There are times when your dentist will recommend crowns. A crown or cap is a cosmetic procedure that entails using a metal and/or porcelain covering that is placed over the tooth surface, restoring strength and appearance. Crowns are needed when a filling is not enough to give tooth proper structure, to fix fractures, or lend support for bridges. Crowns improve the appearance and structure of the tooth. Crowns typically consist of two appointments. Impressions are made and sent to a local laboratory in order to create the custom crowns. For placement, the tooth will be numbed in order to remove any existing decay and to shape the tooth for the new crown. A temporary crown will be placed on the tooth to protect it while the new one is being made. It is important that care be taken with the temporary crown to avoid loosening. When the new crown arrives, the patient will return to the office for placement and fitting.