公开(公告)号：US20250083380A1

公开(公告)日：2025-03-13

申请号：US18290637

申请日：2022-07-15

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Eibu Sakata ,  Kei Nakashima

IPC: B29C64/124 ,  A61K6/884 ,  B29C64/386 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y50/00 ,  B33Y70/10 ,  C08F2/48

Abstract: Provided is a method for producing a three-dimensional manufactured product, the method including: a shaping step of performing a vat photopolymerization process using a liquid photocurable composition containing a radically-polymerizable monomer, an inorganic filler, a photopolymerization initiator, an activating light absorbent, and a polymerization inhibitor, to obtain a shaped product having a shape corresponding to the shape of a target article and containing an effective amount of the photopolymerization initiator in the interior thereof; and a post-polymerization step of irradiating the shaped product with activating light at an irradiation intensity of 10 to 10,000 mW/cm2, and then heating the shaped product at a temperature of 50° C. or higher and lower than 110° C., to polymerize an unpolymerized component contained in the shaped product. Further, provided is a method for producing a dental restoration, including producing the dental restoration according to this method for producing a three-dimensional manufactured product.

公开(公告)号：US12195332B2

公开(公告)日：2025-01-14

申请号：US17057341

申请日：2019-05-21

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Ayumi Takahashi ,  Eibu Sakata ,  Kouichirou Hirata ,  Hideki Kazama

IPC: C01B11/04

Abstract: A method for producing a weakly acidic hypochlorous acid aqueous solution comprises (A) an ion-exchange step for generating molecular hypochlorous acid dissolved in a mixed solution by mixing a raw material aqueous solution composed of an aqueous solution of a metal salt of hypochlorous acid with an acidic ion-exchange resin to perform ion exchange between the metal ions and the hydrogen ions, and (B) a separation step for separating the acidic ion-exchange resin from the mixed solution after the ion-exchange step and obtaining weakly acidic hypochlorous acid aqueous solution in which molecular hypochlorous acid is dissolved.

公开(公告)号：US11779447B2

公开(公告)日：2023-10-10

申请号：US17056665

申请日：2019-05-31

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Hiroshi Morisaki ,  Naoto Shiohira

IPC: A61C19/10 ,  A61C13/087 ,  G09B23/28

CPC classification number: A61C19/10 ,  A61C13/087 ,  G09B23/283 ,  A61C2201/002

Abstract: [Object] To provide, for a composite resin (CR) having a wide range of applicable colors (shades) (wide-ranging color applicable CR), such as a CR having light diffusion properties and a CR that produces color by means of a structural color, a technology with which an excellent effect, specifically, an increased breadth (number) of applicable shades in comparison to an existing CR other than a wide-ranging color applicable CR, can be achieved.
[Solving Means] For example, in a demonstration instrument, a plurality of samples is prepared, a single wide-ranging color applicable CR has been used to restore a cavity in artificial teeth each having a different shade, the cavity being formed at a predetermined position of the artificial teeth, and the plurality of samples is disposed side by side and fixed on a display surface of a display plate, thereby making it possible to compare/contrast conditions of restored portions of the samples to each other and the color tone applicability thereof to those of a teeth to be restored.

公开(公告)号：US11701304B2

公开(公告)日：2023-07-18

申请号：US16956917

申请日：2018-12-26

Applicant: Tokuyama Dental Corporation

Inventor： Takuya Suzuki ,  Hideki Kazama

IPC: A61F2/00 ,  A61K8/72 ,  C08G61/02 ,  C08F2/46 ,  C08F2/50 ,  C08G61/04 ,  A61K6/893 ,  A61K6/62 ,  A61K6/17 ,  B29C39/00 ,  B29C39/02 ,  B29C39/38 ,  C08G18/32 ,  C08G18/34 ,  C08G18/38 ,  C08G18/76 ,  B29K275/00 ,  B29K509/02

CPC classification number: A61K6/893 ,  A61K6/17 ,  A61K6/62 ,  B29C39/003 ,  B29C39/02 ,  B29C39/38 ,  C08G18/3206 ,  C08G18/341 ,  C08G18/348 ,  C08G18/3876 ,  C08G18/7621 ,  C08G18/7642 ,  B29K2275/00 ,  B29K2509/02

Abstract: The dental restorative material of the present invention is a dental restorative material that contains a resin matrix and an inorganic filler in an amount of 25 to 1,000 parts by mass per 100 parts by mass of the resin matrix, and in the dental restorative material, the resin matrix contains a polyurethane resin, and the inorganic filler has an average particle diameter of 0.001 to 100 μm. According to the present invention, a dental restorative material that has a high bending strength and a high surface hardness, and is excellent in transparency and cutting workability, and a resin material for dental cutting work containing the same can be provided.

