Mouth ulcers, otherwise known as canker sores, are one or more sores that develop on the soft tissue of the mouth. The inflamed area around an ulcer can interfere with brushing or chewing, and the sores might take a while to heal. However, mouth ulcers are generally benign in nature.
One or more of the following factors can precipitate ulcers
Steps to accelerate healing
Steps to avoid relapse
If the condition persists beyond two weeks, book an appointment with your dentist for careful examination and further investigation of the site.