公开(公告)号：US10085923B2

公开(公告)日：2018-10-02

申请号：US14737763

申请日：2015-06-12

Applicant: SHOFU INC.

Inventor： Toshiyuki Nakatsuka ,  Toshio Kitamura ,  Masanori Goto ,  Tomohiro Kai ,  Satoshi Takano ,  Yoshiyuki Jogetsu

IPC: A61C13/09 ,  A61C13/087 ,  A61K6/083 ,  A61K6/00 ,  C08K9/02

Abstract: The present invention relates to a dental curable composition that can be suitably used as a dental material that can substitute part or all of a natural tooth, in particular, a resin material for dental cutting and machining in the field of dental care. An object of the present invention is to provide a dental curable composition in which, when a block shape usable as a resin material for dental cutting and machining is produced while mechanical properties such as hardness, bending strength and compressive strength as well as aesthetic property required for a crown prosthetic appliance are maintained, the dental curable composition can be molded and processed with pressure and heating while strain generated in the block is reduced and no cracks and chipping occur. There is provided a dental curable composition including (a) a polymerizable monomer and (b) a filler in a weight ratio of 10:90 to 70:30, and including 0.01 to 10 parts by weight of (c) a polymerization initiator and 0.001 to 1 part by weight of (d) a chain transfer agent being a terpenoid compound based on 100 parts by weight of the polymerizable monomer (a).

公开(公告)号：US11737957B2

公开(公告)日：2023-08-29

申请号：US16117044

申请日：2018-08-30

Applicant: SHOFU INC.

Inventor： Toshiyuki Nakatsuka ,  Toshio Kitamura ,  Masanori Goto ,  Tomohiro Kai ,  Satoshi Takano ,  Yoshiyuki Jogetsu

IPC: A61K6/00 ,  A61C13/087 ,  C08K9/02 ,  C08L33/04 ,  A61K6/887 ,  A61K6/60 ,  A61K6/76

CPC classification number: A61K6/887 ,  A61C13/087 ,  A61K6/60 ,  A61K6/76 ,  C08K9/02 ,  A61K6/887 ,  C08L33/04

Abstract: A dental curable composition capable of use as a dental material that can substitute part or all of a natural tooth, in particular, a resin material for dental cutting and machining in the field of dental care. When a block shape usable as the resin material is produced, while mechanical properties and aesthetic properties required for a crown prosthetic appliance are maintained, the dental curable composition can be molded and processed with pressure and heating while strain generated in the block is reduced and no cracks and chipping occur. The dental curable composition includes (a) a polymerizable monomer and (b) a filler in a weight ratio of 10:90 to 70:30, and 0.01 to 10 parts by weight of (c) a polymerization initiator and 0.001 to 1 part by weight of (d) a chain transfer agent being a terpenoid compound based on 100 parts by weight of the polymerizable monomer (a).

公开(公告)号：US11033369B2

公开(公告)日：2021-06-15

申请号：US15181561

申请日：2016-06-14

Applicant: SHOFU INC.

Inventor： Masanori Goto ,  Yusei Kadobayashi

IPC: A61C13/09 ,  A61C13/00

Abstract: In color reproduction for a dental restorative material, in order to achieve a color that closely matches the color of the natural tooth, one technique that is used is to form a mill blank by laminating layers of materials having different colors. However, misidentification of layers frequently occurs. The present invention is a dental mill blank having a plurality of layers and the dental mill blank has a visual identifying portion by which the plurality of layers are visually identifiable. The visual identifying portion may be provided by color or by structure. Providing the visual identifying portion by color refers to coloring the surface of a layer of the dental mill blank and providing the visual identifying portion by structure refers to forming microscopic or macroscopic irregularities in the entire periphery or part of a layer surface.

公开(公告)号：US11141247B2

公开(公告)日：2021-10-12

申请号：US15178644

申请日：2016-06-10

Applicant: SHOFU INC.

Inventor： Mitsuji Teramae ,  Masanori Goto

IPC: B32B7/02 ,  A61C13/08 ,  A61K6/16 ,  A61K6/887 ,  A61C13/00 ,  A61C13/087 ,  A61C13/09

Abstract: The present invention relates to a composite material which can be used as a dental prosthesis device (crown, bridge), and specifically, relates to a composite material including a curable resin and a fiber material, and more specifically relates to a block-like composite material for dental cutting and processing characterized by having a multilayered structure including at least two layers having different transparencies. There are no technical information relating to a color tone and a transparency of the fiber material. To provide a block-like composite material for dental cutting and processing, wherein the block-like composite material has a multilayered structure including at least two layers having different transparencies, and the each layer includes a curable resin and a fiber material.

公开(公告)号：US10988403B2

公开(公告)日：2021-04-27

申请号：US16256072

申请日：2019-01-24

Applicant: SHOFU INC.

Inventor： Keita Kawata ,  Masanori Goto ,  Kenji Kono

IPC: C03C3/087 ,  A61C8/00 ,  C03C3/093

Abstract: To provide a glass composition which can be used for a dental porcelain or a dental ceramics coloring material, and has low temperature meltability, acid resistance and preservation stability under the humid environment which are required for a dental porcelain or a dental ceramics coloring material, and a dental porcelain and dental ceramics coloring material which contain the glass composition of the present disclosure. To provide a low melting glass composition with softening point (Ts) less than 600° C. comprising as a component; SiO2: 55.0 to 75.0 wt. %, B2O3: 6.1 to 12.0 wt. %, Al2O3: 2.0 to 8.0 wt. %, ZnO: 2.0 to 8.5 wt. % and two or more kinds of alkali metal oxide: 10.5 to 20.0 wt. %.

公开(公告)号：US09839498B2

公开(公告)日：2017-12-12

申请号：US15362867

申请日：2016-11-29

Applicant: SHOFU INC.

Inventor： Masanori Goto ,  Toshio Kitamura ,  Mitsuji Teramae

IPC: A61C13/00 ,  A61C13/09 ,  A61C13/08 ,  A61C5/10

CPC classification number: A61C13/0022 ,  A61C5/10 ,  A61C5/30 ,  A61C13/082 ,  A61C13/087 ,  A61C13/09

Abstract: To provide a multilayer resin material for dental milling and machining, comprising an inorganic filler in a content of 40% by weight or more and a plurality of layers different in transparency and color tone from each other, wherein the thickness of the uppermost layer (U) and the thickness of the lowermost layer (L) are each 1 mm or more, the contrast ratios (uppermost layer: CU, lowermost layer: CL) as indices for the transparency of the uppermost layer (U) and the transparency of the lowermost layer (L) satisfy the following relations: 0.30≦CU≦0.60 0.55≦CL≦0.90 CU

公开(公告)号：USD798685S1

公开(公告)日：2017-10-03

申请号：US29562888

申请日：2016-04-29

Applicant: SHOFU INC.

Designer： Norihiro Matsui ,  Tomohiro Kai ,  Masanori Goto