Which of the following is a common cause of ulcerated mucosa from denture irritation?

• A. Ill fitting dentures
• B. Regular dental visits
• C. Adequate oral hygiene
• D. Dentures left out of the mouth

Answer: (A)

Ill-fitting dentures cause ulcerated mucosa because they don’t distribute chewing forces evenly and tend to move and rub against the mucosa during function and even at rest. That persistent friction and localized pressure injure the mucosal lining, leading to ulcers, especially along the denture borders where movement is greatest. Over time this trauma can sustain inflammation and irritation. Proper fit and border adjustment, along with relining when needed, help prevent and heal these ulcers. Regular dental visits support early detection and adjustment of a misfit, while good hygiene reduces infection risk but doesn’t resolve the mechanical irritation from a poorly fitting base; removing dentures from the mouth eliminates the irritant and allows healing.