公开(公告)号：US20230165759A1

公开(公告)日：2023-06-01

申请号：US17927466

申请日：2021-04-28

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Hiroshi Morisaki ,  Hironobu Akizumi

IPC: A61K6/887 ,  A61K6/17 ,  A61K6/818 ,  A61K6/64 ,  A61K6/62

CPC classification number: A61K6/887 ,  A61K6/17 ,  A61K6/818 ,  A61K6/64 ,  A61K6/62

Abstract: Provided is a dental curable composition containing: (A) a porous organic-inorganic composite filler which comprises an organic resin component obtained by polymerizing a polymerizable monomer component (a) including at least 50 mass % of a polymerizable monomer having a hydrogen-bonding functional group, and an inorganic component composed of a plurality of inorganic particles; (B) a polymerizable monomer component including at least 10 mass % of a polymerizable monomer having a hydrogen-bonding functional group; and (C) a polymerization initiator, wherein (C) the polymerization initiator comprises, as photopolymerization initiators, (c1) a photosensitizer compound, (c2) a reducing agent, and (c3) a photoacid generator composed of an aryliodonium salt compound, and the content of the aryliodonium salt compound is 0.1-5 parts by mass with respect to 100 parts by mass of the total mass of (B) the polymerizable monomer component.

公开(公告)号：US20220054371A1

公开(公告)日：2022-02-24

申请号：US17275717

申请日：2019-09-03

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Naoyuki OYA ,  Hideki KAZAMA ,  Kouichirou HIRATA ,  Jyunichirou YAMAGAWA ,  Tomonao SHIMIZU ,  Ryuuta KIRA ,  Ayumu TAKAHASHI ,  Eibu SAKATA

IPC: A61K8/20 ,  A61K8/04 ,  A61Q11/00

Abstract: The present invention provides a tooth cleaning composition containing a weakly acidic hypochlorite solution that has an effective chloride concentration of 100-2000 (mass ppm) and a pH of 3.0-6.5.

公开(公告)号：US11058608B2

公开(公告)日：2021-07-13

申请号：US16605617

申请日：2018-04-16

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Hiroshi Morisaki ,  Hironobu Akizumi

IPC: A61K6/887 ,  A61K6/76 ,  A61K6/17 ,  C08F122/20 ,  C08F122/22 ,  C08K3/34 ,  C08K7/18

Abstract: Provided is a method for producing a dental curable composition, the method includes mixing a polymerizable monomer (A); a spherical filler (B) having an average primary particle diameter within a range of 230 nm to 290 nm; a spherical filler (C) having an average primary particle diameter within a range of 100 nm to 500 nm, the spherical filler having an average primary particle diameter different from that of the spherical filler (B); and a polymerization initiator (D), in which 90% or more in number of the individual particles constituting the spherical filler (B) and the spherical filler (C) are present in a range of ±5% from the average primary particle diameter, and the refractive indices of the spherical filler (B) and the spherical filler (C) are larger than the refractive index of a polymer of a polymerizable monomer (A).

公开(公告)号：US10973740B2

公开(公告)日：2021-04-13

申请号：US16318610

申请日：2017-07-20

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Miki Hitomi ,  Ayumu Gyakushi ,  Kei Nakashima

IPC: A61K6/887 ,  A61K6/35 ,  A61K6/20 ,  A61K6/00 ,  A61K6/60 ,  A61K6/831

Abstract: The present invention provides a powder-liquid type denture base liner comprising: a powder material including (A) uncrosslinked resin particles, (B) an organic peroxide, (C) a pyrimidine trione derivative, and (D) an organic metal compound; and a liquid material including (E) a radical polymerizable monomer and (F) an aromatic amine compound, wherein the powder-liquid denture base liner is characterized in that the (C) pyrimidine trione derivative is 0.0002-1.0 mass parts per 100 mass parts of (E) radical polymerizable monomer.

公开(公告)号：US20210095055A1

公开(公告)日：2021-04-01

申请号：US16078000

申请日：2017-03-08

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Koji FURUHASHI ,  Hironobu AKIZUMI

IPC: C08F2/50 ,  C08K3/36 ,  C08K3/22 ,  A61K6/62

Abstract: A photopolymerization initiator including (a) a photosensitizer, (b) a tertiary amine compound and (c) an aryliodonium salt wherein, as the aryliodonium salt (c), there is selected the one that generates an acid having a dissociation constant of not less than −3.0 in water of 25° C.

公开(公告)号：US20190300472A1

公开(公告)日：2019-10-03

申请号：US15506526

申请日：2015-08-25

Applicant: Tokuyama Dental Corporation

Inventor： Yoshitaka INAKI ,  Eibu SAKATA ,  Takeshi SUZUKI

IPC: C07C69/92 ,  C07C67/10 ,  C08F20/30 ,  C08F20/38 ,  C07C323/62 ,  C07C319/20 ,  C07C317/44 ,  C07C315/04 ,  C07C69/76

Abstract: A polymerizable monomer, which is represented by the following general formula (1): in the general formula (1), X represents a divalent group, Ar1 and Ar2 each represent an aromatic group having a valence selected from divalence to tetravalence, and may be identical to or different from each other, L1 and L2 each represent a hydrocarbon group having a main chain with a number of atoms within a range of from 2 to 60 and having a valence selected from divalence to tetravalence, and may be identical to or different from each other, R1 and R2 each represent a hydrogen atom or a methyl group, and m1, m2, n1, and n2 each represent an integer selected from a range of from 1 to 3; and a method of producing the polymerizable monomer, a curable composition and a resin member each using the polymerizable monomer.