Thanks for posting your query.
treatment depends on size and severity. Mix salt in warm water in your mouth for 30 sec.
in same amount of water and apply this on canker sores with help of cotton swab.
Most canker sores go away on their own in a week or two. Check with your doctor or dentist
if you have unusually large or painful canker sores or canker sores that don't seem to heal.
Over-the-counter and prescription pastes with active ingredients such as benzocaine
(Anbesol), amlexanox and fluocinonide
can help relieve pain and speed healing if applied to individual sores as soon as they appear.