公开(公告)号：US20230303419A1

公开(公告)日：2023-09-28

申请号：US18032728

申请日：2022-03-10

Applicant: GC CORPORATION

Inventor： Kenji KOJIMA ,  Koji YAMAMOTO

IPC: C03B11/14 ,  C03B27/012

CPC classification number: C03B11/14 ,  C03B27/012 ,  C03B2215/06

Abstract: Provided is a method of producing a glass-ceramic blank including: preparing plural glass-ceramic powders, laminating the glass-ceramic powders, so that colors of any adjacent layers of the powders are the same as or approximate to each other, and so that said any adjacent layers are different in total light transmittance, and pressure-molding the laminated powders; heating, at 500° C. to 800° C., a laminate obtained by the pressure molding to degrease the laminate; immersing an entire of the laminate after the degreasing in a colorant solution including a single-colored metal ion; and heat-treating, at higher than 750° C. and 1000° C. or lower, the laminate having immersed in the colorant solution.

公开(公告)号：US20200093708A1

公开(公告)日：2020-03-26

申请号：US16566109

申请日：2019-09-10

Applicant: GC CORPORATION

Inventor： Yoshie NOMURA ,  Kenji KOJIMA ,  Tatsuya FUJIMOTO

IPC: A61K6/083 ,  C08F220/18 ,  C08F220/28

Abstract: To provide a composite for a dental pattern resin whose shrinkage when curing and expansion when heated can be both suppressed as its usability is kept, the composite for a dental pattern resin includes a liquid formulation and a powder formulation, wherein the liquid formulation includes a polymerizable monofunctional (meth)acrylate, a polymerizable polyfunctional (meth)acrylate, and a polymerization accelerator, and the powder formulation includes more than 5 mass % of a (meth)acrylate copolymer on the basis of the total powder formulation.

公开(公告)号：US20210045975A1

公开(公告)日：2021-02-18

申请号：US16967880

申请日：2018-10-24

Applicant: GC Corporation

Inventor： Daizaburo MORI ,  Kenji KOJIMA ,  Masatoshi YOSHINAGA

IPC: A61K6/90

Abstract: An embodiment according to the present invention provides a dental gypsum powder including a hemihydrate gypsum and a water-reducing agent, wherein the mass ratio of the water-reducing agent to the hemihydrate gypsum is 0.1 to 1%, the content of particles having a particle diameter of 10 μm or less is 15 to 35 volume %, the content of particles having a particle diameter of 20 μm or less is 40 to 55 volume %, and the content of particles having a particle diameter of 30 μm or less is 55 to 75 volume %.