In today's dental technology mostly ceramic crowns doesn't need to use to metal framework for support and strength. They prepared special porcelain reinforced structure. The entire restoration with ceramic porcelain clutter on infrastructure such material can be produced ceramic restorations can be created. Fabricated from high-strength ceramics, they are biocompatible, durable, and unmatched in esthetics. Since the core material of these crowns is the color of a tooth instead of metal, the restoration has all the translucency, luster, and light reflection of a natural tooth; and there are not any dark metal bands around the neck of the crown to hide.
They imitate the best light transmission feature superior aesthetic properties of natural teeth carry. These reactions to light causes the crown vivid. Mimics the feeling of depth of natural teeth. Because of this feature, especially for high aesthetic expectations porcelain metal support in the front teeth are preferred.