What can I do to prevent canker sores?
Unfortunately, doctors don't know of anything that prevents canker sores from forming. However, you may be able to reduce mouth irritation by avoiding things like chewing gum, and hard, crunchy or spicy foods. Brushing your teeth with a soft toothbrush after meals and flossing every day will keep your mouth free of food that might trigger a canker sore. If you get canker sores often, or if they're very painful, talk to your family doctor.
Written by familydoctor.org editorial staff