Canker sores are uncomfortable, annoying, and often painful, and most of us have experienced them at least once. Canker sores are shallow sores in the mouth. They can be caused by many different things such as certain foods, a tissue injury or even stress.
Usually canker sores go away on their own. However, sometimes you may need to visit your dentist to help get rid of them. If you have recurring, or extremely painful sores you should seek out your dentist for a remedy.