My dentist filled a cavity a week ago. i can't drink anything cold or eat anything hot without wincing in pain. he says it could take weeks or mnormal?

Sensitve tooth: Several things could cause sensitivity such as how large and deep was the cavity, what type of restorative material was used, do you clench or grind your teeth. Restoring a tooth will have a resultant inflammatory response. Clenching or grinding could exaggerate that inflammatory response however the intensity should gradually diminish over time. Check with your dentist your bite my be off too.

Hyperemic pulp: Fillings can often set up a pulpal reaction called hyperemia.This is an inflammatory reaction that exhibits increased blood flow. Clinically cold sensitivity results. The tooth can also be heat sensitive but this is less common, and sometimes means more inflamation or pulpitis. If your thermal sensitivity lingers longer or increases, you may require a root canal. Give it 2-3 wks and if things dor.

Pain after filling: This could be caused by a number of issues. Was it a deep cavity? Are you biting high on the filling? Was the nerve exposed? Does it hurt without any temperature change? There is no simple answer. It could resolve in a week or two. It may not? If the pain continues to get worse or if you have any swelling see your dentist right away. If it is getting better give it more time.