US 11,912,629 B2
Method for enhancing mechanical properties in sintered ceramic bodies having applications in dental restorations
Jae Won Kim, Irvine, CA (US); and Enoch Park, Corona, CA (US)
Assigned to James R. Glidewell Dental Ceramics, Inc., Newport Beach, CA (US)
Filed by James R. Glidewell Dental Ceramics, Inc., Newport Beach, CA (US)
Filed on Sep. 14, 2021, as Appl. No. 17/474,407.
Claims priority of provisional application 63/077,935, filed on Sep. 14, 2020.
Prior Publication US 2022/0081369 A1, Mar. 17, 2022
Int. Cl. C04B 41/00 (2006.01); A61K 6/20 (2020.01); A61K 6/818 (2020.01); C04B 35/48 (2006.01); C04B 35/64 (2006.01); C04B 41/45 (2006.01); C04B 41/50 (2006.01)
CPC C04B 41/009 (2013.01) [A61K 6/20 (2020.01); A61K 6/818 (2020.01); C04B 35/48 (2013.01); C04B 35/64 (2013.01); C04B 41/4535 (2013.01); C04B 41/5027 (2013.01); C04B 2235/3246 (2013.01); C04B 2235/3251 (2013.01); C04B 2235/96 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for enhancing the fracture toughness of an yttria-stabilized zirconia ceramic material comprising:
a. applying a solution to a porous ceramic body that comprises an yttria-stabilized zirconia material stabilized by 3 mol % to 12 mol % yttria, the solution comprising
1. 10 wt % to 80 wt % of a tantalum alkoxide;
2. 20 wt % to 90 wt % of a co-solvent system comprising a first solvent and a second solvent that is different than the first solvent, and
3. 0.1 wt % to 10 wt % of a soluble polymer that is soluble in a polar solvent;
b. penetrating at least a portion of the porous ceramic body with the solution; and
c. drying and sintering the porous ceramic body.