Canker Sore remedy using Baking Soda... ~ M got a canker sore and we did this before bed. Helped a ton. It was almost gone in the am. I add few drops of tea tree oil to my mouthwash and I am age 72 and have healthy gums.
My pediatrician told me about this years ago! It really does work. Magic Mouthwash: Remedy for Sore Throats and Mouth Sores. This seriously is a miracle for even the worst cankers. My kids love it.
SALT WATER REMEDIES
Mouth ulcers can be extremely painful and can hinder your ability to eat and speak. Check out Top 15 Home Remedies To Cure Mouth Ulcers.
42 Life Hacks For A Healthier You
13 Ways to Heal the Obnoxious Canker Sore - Dr. Axe
Health Life Hacks ~ I have not tried them all personally but I've heard many of them spread around for quite some time.