Mouth ulcer treatment home remedies
Most minor mouth ulcers heal with time; protect the sore, reduce irritation, and seek assessment when it persists or keeps returning.
The short answer
Rinse gently with salt water, avoid spicy or sharp foods, and protect the ulcer from friction while it heals; persistent or recurrent sores need examination. Do not apply caustic chemicals or crush tablets onto the ulcer.
What exactly is a mouth ulcer?
A mouth ulcer is a break in the lining of the cheek, lip, tongue, or gum that can make eating and speaking painful. Minor ulcers may follow biting, a sharp tooth, braces, stress, illness, nutritional problems, or an inflammatory condition.
What can you do to soothe a mouth ulcer now?
Choose soft, cool foods and use a soft toothbrush; rinse and spit gently after meals. A pharmacist or dentist may recommend a protective paste, local pain relief, or a corticosteroid preparation after checking the ulcer and your medical history.
When does a mouth ulcer need dental assessment?
Arrange care when a sore lasts beyond the usual healing period, is unusually large, repeatedly returns, or makes drinking difficult. Prompt assessment is important for an ulcer with a hard edge, bleeding without injury, a neck lump, or unexplained weight loss.
What should you ask about the cause of an ulcer?
Ask whether a sharp tooth, broken filling, denture, medication, infection, or systemic condition is irritating the tissue. Ask whether the sore needs a swab, blood tests, protective treatment, or review if it does not resolve.
Frequently asked questions
Can salt water heal a mouth ulcer?
A gentle rinse can keep the area cleaner and soothe it, but it does not diagnose or remove an underlying cause.
Is every mouth ulcer a cold sore?
No. A mouth ulcer usually affects the oral lining, while cold sores are caused by herpes simplex and commonly begin as blisters around the lip.
Keep reading
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.