The aesthetic advantage of prosthetic restorations with zirconium-oxide frameworks consists of the fact that they contain no metal, so the transmission of light in and around the prosthetic restoration is almost identical to that in natural teeth. In the case of a metal-containing prosthetic restoration, the metal framework that provides stability, prevents the transmission of light.
Perhaps the most important advantage is that in cases of extreme metal allergy, prosthetic restorations with zirconia frameworks do not cause an allergic reaction.
The stability and durability of zirconium-oxide frameworks are increased primarily by the addition of yttrium oxide, but often also by the addition of magnesium, calcium, aluminium or other oxides.

After grinding and shoulder preparation, the dentist takes precise impressions of the damaged teeth or of those surrounding edentulous areas. If the crown of the damaged tooth cannot be saved, a root canal pivot is placed in the remaining dental root, to which the zirconium-oxide framework can be attached later.
After grinding, a temporary crown is placed on the abutment. The temporary crown is designed to both eliminate aesthetic problems and protect the ground tooth.
Based on the impression, the dental laboratory uses CAD-CAM technology to create a zirconium-oxide framework for the prosthetic restoration, on which a layer of porcelain is fired to create a tooth that is aesthetically pleasing and similar in shape and colour to the original tooth.
The finished framework must always be “tried in” before the final adjustment and attachment of the prosthetic restoration. During the trial fit, the dentist checks that the framework fits precisely the teeth bordering the prosthetic restoration and that the edge of the framework is sealed well at the level of the gingiva.
After any adjustments have been made, the zirconium-oxide framework and porcelain crown are finally attached.



The zirconium-frame-supported prosthetic restoration has a very high load-bearing capacity and is aesthetically impeccable.
However, as high as the load-bearing capacity of zirconium-frame-supported prosthetic restoration is, continuous bearing force will cause microfissures in the material over time. The unique property of zirconia is its ability to stop further growth of microfissures through a so-called fissure-sealing mechanism, further extending the lifespan of the prosthetic restoration.
The high load-bearing capacity of the zirconium-oxide framework allows the restoration of several teeth or even the realization of a full bridge. The tissue-friendly zirconium-oxide framework does not irritate the gingiva, does not cause gingivitis, and its colour does not cause aesthetic problems even in the case of gingival recession over time.