Can you please help to make a canker sore go away?

Canker sores: Check with your dentist. Treatment with a laser will eliminate the pain immediately and help it heal faster. Your dentist may also use debacterol on the ulcer. Canker sores heal on their own in 7-10 days. You can get orabase ointment at your pharmacy and apply before eating. Orabase is an oral bandage that adheres to the ulcer to prevent it from being irritated by hot or spicy foods.

Wait: Wait about a week. Sometimes it even takes 7 days.