence.
Addressing both the infectious and mechanical components of denture stomatitis is essential — treating the fungal infection alone, without correcting poor-fitting prosthetics or hygiene habits, leads to a high rate of relapse.