| abstract |
The invention relates to compositions based on ZrO 2, as well as single and multi-colored blanks made of oxide ceramics, and a process for their preparation, in whichna) oxide ceramic powder coated with a coloring substance,nb) the coated powders are preferably classified and at least one colored powder is filled into a press mold,nc) the colored powder (s) is pressed into a shaped article andnd) the pressed molding is sintered into a blank, and the use of these blanks for the production of dental restorations. |