Porcelain dental crowns do require some laboratory time to be created and times vary according to the laboratory and its distance from your dentist, so expect to be fitted with a temporary, or provisional, crown for a while. Some patients may experience sensitivity to hot and cold temperatures after porcelain crowns are attached. It’s best to consult with your dentist for more information about your individual case. While porcelain crowns are very durable, they do not have the flexibility of natural teeth, so avoiding certain foods may be necessary. Chronic tooth grinders and jaw clenchers will need to be fitted with a nighttime mouth guard to protect the porcelain from unnecessary and excessive pressure and use.