Wearing dentures can restore your ability to eat, speak, and smile with confidencebut they can also lead to mouth sores if not fitted or maintained properly. Denture irritation is one of the most common issues among denture wearers, especially in the early stages of adjustment or when the prosthetic becomes loose over time.
At McLevin Dental, we help patients across Scarborough manage and prevent denture-related discomfort. If youre experiencing a sore spot, ulcer, or tenderness caused by your dentures, heres how to care for it and when to seek professional help.
What Causes Denture-Related Mouth Sores?
Mouth sores can develop for several reasons, including:
Poor fit or loose dentures rubbing against soft tissue
Hard or sharp denture edges causing trauma
Food particles trapped under the denture, causing inflammation
Improper cleaning, leading to fungal or bacterial infections
Overuse, especially wearing dentures overnight without a break
Allergic reactions to denture materials (rare but possible)
The result is often painful red spots, ulcers, or raw patches on the gums, cheeks, tongue, or roof of the mouth.
Symptoms of a Denture-Related Sore
Redness, swelling, or white patches
Sharp pain or dull aching where the denture contacts tissue
Burning sensation
Bad taste or breath (if infection is present)
Bleeding or ulceration in severe cases
Difficulty eating or speaking
Mild irritation can resolve at home, but ongoing or severe symptoms should be evaluated by a dentist.
Step-by-Step Guide: Caring for a Denture-Related Mouth Sore
1. Remove the Denture to Rest the Tissue
Take out your denture for several hoursideally overnightto give the affected area time to heal. Continued pressure on the sore will only prolong recovery.
If you wear full dentures, sleep without them until the sore improves.
2. Rinse with Warm Salt Water
Saltwater helps cleanse the area, reduce inflammation, and speed healing.
How to rinse:
Mix ½ teaspoon of salt with 1 cup of warm water
Swish gently for 30 seconds, then spit
Repeat 23 times daily until the sore heals
Do not use alcohol-based mouthwashesthey can further irritate oral tissues.
3. Apply a Soothing Gel or Topical Treatment
Over-the-counter oral gels (e.g., benzocaine or aloe vera-based products) can temporarily numb the area and reduce discomfort. Use a cotton swab or clean finger to apply a thin layer directly to the sore.
If fungal infection is suspected (e.g., white patches that wipe off), your dentist may prescribe antifungal medication like nystatin.
4. Clean Your Dentures Thoroughly
Improper cleaning can lead to plaque buildup and microbial growth that worsens irritation. Each night:
Brush your dentures with a soft-bristle brush and non-abrasive denture cleanser
Soak in an antibacterial or antifungal solution overnight (as recommended)
Rinse thoroughly before reinserting the next morning
Avoid using regular toothpasteits too abrasive for denture materials.
5. Reinsert Gently and Check Fit
Once discomfort has subsided slightly, try reinserting the denture. If pain returns immediately or worsens, it may be due to pressure points or poor alignment.
Never force a denture into place or attempt to adjust it yourself.
When to See a Dentist
You should schedule an appointment if:
The sore doesnt improve after 57 days of home care
You experience recurring or multiple sores
Your denture feels loose, unstable, or painful
You see white patches, pus, or swelling
You develop a fever or systemic symptoms
At McLevin Dental, we can evaluate the sore and make necessary denture adjustments to relieve pressure and improve fit.
Professional Treatment Options
Depending on the cause, your dentist may recommend:
1. Denture Adjustments
Relining, rebasing, or reshaping the denture to remove pressure points and improve stability.
2. Soft Liners
For patients with sensitive tissues or recurring sores, a soft liner can cushion the denture base and reduce friction.
3. Denture Replacement
If your dentures are old, damaged, or no longer fitting correctly due to jawbone changes, new custom dentures may be needed.
4. Treatment for Infections
Antibiotics or antifungal medications may be prescribed for infections like denture stomatitis or oral thrush.
Preventing Denture Irritation in the Future
Visit your dentist regularly to check denture fit and oral health
Clean your dentures and mouth daily
Remove dentures at night to give your gums a break
Avoid overly hard or sticky foods that strain the prosthetic
Report discomfort earlydont wait for a sore to worsen
Denture-related problems are common but highly manageable with the right care and regular dental oversight.
Can Mouth Sores Become Serious?
Yes. Persistent mouth soresespecially those that dont heal within two weeksmay indicate more serious conditions, including infections or (rarely) oral cancer. Always have long-lasting or unusual sores evaluated by a dental professional.
Why Choose McLevin Dental for Denture Care?
At McLevin Dental, we provide:
Expert denture fittings and adjustments
Emergency care for denture-related pain or trauma
Treatment for soft tissue injuries and infections
Custom denture solutions tailored to your comfort and needs
Preventive care to minimize complications
Our team in Scarborough is committed to helping you wear your dentures with confidenceand without discomfort.
Final Thoughts
Mouth sores from denture irritation are common, especially during periods of adjustment or if the denture fit has changed. With proper first aid, improved hygiene, and professional support, most sores heal quickly and completely.