公开(公告)号：US20190038515A1

公开(公告)日：2019-02-07

申请号：US15760535

申请日：2016-10-27

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Junichiro YAMAGAWA ,  Tatsuya YAMAZAKI ,  Takuma MATSUO ,  Takuya SUZUKI

IPC: A61K6/00 ,  A61K6/083

Abstract: To provide a cured product having high fracture energy, provided are a curable composition, including: organic-inorganic composite particles; (a polymerizable monomer; a polymerization initiator; and inorganic particles, in which a cured body formed by curing the curable composition includes: a matrix formed by curing all constituent components of the curable composition except for the organic-inorganic composite particles; and the organic-inorganic composite particles dispersed and contained in the cured body, and in which an elastic modulus M of the matrix is larger than an elastic modulus P of the organic-inorganic composite particles by 3.0 GPa or more, a curable composition for dental use, and an organic-inorganic composite particle for dental use.

公开(公告)号：US20210260559A1

公开(公告)日：2021-08-26

申请号：US17255295

申请日：2019-08-15

Applicant: Tokuyama Dental Corporation

Inventor： Tatsuya YAMAZAKI ,  Masaki KINOSHITA

IPC: B01J19/12 ,  B01J19/06 ,  A61C13/15 ,  B29C35/08 ,  B29C35/00

Abstract: [Abstract] A polymerization apparatus according to an embodiment of the present invention includes: a light irradiator; and a polymerization vessel. The light irradiator includes a first casing and a light source assembly. The first casing includes a light source chamber defined by cylindrical side walls, a ceiling, and a floor including a light-transmissive window member. The light source assembly includes a base having a light-emitting surface on which a plurality of light-emitting diodes is disposed in a predetermined pattern and a heat-dissipating surface to which a heat sink is joined, and the light source assembly is disposed within the light source chamber so that the light-emitting surface faces the light-transmissive window member. The polymerization vessel includes a polymerization cup and a second casing. The polymerization cup has a frustoconical or substantially frustoconical shape that opens upward and increases in diameter upward, and is capable of housing an object therein. The second casing is a bottomed cylindrical or box-shaped casing having an opening at the apex thereof, the polymerization cup being attachably/detachably housed in the second casing via the opening. In this polymerization apparatus, light that has been emitted by the plurality of light-emitting diodes of the light irradiator and has passed through the light-transmissive window member is applied to the inside of the polymerization cup of the polymerization vessel.

公开(公告)号：US20210196440A1

公开(公告)日：2021-07-01

申请号：US16488813

申请日：2018-02-28

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Tatsuya YAMAZAKI ,  Hideki KAZAMA

IPC: A61C13/15 ,  A61C13/08 ,  B29C35/08

Abstract: The present invention provides a photopolymerization device having: a polymerization container; and a body part which is thermally connected to the polymerization container and which is formed by including a light source for applying light to the inside of the polymerization container. The photopolymerization device is characterized by being configured such that heat generated from the light source is guided to the polymerization container side.

公开(公告)号：US20220142757A1

公开(公告)日：2022-05-12

申请号：US17440218

申请日：2020-03-04

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Mana TOYODA ,  Ayumu GYAKUSHI ,  Tatsuya YAMAZAKI

IPC: A61C13/01 ,  A61C13/10 ,  A61C13/097 ,  A61C11/08

Abstract: A denture including a denture base where artificial teeth are fixed, the denture base includes a reference denture base member to which the artificial teeth are fixed and an adjusting member formed of a cured body of a curable denture base material, the adjusting member being joined to the reference denture base member, the adjusting member includes an anterior adjusting member that is joined to a mucosal surface of a base anterior region to form an anterior region together with the base anterior region, and a posterior adjusting member that is joined to a mucosal surface of a base posterior region to form a posterior region together with the base posterior region, and at least parts of base edge side distal end regions in the anterior region and the posterior region are formed of the anterior adjusting member and the posterior adjusting member, respectively.

公开(公告)号：US20210137652A1

公开(公告)日：2021-05-13

申请号：US16611699

申请日：2018-05-10

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Tatsuya YAMAZAKI ,  Kei NAKASHIMA ,  Youichi YAMAMOTO ,  Hitoshi MOTOHASHI

IPC: A61C11/00 ,  A61C13/07 ,  A61C13/271 ,  A61C19/05

Abstract: Provided is a reference denture alignment jig which guides reference dentures into an oral cavity or to an articulator in which upper and lower edentulous jaw models are fixed, and aligns the reference dentures in the oral cavity or in the articulator in which upper and lower edentulous jaw models are fixed, the jig having a reference denture holding portion for holding reference dentures.

