Eli5 If warm water is generally better for cleaning things, including our skin, then why do we use cold water to brush our teeth?

Question

Eli5 If warm water is generally better for cleaning things, including our skin, then why do we use cold water to brush our teeth?

In: 14

Answer 1

People seem to be missing the fact that cold water constricts the gums, encouraging the expulsion of the buildup, but yeah, alternating cold and warm would probably be ideal.

Really scrubbing things perfectly clean is kinda useless on the septic trash system that is your mouth. Best you can do is get rid of the funk on your teeth, an especially tongue, and then get on with your day.