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公开(公告)号：US20190192386A1
公开(公告)日：2019-06-27
申请号：US16328984
申请日：2017-08-30
Applicant: TOKUYAMA DENTAL CORPORATION
Inventor： Keishi FUKUDOME , Hironobu AKIZUMI
Abstract: A photocurable composition is provided, which is characterized by comprising a polymerizable monomer component (A), an inorganic filler component (B) having an average particle diameter of 0.07 μm or more, an organic-inorganic composite filler component (C) comprising an inorganic filler component (C1) and an organic polymer component (C2) and having an average particle diameter of 0.5 μm or more, and a photopolymerization initiator (D), wherein the inorganic filler component (B) and the organic-inorganic composite filler component (C) are contained in a total amount of 100 to 1500 parts by mass relative to 100 parts by mass of the polymerizable monomer component (A), and the polymerizable monomer component (A), 90 parts by mass or more of the inorganic filler component (B) and 90 parts by mass or more of the organic-inorganic composite filler component (C) are selected in such a manner that specific requirements can be satisfied.
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公开(公告)号：US10299897B2
公开(公告)日：2019-05-28
申请号：US15107288
申请日：2015-01-06
Applicant: TOKUYAMA DENTAL CORPORATION
Inventor： Ayumu Gyakushi , Kouji Matsushige
Abstract: The dental plate liner includes: a paste (i) containing (A) a (meth)acrylic acid-based polymer, and a fluorine-containing (meth)acrylic acid-based polymerizable monomer in which (A) the (meth)acrylic acid-based polymer has a solubility of less than 20 mass %; and a paste (ii) containing a (meth)acrylic acid-based polymerizable monomer in which (A) the (meth)acrylic acid-based polymer has a solubility of 20 mass % or more, and a filler, in which at least one paste selected from the group consisting of the paste (i) and the paste (ii) contains a polymerization initiator, and in which the dental plate liner is used through mixing of the paste (i) and the paste (ii) immediately before use.
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13.发明申请公开(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
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.
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公开(公告)号：US20180303587A1
公开(公告)日：2018-10-25
申请号：US15770220
申请日：2016-10-25
Applicant: Tokuyama Dental Corporation
Inventor： Junichiro YAMAGAWA , Tomonao SHIMIZU , Yuko NAGASAWA
IPC: A61C13/00 , A61C13/08 , A61C13/09 , C08K3/36 , C08K3/22 , A61K6/04 , A61K6/06 , A61K6/087 , C08J5/00 , B29C45/00
CPC classification number: A61C13/0022 , A61C13/0004 , A61C13/081 , A61C13/087 , A61C13/09 , A61K6/027 , A61K6/046 , A61K6/0612 , A61K6/087 , B29C45/0001 , B29C45/0055 , B29K2101/12 , B29K2105/16 , B29L2031/7532 , C08J5/00 , C08J2371/10 , C08K3/00 , C08K3/22 , C08K3/36 , C08K2003/2241 , C08L101/00
Abstract: A resin block that can be favorably used for obtaining dental prosthetics through the milling work, containing very little voids, having excellent property for being cut, exhibiting excellent appearance and mechanical strength, and without permitting the formation of defective products. The resin block contains a thermoplastic resin having a fluidizing temperature in a range of 310 to 500° C. and inorganic particles in an amount of 30 to 150 parts by mass per 100 parts by mass of said thermoplastic resin. The inorganic particles are at least one kind of inorganic oxide particles selected from the group consisting of silica particles, silica composite particles of silica and other metal oxides, titania particles, and titania composite particles of titania and other metal oxides. The resin block has a thick portion of a thickness of at least not less than 5 mm, and does not contain any void whose length is not less than 1.0 mm.
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15.发明申请公开(公告)号：US20170253555A1
公开(公告)日：2017-09-07
申请号：US15506520
申请日：2015-08-25
Applicant: TOKUYAMA DENTAL CORPORATION
Inventor： Yoshitaka INAKI , Eibu SAKATA , Takeshi SUZUKI
IPC: C07C69/82 , C07C67/26 , C08F222/20 , C07C69/76
CPC classification number: C07C69/82 , C07C67/26 , C07C69/76 , C07C2603/24 , C08F20/30 , C08F222/20 , C09J4/00 , C08F222/1006
Abstract: Provided are: a polymerizable monomer excellent in mechanical strength of its cured product and excellent also in handling property with low viscosity even under a room temperature environment, specifically, a polymerizable monomer, which is represented by the following general formula (1): in the general formula (1), Ar1 and Ar2 each represent an aromatic group having a valence selected from divalence to tetravalence, L1 and L2 each represent a divalent hydrocarbon group having a main chain with a number of atoms within a range of from 2 to 10 and containing at least one hydroxy group, and may be identical to or different from each other, R1 and R2 each represent hydrogen or a methyl group, q represents 0 or 1, and m1 and m2 each represent 1 or 2; and a method of producing the polymerizable monomer, a curable composition and a resin member each using the polymerizable monomer.
