Title:
ZIRCONIA LAMINATE
Document Type and Number:
WIPO Patent Application WO/2023/157926
Kind Code:
A1
Abstract:
Provided is a laminate that can give an impression close to that of natural teeth, that has translucency and color gradation, and that can suppress chipping of the surface layer (layer on denture incisor side). A laminate having a surface layer containing zirconia that contains a stabilizing element and a composition gradient layer configured from two or more unit layers, the unit layers each containing a coloring element and zirconia containing a stabilizing element, and the composition gradient layer being configured by laminating each unit layer so that the content of the stabilizing element of the zirconia containing a stabilizing element contained in the composition gradient layer does not change or decreases from the surface layer side toward the surface side opposite the surface layer side, wherein the content of the stabilizing element of zirconia containing the stabilizing element contained in the surface layer is less than the content of the stabilizing element of zirconia containing the stabilizing element contained in the first composition gradient layer, which is the unit layer adjacent to the surface layer among each of the unit layers configuring the composition gradient layer.
Inventors:
USHIO YUKI (JP)
AZECHI SHO (JP)
ITO AKIKO (JP)
NAGAYAMA HITOSHI (JP)
AZECHI SHO (JP)
ITO AKIKO (JP)
NAGAYAMA HITOSHI (JP)
Application Number:
PCT/JP2023/005497
Publication Date:
August 24, 2023
Filing Date:
February 16, 2023
Export Citation:
Assignee:
TOSOH CORP (JP)
International Classes:
C04B35/488; A61C5/77; A61C13/083; A61K6/78; A61K6/813; A61K6/818; A61K6/822
Domestic Patent References:
| WO2022004862A1 | 2022-01-06 |
Foreign References:
| JP2020147495A | 2020-09-17 | |||
| JP2020147494A | 2020-09-17 | |||
| JP2020029395A | 2020-02-27 | |||
| JP2020142983A | 2020-09-10 | |||
| JP7022875B1 | 2022-02-18 | |||
| CN114180961A | 2022-03-15 |
Attorney, Agent or Firm:
TAKAOKA Ryoichi et al. (JP)
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