Teeth which have recently undergone restorative dental procedures (crowns, fillings, etc.) may develop sensitivity to temperature changes and chewing afterwards. The tooth typically does not ache on its own, and the patient’s bite feels normal. This behavior is normal, and is most often due to an inflammatory response by the body, following surgical procedures on the tooth.
Many people do not realize it, but teeth are living, and are equipped with extremely sensitive nerve tissue which is capable of detecting the subtlest of changes in internal blood pressure, bite forces, etc. Working on teeth during dental procedures frequently produces such changes.