When a tooth is fractured, has a large, old filling, or is severely damaged by decay, your dentist may recommend the placement of a crown, or cap. Crowns strengthen and protect the remaining tooth structure and can improve the appearance of your smile. Types of crowns include the full porcelain crown, the porcelain-fused-to-metal crown, and the all-metal crown.

Procedure

Fitting a crown requires at least two visits to the dentist’s office. Initially, the dentist removes decay and shapes the tooth
....makes an impression
....and makes and fits a temporary or transitional crown of plastic or metal.
In a subsequent visit, the dentist removes the temporary, fits and adjusts the final crown, and cements the crown into place.