Title:
ZIRCONIA PRE-SINTERED BODY, COMPOSITION, AND METHODS FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2024/096102
Kind Code:
A1
Abstract:
The present invention provides a pre-sintered body and a composition which are for obtaining a zirconia sintered body that, after short sintering in which the time of holding at a maximum sintering temperature is 10 minutes or less, maintains high light transmissivity equivalent to that of when long sintering is performed. The present invention also provides methods for producing the same. The present invention relates to a zirconia pre-sintered body in which zirconia particles have been consolidated to a degree such that sintering is not achieved, said zirconia pre-sintered body comprising a stabilizer capable of suppressing phase transition of the zirconia, wherein the following expression (1) is satisfied when comparing ΔL1*(W-B) relating to a first sintered body produced by sintering at 1550°C for 120 minutes and ΔL2*(W-B) relating to a second sintered body produced by sintering at 1550°C for 10 minutes. (1): ΔL2*(W-B)/ΔL1*(W-B)≥0.85
Inventors:
NAKANO KIRIHIRO (JP)
KASHIKI NOBUSUKE (JP)
NIWA TAKAHIRO (JP)
KASHIKI NOBUSUKE (JP)
NIWA TAKAHIRO (JP)
Application Number:
PCT/JP2023/039628
Publication Date:
May 10, 2024
Filing Date:
November 02, 2023
Export Citation:
Assignee:
KURARAY NORITAKE DENTAL INC (JP)
International Classes:
C04B35/486; A61C13/083; A61K6/818; A61K6/824; A61L27/10; C01G25/00; C01G25/02
Domestic Patent References:
| WO2020179876A1 | 2020-09-10 | |||
| WO2020179877A1 | 2020-09-10 | |||
| WO2023120674A1 | 2023-06-29 |
Foreign References:
| JP2022162005A | 2022-10-21 |
Attorney, Agent or Firm:
KAMADA Koichi et al. (JP)
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