Gum ulcers causes treatment and healing
Gum ulcers are painful breaks in the lining of the mouth, often caused by minor injury, irritation, or an inflammatory condition.
The short answer
A gum ulcer is a sore or break in the oral mucosa over or beside the gum, and treatment depends on its cause, duration, and appearance.
What different problems can look like a gum ulcer?
The sore may be a canker sore, a scrape from sharp food or a tooth edge, a burn, or inflammation around a tooth. A dentist checks the ulcer, nearby teeth, gum margins, and lymph nodes, and asks about medicines, tobacco, illness, and repeated episodes.
How can I care for a gum ulcer without irritating it?
Keep the area clean with a soft toothbrush and avoid picking it, very hot food, alcohol-containing rinses, and foods that sting. Rinse gently with plain water or a salt-water solution, choose soft foods, and use a pharmacy mouth-ulcer product only as directed.
When should an ulcer lasting over two weeks be examined?
Arrange a dental examination if the ulcer lasts beyond two weeks, keeps returning, enlarges, bleeds without provocation, or is accompanied by a lump, numbness, fever, or difficulty swallowing. Seek urgent care for facial swelling, breathing difficulty, or inability to drink.
What tests or referrals might my gum lesion need?
Ask whether the lesion is traumatic, inflammatory, infectious, or related to a tooth or denture, and whether it needs a swab, blood tests, or referral. Ask which pain-relief product is suitable and what change should prompt a review.
Frequently asked questions
Can a gum ulcer heal on its own?
A minor traumatic or canker-type ulcer may heal as the mucosa repairs, but persistence or recurrence needs assessment.
Can a sharp tooth cause an ulcer?
Yes. Repeated rubbing from a sharp tooth, filling, denture, or orthodontic wire can keep the mucosa injured until the cause is corrected.
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Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.