Metal-free crowns and bridges
The main advantages of a ceramic crown on zirconia are :
Its biocompatibility, no appearance of gray lines in time because there is no metal, harmlessness with the oral cavity in opposition to the ceramic-metal crowns.
Its resistance, it is just as resistant or even more than a ceramic-metallic crown on gold, chrome-cobalt or any other alloy.
Its aesthetics, because zirconia is white, it is more adapted to serve as a support for a ceramic dental crown. Zirconia favors ‘fibrointegration’ with the gums, which are particularly fond of zirconia compared to metal (no gray lines).
Zirconia bridges have the same technical properties as zirconia ceramic crowns, aesthetics, resistance and biocompatibility. However, there are some manufacturing constraints