The metal frame is covered with layers of ceramic manually, after which firing occurs crowns at 800 degrees Celsius, thereby achieving a strong bond with the metal of the ceramic layer.

Advantages of metal-ceramic crowns are durability, strength, and acceptable aesthetics. Qualitatively made metal-ceramic crowns correspond to the appearance of healthy teeth. The metal frame provides significant structural strength, and the ceramic layer is not subject to decay. In rare cases, the possible peeling of the ceramic layer, but this problem can be easily eliminated by repairing the crown right in the mouth. The life of a crown of eight to ten years.

The disadvantage of metal-ceramic crowns is that you need a large enough ground off tooth area and produce depulpation (nerve removal). Sanding is at a depth of 1.5 to 2 mm on all sides of the tooth, the width of the crown, respectively. Depulpation necessary to prevent burning and destruction of the pulp during Sanding that can lead to inflammation and the need for treatment and reuse of the tooth prosthesis. After removal of the tooth pulp becomes brittle, so large teeth, doctors are trying to keep alive.

Before installing crown made X-ray study. X-ray picture allows the dentist to make sure in the absence of inflammation at the apex of the tooth root. If the picture will be the focus of inflammation is seen, then you must first treat the tooth. In the presence of caries and need treatment, and in the presence of old poorly made seals - replace them.