Composition and Method for manufacturing coloured blanks and dental moulded parts

摘要

Preparation of blank and dental molded part, containing color donor compounds comprises coating an oxide powder with the color donor substance; optionally classifying the coated powder and optionally filling into a matrix in pressed form; pressing the colored powder to a molded body; sintering the pressed molded body to a blank and optionally forming dental molded part from the blank. Independent claims are included for: (1) uni- or multi- colored molded bodies, blanks or dental molded parts from colored ceramic oxide powder, where the ratio of the ceramic oxide powder and color donor oxide is 100:0.0001 to 2 parts by weight; (2) a composition based on zirconium dioxide comprising 0.0001-0.75 wt.% of praseodymium such as praseodymium oxide, iron such as ferric oxide, terbium such as terbium sesquioxide or manganese such manganese oxides; and (3) molded body comprising the composition.