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Patent Agency Ranking
公开(公告)号：US09549879B2
公开(公告)日：2017-01-24
申请号：US14383347
申请日：2013-03-05
Applicant: Tokuyama Dental Corporation
Inventor： Megumi Sato , Kei Nakashima , Koji Matsushige
CPC classification number: A61K6/083 , A61K6/0047 , C08L33/10
Abstract: A powder-liquid dental curable material kit composed of (A) a liquid material and (B) a powder material, wherein the liquid material (A) contains (a1) a radically polymerizable (meth)acrylic monomer, (a2) an organic halogen compound and (a3) a radical chain transfer agent; the powder material (B) contains (b1) non-crosslinked resin particles, (b2) a pyrimidinetrione compound and (b3) an organic metal compound; and (Z) a peroxide is blended in at least one of the liquid material (A) and the powder material (B). This curable material kit is capable of reducing the heat generation during the curing of a curable material which is a mixture of the liquid material (A) and the powder material (B) and is not susceptible to the excessive prolongation of the curing time even when the curable material is cured by a brush-on technique, thereby ensuring an appropriate curing time for both of a brush-on technique and a kneading technique.
Abstract translation: 一种由（A）液体材料和（B）粉末材料组成的粉末液体牙科用固化材料试剂盒，其中液体材料（A）含有（a1）可自由基聚合的（甲基）丙烯酸单体，（a2）有机卤素 化合物和（a3）基团链转移剂; 粉末材料（B）含有（b1）非交联树脂颗粒，（b2）嘧啶四酮化合物和（b3）有机金属化合物; 和（Z）过氧化物混合在至少一种液体材料（A）和粉末材料（B）中。 该可固化材料试剂盒能够减少作为液体材料（A）和粉末材料（B）的混合物的可固化材料的固化期间的发热，并且即使当固化时也不会过度延长固化时间 通过刷涂技术固化可固化材料，从而确保刷涂技术和捏合技术的适当固化时间。
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公开(公告)号：US20250101205A1
公开(公告)日：2025-03-27
申请号：US18728369
申请日：2022-12-13
Applicant: TOKUYAMA DENTAL CORPORATION
Inventor： Naoyuki Oya , Hiroshi Morisaki , Hironobu Akizumi
Abstract: Provided is a method for producing composite oxide particles consisting of spherical particles having a predetermined average primary particle diameter within a range of 230 to 350 nm, wherein 90% or more of a total number of the spherical particles have primary particle diameters within a range of the predetermined average primary particle diameter plus or minus 5%, each particle constituting the spherical particles is a core-shell particle comprising a silica-based composite oxide particle and a silica layer that coats a surface of the silica-based composite oxide particle, and the silica layer has an average thickness of 3 to 15 nm, and a production method thereof. Additionally, a curable composition comprising such composite oxide particles is provided.
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公开(公告)号：US12232913B2
公开(公告)日：2025-02-25
申请号：US17440218
申请日：2020-03-04
Applicant: TOKUYAMA DENTAL CORPORATION
Inventor： Mana Toyoda , Ayumu Gyakushi , Tatsuya Yamazaki
IPC: A61C13/01 , A61C11/08 , A61C13/00 , A61C13/097 , A61C13/10
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.
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19.发明公开公开(公告)号：US20240335269A1
公开(公告)日：2024-10-10
申请号：US18294073
申请日：2022-08-22
Applicant: Tokuyama Dental Corporation
Inventor： Yuko NAGASAWA , Hidenori MIMAKI
Abstract: [Object] Provided is a method of previously confirming an appearance color of a crown after mounted on an abutment tooth of a patient, the crown being manufactured by CAD/CAM using a milling block made of a non-metal material and having a specific surface color pattern.
[Solving Means] Using an instrument kit or demonstration instrument including a crown sample and an abutment tooth sample, the crown sample being manufactured by CAD/CAM using a milling block substantially identical to a milling block to be used for manufacturing the crown and including an open cavity, the abutment tooth sample including an abutment tooth portion having a shape and a size with which the abutment tooth portion can be freely inserted into the open cavity, and having a surface color pattern substantially identical to a color of an abutment tooth of a patient, an appearance color of the crown sample is confirmed before and after the abutment tooth portion is inserted into the open cavity.-
公开(公告)号：US20240122814A1
公开(公告)日：2024-04-18
申请号：US18549020
申请日：2022-03-31
Applicant: Tokuyama Dental Corporation
Inventor： Tetsuro MORIMOTO , Keishi FUKUDOME
Abstract: [Object] To provide a dental adhesive composition that has high adhesiveness even to a silica ceramic restoration by containing a silane coupling material, can be stably preserved for a long period of time even with presence of both a silica filler and the silane coupling material, and is suitable as dental cement.
[Solving Means] A dental adhesive composition includes: 100 parts by mass of a polymerizable monomer component (A) formed of an acidic group-containing polymerizable monomer and an acidic group-free polymerizable monomer; 50 to 1000 parts by mass of a silica filler (B); and 0.1 to 20 parts by mass of a silane coupling material (C), in which 97 mass % or more of the silane coupling material (C) is an α-branched alkoxysilane silane coupling material formed of an organosilicon compound in which a monovalent radically polymerizable organic residue and a branched alkoxy group are bonded to a silicon atom, the monovalent radically polymerizable organic residue having at least one radically polymerizable functional group, the branched alkoxy group having 3 to 5 carbon atoms and a branch at an α position.
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