	US 11,752,073 B2
	Dental gypsum powder
Daizaburo Mori, Tokyo (JP); Kenji Kojima, Tokyo (JP); and Masatoshi Yoshinaga, Tokyo (JP)
Assigned to GC Corporation, Shizuoka (JP)
Appl. No. 16/967,880
Filed by GC Corporation, Shizuoka (JP)
PCT Filed Oct. 24, 2018, PCT No. PCT/JP2018/039505 § 371(c)(1), (2) Date Aug. 6, 2020, PCT Pub. No. WO2019/159438, PCT Pub. Date Aug. 22, 2019.
Claims priority of application No. 2018-025667 (JP), filed on Feb. 16, 2018.
Prior Publication US 2021/0045975 A1, Feb. 18, 2021
Int. Cl. A61K 6/90 (2020.01); A61K 6/858 (2020.01); C04B 11/00 (2006.01); C04B 24/18 (2006.01); C04B 24/04 (2006.01); A61C 13/34 (2006.01); C04B 111/00 (2006.01); C04B 103/30 (2006.01)

CPC A61K 6/90 (2020.01) [A61K 6/858 (2020.01); C04B 11/00 (2013.01); C04B 24/04 (2013.01); C04B 24/18 (2013.01); A61C 13/34 (2013.01); C04B 2103/302 (2013.01); C04B 2111/00836 (2013.01)]

1 Claim

1. A dental gypsum powder, comprising:

a hemihydrate gypsum; and

a water reducing agent,

wherein a mass ratio of the water reducing agent to the hemihydrate gypsum is not less than 0.1% and not more than 1%,

wherein a particle content of a particle with a particle size of 10 μm or less is not less than 15% by volume and not more than 35% by volume,

wherein a particle content of a particle with a particle size of 20 μm or less is not less than 40% by volume and not more than 55% by volume, and

wherein a particle content of a particle with a particle size of 30 μm or less is not less than 55% by volume and not more than 75% by volume.