Why does cola sooth my hurt tooth?

Ask the dentist while you are there.

Heat and cold affect a tooth in different ways and for different reasons. @zenvelo is correct—ask the expert,

The cold.

Sure, but you want to be careful as cola will eat away at it. Get it looked at.

Maybe it’s the caffeine?

@zenvelo I am already home. I will ask next appointment.

@ZEPHYRA He said he’s at the dentist office, having it looked at, now.

Sometimes cold will sooth a tooth that is in need of a root canal. My husband experienced this a few years ago. Glad to see that you’re getting it checked out.

I wonder if it’s the sodium bicarbonate.

@Dutchess_lll Yes that is it. Thanks.

Because it’s cold. You need a new filling and probably a root canal too. sorry