Canker sores can be treated with various over the counter products.
One product that helps promote healing is glyoxide. The best product that clears up the canker sore
the quickest is a product that has to be placed on by your dentist or may be able to be purchased at their office. It is called debactoral. It will sting when placed on the ulcer but the ulcer will be gone in 3 - 4 days.