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DENTAL MILL BLANK, PROCESS FOR PRODUCTION AND USE THEREOF
The invention relates to a coloured zirconia ceramic dental mill blank having fluorescing properties, processes of production such a mill blank and uses thereof, in particular for producing zirconia ceramic dental restorations.The dental mill blank having a shape allowing the dental mill blank to be attached or fixed to a machining device, the dental mill blank comprising a porous zirconia material, the porous zirconia material comprising the oxides Zr oxide calculated as ZrO2: from about 80 to about 97 wt.-%, Al oxide calculated as Al2O3: from about 0 to about 0.15 wt.-%, Y oxide calculated as Y2O3: from about 1 to about 10 wt.-%, Bi oxide calculated as Bi2O3: from about 0.01 to about 0.20 wt.-%, Tb oxide calculated as Tb2O3: from about 0.01 to about 0.8 wt.-%, and optionally one or two of the following oxides: Er oxide calculated as Er2O3: from about 0.01 to about 3.0 wt.-%, Mn oxide calculated as MnO2: from about 0.0001 to about 0.08 wt.-%, wt.-% with respect to the weight of the porous zirconia material.
DENTAL MILL BLANK, PROCESS FOR PRODUCTION AND USE THEREOF
The invention relates to a coloured zirconia ceramic dental mill blank having fluorescing properties, processes of production such a mill blank and uses thereof, in particular for producing zirconia ceramic dental restorations.The dental mill blank having a shape allowing the dental mill blank to be attached or fixed to a machining device, the dental mill blank comprising a porous zirconia material, the porous zirconia material comprising the oxides Zr oxide calculated as ZrO2: from about 80 to about 97 wt.-%, Al oxide calculated as Al2O3: from about 0 to about 0.15 wt.-%, Y oxide calculated as Y2O3: from about 1 to about 10 wt.-%, Bi oxide calculated as Bi2O3: from about 0.01 to about 0.20 wt.-%, Tb oxide calculated as Tb2O3: from about 0.01 to about 0.8 wt.-%, and optionally one or two of the following oxides: Er oxide calculated as Er2O3: from about 0.01 to about 3.0 wt.-%, Mn oxide calculated as MnO2: from about 0.0001 to about 0.08 wt.-%, wt.-% with respect to the weight of the porous zirconia material.
DENTAL MILL BLANK, PROCESS FOR PRODUCTION AND USE THEREOF
ZAHNFRÄSFORMLING, VERFAHREN ZUR HERSTELLUNG UND VERWENDUNG DAVON
ARTICLE DENTAIRE EN CÉRAMIQUE, SON PROCÉDÉ DE FABRICATION ET SON UTILISATION
JAHNS MICHAEL (author) / SCHNAGL HANS R (author)
2017-11-22
Patent
Electronic Resource
English
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