Back to results
US 11,077,646 B2Granted
Zirconia composition, zirconia semi-sintered body and zirconia sintered body, as well as dental product
AssigneeKuraray Noritake Dental Inc.
InventorsYoshihisa Ito, Yasutaka Kudo
Life of this patent
Estimating the term…
Abstract
A zirconia composition, a zirconia semi-sintered body, a zirconia sintered body, and a dental product are provided. The zirconia sintered body contains 4 mol % to 7 mol % of yttria as stabilizer, and a shielding material. The zirconia sintered body comprises first region and second region having a higher content ratio of the shielding material than the first region. Difference between content ratio of yttria in the first region and that of yttria in the second region is 1 mol % or less.
Claims14
A composition, comprising:
- a partially stabilized zirconia comprising from 4 mol % to 7 mol % of yttria as a stabilizer and a light shielding material,
- wherein
- the composition comprises a first region and a second region having a higher content ratio of the light shielding material than the first region, and
- the light shielding material is at least one selected from a group consisting of silicon oxide, aluminium oxide, titanium oxide, and a complex oxide of zirconium and silicon.
1 more element
A semi-sintered body, comprising:
- a partially stabilized zirconia containing from 4 mol % to 7 mol % of yttria as a stabilizer, and a light shielding material,
- wherein
- the semi-sintered body comprises a first region and a second region having a higher content ratio of the light shielding material than the first region, and
- the light shielding material is at least one selected from a group comprising silicon oxide, aluminium oxide, titanium oxide, and a complex oxide of zirconium and silicon.
1 more element
Dependencies are inferred from the claim text.