Canker sores are small white ulcers (or lesions) usually found inside of the mouth, on tongues, cheeks, lips and around the gum line. They are also surrounded by an area of redness. To date, there is no known reason why canker sores appear and scientists have deemed them as “unavoidable”.
Although canker sores can lead to some discomfort – mostly when you’re eating or drinking acidic or spicy food and drinks – relief can be provided with warm salt water rinses. Canker sores are not contagious and should heal between 7-10 days. If you don’t see any healing after 7-10 days, it’s best you visit your brooklin dentist or physician to investigate the lesion a little more.