Avoid Sodium lauryl sulfate (SLS) in toothpaste. That’s the #1 cause. It changed my life. SLS is completely useless and should be illegal in toothpaste IMO. It’s just here to generate foam and makes it look like the toothpaste is working. Kids toothpaste often don’t have SLS.
Certain foods can be triggering. For me it’s walnuts and especially canned food.
In my experience using a mouthwash like listerine remarkably accelerates the recovery. **You have to gargle really aggressively for 60 seconds, and regularly mix fresh air in your mouth. The stronger you feel that mouthwash burn the better.**
I only use mouthwash when I have a sore, and generally they are gone after 48h with mouthwash. Otherwise they can last a week.
As far as what they are, I can’t add anything other commenters haven’t already mentioned.
One treatment that helps me a lot is to begin applying Abreva (docosanol) as soon as I notice a sore is forming. It’s technically a cold sore medication, and as others have mentioned cold sores and canker sores are different. I’m not sure why it works, but for me it really does. It reduces both the intensity and duration of my canker sores. Only downside is that Abreva is expensive. But the generic pharmacy brands work just as well and will save you a bit.
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