Title:
歯科用ジルコニア焼結体、積層体及び歯科加工用ジルコニア仮焼体、並びに歯科用補綴物
Document Type and Number:
Japanese Patent JP7277495
Kind Code:
B2
Abstract:
A zirconia sintered body is provided in which the strength between layers of powders is improved. A flexural strength of a test sample of the zirconia sintered body, measured pursuant to JISR1601, is not less than 1100MPa. The test sample is formed by preparing a plurality of zirconia powders, each containing zirconia and a stabilizer that suppresses phase transition of zirconia, the zirconia powders differing in a composition, layering the zirconia powders to form a zirconia composition, and sintering the zirconia composition to form a zirconia sintered body. The flexural strength is measured such that a load point is positioned at a boundary of the zirconia powders, the boundary traversing the test sample of the sintered body along a direction of load application.
Inventors:
Yoshihisa Yamada
Atsushi Matsumoto
Shoo Ito
Atsushi Matsumoto
Shoo Ito
Application Number:
JP2021023844A
Publication Date:
May 19, 2023
Filing Date:
February 18, 2021
Export Citation:
Assignee:
Kuraray Noritake Dental Co., Ltd.
International Classes:
C04B35/488; A61C13/083; B32B18/00
Domestic Patent References:
| JP2007314536A | ||||
| JP2004035332A | ||||
| JP2008068079A |
Attorney, Agent or Firm:
Asamichi Kato