Patent ID: 11890359
Assignee: KURARAY NORITAKE DENTAL INC.
Field: Pharmaceuticals (Chemistry)
Classification: CPC A  B  C | IPC A  C

Claim 15:
16. A method of producing a composition, comprising:
dispersing a composition in a solvent, the composition comprising zirconia particles comprising more than 50% of primary particles having an average particle diameter in a range of from 0.01 μm to 2.5 μm in a solvent, to obtain a dispersed composition;
drying the dispersed composition via spray drying to produce granules in which the zirconia particles are aggregated;
putting a first layer into a mold, the first layer comprising a first composition of the composition;
layering a second layer onto the first layer, the second layer comprising a second composition of the composition; and
vibrating the mold;
wherein granules in one of the first layer and the second layer have an average circularity of greater than 0.70 and smaller than 0.81, based on a projected image, and
wherein granules in the other layer of the first layer and the second layer have an average circularity of 0.86 or greater, based on a projected image.