eli5 Why do we use WARM salt water for canker sores?

Question

I understand why salt is needed, to dry out the sore and heal it. My doctor said: “gargle with salt water that is as warm as you can handle without burning yourself?” Why was the “warm” aspect of this emphasized so much?

In: Biology

Answer 1

So as many have said you can dissolve more salt in warm water then in cold.
Tip i smear zendium tootpaste directly on the sore, painful when you do it but for me they stop being painfull after 1 or 2 applications and go away entirely very quickly aswell.