Dental milling blank of porous zirconia material containing oxides of Tb, Er and Cr, method for production and use thereof

The invention relates to a dental zirconia milling blank comprising a porous zirconia material comprising Zr oxide, Y oxide, optionally Al oxide, Bi oxide, Tb oxide, Er oxide, Cr oxide, the porous zirconia material not comprising more than 0.01% by weight Fe oxide, calculated as Fe2O3, more than 0.005% by weight Mn oxide, calculated as MnO2, less than 0.01% by weight Fe oxide, less than 0.005% by weight Mn oxide, less than 0.01% by weight Fe oxide, less than 0.01% by weight Mn oxide, less than 0.01% by weight Fe oxide, less than 0.01% by weight Mn oxide, less than 0.01% by weight Fe oxide, less than 0.01% by weight Mn oxide, less than 0.01% more than 0.005% by weight, calculated as Co2O3, of Co oxide, the% by weight relative to the weight of the porous zirconia material. The invention also relates to a method for producing such a dental zirconia milling blank and to a dental restoration that can be processed from the dental zirconia milling blank. Furthermore, the invention relates to a kit comprising such a