公开(公告)号：US20190083210A1

公开(公告)日：2019-03-21

申请号：US15755770

申请日：2016-08-26

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Kei NAKASHIMA ,  Tatsuya YAMAZAKI ,  Ayumu GYAKUSHI ,  Miki HITOMI ,  Koji MATSUSHIGE ,  Masanao HASHIGUCHI

IPC: A61C13/00 ,  A61K6/093 ,  A61C13/08 ,  A61C13/01

Abstract: A maxilla standard dental plate configured so that if the length of a line segment PQ which connects a point P corresponding to the left-side pterygomaxillary notch at the plate posterior border and a point Q corresponding to the right-side pterygomaxillary notch at the plate posterior border is 1, the length of a line segment OM which connects a point O corresponding to the maxillary labial frenulum at the exact middle of the labial denture border and a median point M of the line segment PQ is 0.76-0.98.

公开(公告)号：US20240366348A1

公开(公告)日：2024-11-07

申请号：US18285805

申请日：2022-05-13

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Yusaku SHINAGAWA ,  Ayumu GYAKUSHI ,  Tatsuya YAMAZAKI

IPC: A61C13/01 ,  B65D1/34 ,  B65D81/18

Abstract: Provided are a denture base material package capable of improving operation efficiency while securing quality, without being influenced by an operator's skill level, in the production of a denture by a production method for a denture involving using a reference denture, and a production method for a denture involving using the same. A denture base material package includes: a string-shaped molded body obtained by molding a photocurable denture base material having plastic deformability into a string shape; and a light-shielding member having an internal space kept airtight, and accommodating the string-shaped molded body in the internal space. The light-shielding member includes (i) a tray having a groove for accommodating the string-shaped molded body, and (ii) at least one kind of member selected from the group consisting of: a bag body configured to house the tray thereinside; and a lid member configured to seal an opening of the groove.

公开(公告)号：US20230137898A1

公开(公告)日：2023-05-04

申请号：US17758562

申请日：2021-02-26

Applicant: Tokuyama Dental Corporation

Inventor： Akiko IWASAKI ,  Tatsuya YAMAZAKI ,  Takeshi SUZUKI

IPC: A61C13/00 ,  C09J7/10 ,  C09J7/30 ,  A61C13/01 ,  A61C13/10 ,  B29C64/124 ,  B33Y80/00 ,  B33Y10/00

Abstract: To provide a method of producing a plate denture using a stereolithography 3D printer, which is capable of producing a plate denture in a short time with a more simplified production process, the plate denture exhibiting excellent occlusion. [Solving Means] The problem is solved by a method of producing a plate denture, including: adhering an artificial tooth and a denture base photochemically solidified by a stereolithography 3D printer to each other by polymerizing an unpolymerized curable composition for stereolithography present on a surface of the denture base. Further, stronger adhesion between the artificial tooth and the denture base is achieved by mixing, in the curable composition for stereolithography, a polymerization initiator other than a photopolymerization initiator for stereolithography.

公开(公告)号：US20210244519A1

公开(公告)日：2021-08-12

申请号：US17273624

申请日：2019-08-21

Applicant: Tokuyama Dental Corporation

Inventor： Masaki KINOSHITA ,  Tatsuya YAMAZAKI

IPC: A61C13/00 ,  C08F2/44 ,  C08F2/50 ,  C08F265/06 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00

Abstract: [Object] To provide a photocurable composition capable of reducing the amount of surface-unpolymerized-products of an obtained cured body and achieving a high photocuring depth, and to provide, particularly, a photocurable composition that can be suitably used in a photocuring-type denture reline material.
[Solving Means] A photocurable composition includes: a polymerizable monomer such as 2-methacryloxyethyl propionate and 1,9-nonamethylene methacrylate; resin particles such as spherical poly(ethyl methacrylate) particles; an α-diketone compound such as camphorquinone; a tertiary amine compound such as ethyl p-dimethylaminobenzoate; and an α-hydroxycarboxylic acid having an acid dissociation constant of 3.0 or more in water (at 25° C.) and two or more carbonyl groups in the same molecule, such as malic acid.