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HealthInfo Canterbury

Mouth ulcers

Mouth ulcers are very common, affecting around one-in-five people. They're also known as apthous ulcers. Most will heal in around 10 to 14 days but they can be very painful. If your ulcer hasn't gone away after two weeks you should see your dentist or GP.

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Written by HealthInfo clinical advisers. Last reviewed October 2018.

Page reference: 75114

Review key: HIMUL-75114