Why Dentures Cause Mouth Ulcers
The fit is usually the first thing to look at. Your gums and the shape of your mouth change naturally, and dentures don’t change with them. So a spot that once had plenty of room can start getting pressed or rubbed.
And sometimes the problem is much simpler. A rough edge, a small crack, or food trapped beneath the denture can irritate the same area repeatedly. Once the tissue is sore, continuing to wear a poorly fitting denture keeps hitting that exact spot.
What a Denture Ulcer Feels Like
You might see a red patch or a small open sore where the denture touches your mouth. It can sting when you eat. Spicy or acidic foods tend to make that feeling worse, which is a particularly unfair bonus.
What You Can Do at Home
• A gentle warm salt-water rinse can feel soothing, though it isn’t a fix for a denture that keeps rubbing.
• Keep the denture clean, especially around the area that sits against the sore.
• No DIY filing. It sounds practical, but taking material off the wrong part can make the fit worse.
• Denture adhesive isn’t a substitute for a proper adjustment, particularly if you’re using more and more of it just to feel comfortable.
When to Get It Checked
Most irritation from a denture should start settling once the source of rubbing is dealt with. But a sore that doesn’t heal within about two weeks deserves a dental check, especially if it keeps coming back.
And if your denture has suddenly become uncomfortable after years of being fine, that’s worth mentioning to your dentist. Your mouth has changed. The denture didn’t.
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The insights shared in our articles are meant to educate and inform, not to replace a face-to-face consultation. Every smile is unique, and a proper diagnosis can only be made by a qualified clinical professional. Please book an appointment with our team or consult your local dentist for advice tailored to your specific oral health needs.
