ZIRCONIA SINTERED BODY, ZIRCONIA COMPOSITION AND ZIRCONIA CALCINED BODY, PRODUCTION METHOD OF THESE, AND DENTAL PROSTHESIS

摘要

A zirconia sintered body having gradation is provided. A method for preparing a zirconia composition comprises preparing a plurality of powders for lamination; the lamination powders containing zirconia, a stabilizer(s) suppressing phase transition of zirconia and a pigment(s) at respective different pigment content ratios, and laminating the lamination powders in a mold. In the laminating step, the mold is vibrated after at least two lamination powders are charged into the mold.