Ask Cash Doc (My teeth keep feeling coldㅠ)

I don't usually notice any major inconvenience in everyday life.

Suddenly when drinking cold beverages or eating meals

My teeth are cold. It's really very uncomfortable and difficult.

In cases where direct stimulation is applied to the nerves

It is said that a ghost appears, so I go to the dentist. I'm so, so scared.

Feeling sick and uncomfortable ㅠㅠ

Is there a good way?