Aphthous Ulcers: Canker sores are small ulcer craters in the lining of the mouth that are frequently painful and sensitive. Canker sores are very common. About 20% of the population (one out of five people) have canker sores at any one time. Canker sores are also medically known as aphthous ulcers or aphthous stomatitis.
Answered 10/5/2012
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Mouth ulcers: Ulcers can come from stress and is usually viral, speak to your dentist they may be able to prescribe something. Sometimes it goes away after 10days to 2 weeks, but see your physician or dentist for evaluation.
Answered 12/10/2013
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