Crowns (cases) and bridges are used to replace teeth that have a large loss of dental substance. The case, is a cover made either entirely of porcelain or of a metal frame on the inside and porcelain on the outside, it covers the perimeter of the tooth to protect it or to improve its appearance by changing its shape, its color (especially in cases of discolouration ) or its size.
 

The crown is indicated in the following cases:

In denervated teeth.
On broken teeth.

In teeth with large fillings.

In case there is a loss of dental surface due to age, teeth grinding.

To improve the aesthetic appearance of a tooth (if we want to change the color, shape, arrangement of the front teeth and there is no possibility of applying a more conservative technique such as veneers, whitening, bonding, etc.).

To support a removable denture or bridge, when adjacent teeth are missing.