Patent ID: 6379593
Filing Date: 2002-04-30
Classification: A61C,A61K

Abstract:
A method for producing a multi-colored shaped body suitable for further processing to form a dental restoration by a CAD/CAM or a copy milling process, said method comprising:(a) obtaining at least first and second ceramic materials, each of which have been subjected to tempering to produce a homogeneous mass comprising glass and crystal phases, wherein said first and second ceramic materials differ in color after sintering; (b) introducing an amount of said first ceramic material into a compacting die; (c) introducing an amount of said second ceramic material into said compacting die; (d) applying pressure to said ceramic materials in said compacting dye; and (e) sintering the product of step (d) at a temperature from 700 to 1200Â° C., to form a multi-colored shaped body wherein said first ceramic material and said second ceramic material are materials of different colors.