公开(公告)号：US20240252292A1

公开(公告)日：2024-08-01

申请号：US18234611

申请日：2023-08-16

Applicant: SHOFU INC.

Inventor： Shuhei TAKAHASHI ,  Satoshi FUJIWARA ,  Munehira TAKENAKA

IPC: A61C13/00

CPC classification number: A61C13/0022 ,  A61C2201/00

Abstract: To provide a ceramic mill blank for dental cutting and machining in which cracks or chips are not caused on the outer edge of the ceramic mill blank even if attaching to and detaching from a dental milling machine are repeated and it is possible to machine the vicinity of the outer edge of the ceramic mill blank.
To provide a ceramic mill blank for dental cutting and machining, wherein, the ceramic mill blank for dental cutting and machining comprises a ceramic portion to be cut and machined and one or more seal members, the ceramic portion consists of a ceramic material which is not finally sintered, the ceramic portion has an outer peripheral surface which is engageable with a holding tool, the one or more seal members are provided on the outer peripheral surface of the ceramic portion, and a length of the one or more seal members is 50% or more of a length in a circumferential direction of the outer peripheral surface provided with the one or more seal members.

公开(公告)号：US20240164868A1

公开(公告)日：2024-05-23

申请号：US18423978

申请日：2024-01-26

Applicant: SHOFU INC.

Inventor： Kazumichi NONAKA ,  Shuhei TAKAHASHI

IPC: A61C1/08 ,  A61C3/02 ,  B22F3/04 ,  C04B35/622 ,  C04B38/00

CPC classification number: A61C1/08 ,  A61C3/02 ,  B22F3/04 ,  C04B35/622 ,  C04B38/0074 ,  B22F2003/242

Abstract: To provide a zirconia mill blank for dental cutting and machining which has excellent machinability in a thin workpiece such as an inlay, an onlay and a veneer, and may impart high strength and high translucency to a zirconia perfect sintered body without a special sintering such as HIP treatment, and a preparing method thereof.
The zirconia mill blank for dental cutting and machining has a porosity within a range of 15 to 30%.

公开(公告)号：US20220202656A1

公开(公告)日：2022-06-30

申请号：US17502404

申请日：2021-10-15

Applicant: SHOFU INC.

Inventor： Kazumichi NONAKA ,  Shuhei TAKAHASHI

IPC: A61K6/84 ,  A61K6/818

Abstract: To provide a liquid for improving translucency for dental zirconia calcined body which may impart high translucency which is similar to an enamel of a natural tooth to a zirconia sintered body and a method for using thereof.
The liquid for improving translucency for dental zirconia calcined body of the present disclosure contains a solvent and an indium compound, wherein a content of the indium compound based on the total amount of the liquid improving translucency for dental zirconia calcined body is within a range of 2.0 wt. % to 20.0 wt. % in terms of indium.

公开(公告)号：US20200170753A1

公开(公告)日：2020-06-04

申请号：US16546426

申请日：2019-08-21

Applicant: SHOFU INC.

Inventor： Kazumichi NONAKA ,  Shuhei TAKAHASHI

IPC: A61C1/08 ,  B22F3/04 ,  A61C3/02

Abstract: To provide a zirconia mill blank for dental cutting and machining which has excellent machinability in a thin workpiece such as an inlay, an onlay and a veneer, and may impart high strength and high translucency to a zirconia perfect sintered body without a special sintering such as HIP treatment, and a preparing method thereof. The zirconia mill blank for dental cutting and machining has a porosity within a range of 15 to 30%.