Many possible causes: Causes of mouth sores include bites or burns, cuts from sharp objects such as braces, brushing your teeth too hard, chewing tobacco, herpes simplex virus or cancer. If this sore has not completely healed I suggest you go to a medical clinic for an exam where a biopsy may have to be taken. Best of luck with your health!
Answered 3/1/2019
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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