dental gross block comprising a presintered zirconia porous material, process of its production and dental article formed from said dental gross block

摘要

Abstract "A dental dental block comprising a pre-sintered zirconia porous material, process for its production and a dental article formed from said dental dental block" The invention relates to a dental prosthesis raw block comprising a dental material sintered zirconia porous material, with the presintered zirconia porous material showing an adsorption of type iv isotherm n2 according to the iupac classification, the presintered zirconia porous material having a vickers hardness of about 25 to about 150, the gross dental machining block comprises means for reversibly attaching it to a machining device. The invention also relates to a process of producing a zirconia dental article comprising the steps of providing a crude dental prosthesis machining block comprising a porous pre-sintered zirconia material, placing the dental prosthesis machining raw block into a machining device, machining the porous zirconia material and a dental article obtained by such a process.