Dental product with enhanced toughness
AssigneeKuraray Noritake Dental Inc.
InventorsYuta Tajima, Toshio Sakakibara, Kiyoko Ban
Life of this patent
Estimating the term…
Abstract
The present invention provides a dental product comprising a base material formed of a zirconia sintered body, and having high aesthetic quality with enhanced fracture toughness and with reduced chipping and cracking in the porcelain layer. The present invention also provides a method for manufacturing such a dental product. The present invention relates to a dental product comprising: a base material formed of a zirconia sintered body, and a porcelain layer, wherein the porcelain of the porcelain layer has a suitable firing temperature of 900° C. or more, and the porcelain layer has a fracture toughness value of 1.20 MPa·m0.5 or more.
Claims13
A dental product comprising:
- a base material formed of a zirconia sintered body;
- and
- a porcelain layer formed by sintering porcelain,
- wherein the porcelain comprises ceramic, glass, or glass-ceramic, and comprises 65.0 to 90.0 mol % of SiO2, 4.0 to 15.0 mol % of Al2O3, 0.1 to 10.0 mol % of Na2O, 1.0 to 10.0 mol % of K2O, and 0.01 to 15.0 mol % of CaO, and optionally less than 0.1 mol % of Li2O based on total 100 mol % of constituent components. and has a suitable firing temperature of 1050° C. or more, and the porcelain layer has a fracture toughness value of 1.20 MPa·m0.5 or more.
Dependencies are inferred from the claim text.