Back to results
US 12,709,578 B2Granted
Zirconia pre-sintered body
AssigneeKuraray Noritake Dental Inc.
InventorsKirihiro Nakano, Nobusuke Kashiki, Yasutaka Kudo, Yoshihisa Ito
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeKuraray Noritake Dental Inc.
InventorsKirihiro Nakano, Nobusuke Kashiki, Yasutaka Kudo, Yoshihisa Ito
Estimating the term…
The present invention provides a pre-sintered body for obtaining a zirconia sintered body that can satisfy both high strength and high translucency, and a method of production of such a pre-sintered body. The present invention relates to a zirconia pre-sintered body comprising a secondary aggregate having an average particle diameter of 275 nm or less, the secondary aggregate comprising zirconia, and a stabilizer capable of preventing a phase transformation of zirconia, the secondary aggregate comprising a larger particle having an average primary particle diameter of 100 nm or more and 200 nm or less, and a smaller particle having an average primary particle diameter of 10 nm or more and less than 60 nm.
A zirconia pre-sintered body comprising a secondary aggregate having an average particle diameter of 275 nm or less,
A method for producing a zirconia pre-sintered body that comprises zirconia, and a stabilizer capable of preventing a phase transformation of zirconia, comprising sintering a composition which comprises a powder (A) that comprises a secondary aggregate comprising a powder (a1) having an average primary particle diameter of 100 nm or more and 200 nm or less, and a powder (a2) having an average primary particle diameter of 10 nm or more and less than 60 nm,
Dependencies are inferred from the claim text.