The zirconium
 
Zirconia is an innovative system for esthetic metal-free crowns and bridges. The reliability of zircon restorations is backed by more than five years of proven clinical success. The system is used to fabricate anterior or posterior single units or multi-unit bridge restorations out of translucent, biocompatible zirconia, the strongest and toughest dental ceramic.

Milled crown made of zircon crystal or so-called zircon crown is the most modern solution of tooth-crowning. Also this solution includes a basic construction that is milled of zircon crystal and it is then covered with plastic porcelain. Advantage of this method is the fact that zircon ceramic is very firm and it can be applied to more serious dentition defects, i.e. loss of 3-4 neighbouring teeth.

The technology

Zirconium-ceramic crowns are made by CAD/CAM technology.This innovative system combines the durability of porcelain fused to metal bridges with the aesthetic appearance of metal-free crowns. This system is based on the material zirconium-oxide.
The zirconium has good mechanical properties as metals but doesn't affect allergic reactions in human organism. It appertains to his good qualities that it conducts heat very badly, so the patients do not complain about cold or heat sensitiveness. This material is produced with the help of the most modern CAD/CAM computer technologies. Zirconium oxide crowns and bridges are the most aesthetic solutions.

The traditional crowns have a porcelain layer burnt on a metal cap, so its light permeability is weak. The light permeability of porcelain crowns burnt on zirconium oxide look like the own natural teeth. Because there aren't any metal caps, the dark metal frame-edge of the crown will not be visible if the gums may draw back in after years.