What can be done about cold sensitive teeth.

I would urge you to talk with your dentist. I had a similar problem and the dentist had to file (whatever it's called) my tooth (that remains under the crown) down more. It was horrible. Tooth pain is the worst. ☹

Your tooth shouldn't hurt! Did you have a root canal on that tooth before the crown or just the crown? Orajel or anbesol will work, but call your dentist asap!

Sensodyne toothpaste can help.

Use Sensodyne

It takes a few days for a new crown to settle down. Even afterwards, I have found that the tooth is still more sensitive. I use Sensodyne twice daily,

I am using sensodyne And it's been two months since it was installed. Tryed anbesol too