公开(公告)号：US20240315816A1

公开(公告)日：2024-09-26

申请号：US18680250

申请日：2024-05-31

Applicant: SHOFU INC.

Inventor： Seiji BAN ,  Shuhei TAKAHASHI ,  Toshio KITAMURA ,  Rieko AIBA

IPC: A61C13/00 ,  A61C5/73 ,  C04B35/48 ,  C04B41/87

CPC classification number: A61C13/0022 ,  A61C5/73 ,  C04B35/48 ,  C04B41/87 ,  C04B2235/3246 ,  C04B2235/94 ,  Y10T428/12229

Abstract: To provide a zirconia perfect sintered body which has a chroma of an excellent color tone and excellent translucency as compared with a zirconia mill blank for dental cutting and machining prepared from a zirconia raw material powder containing various stabilizing materials while maintaining high strength, and does not cause deformation. The zirconia mill blank of the present invention is a semi-fired zirconia mill blank for dental cutting and machining containing a semi-fired body of a ceramic particle, the zirconia mill blank for dental cutting and machining contains zirconium oxide, a stabilizing material consisting of an oxide, and a water-soluble compound salt which contains at least one element selected from calcium, magnesium and a rare earth element and is not an oxide, the content of the stabilizing material in terms of the oxide in the semi-fired body of the ceramic particle is within a range of 2 to 7 mol %, and the content of the water-soluble compound salt in the zirconia mill blank for dental cutting and machining is within a range of 0.1 to 3.5 mol %.