How does oral ulcer form?

Oral ulcers are mainly traumatic factors. Trauma to the oral mucosa is formed. This kind of oral ulcer is called traumatic oral ulcer. For example, the edge is too sharp residual root or residual crown. This edge may rub gum tissue like a knife, rubbing tongue tissue, thus causing gum and tongue oral ulcers. Of course, if recurrent aphthous ulcer may be caused by genetic factors, immune factors, infectious factors, vitamin deficiency, psychological factors, social environmental factors, etc., there are oral ulcers, or it is recommended to see a doctor in the oral mucosa department, as far as possible regular medication.