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公开(公告)号：US11065183B2
公开(公告)日：2021-07-20
申请号：US16605602
申请日：2018-04-16
Applicant: TOKUYAMA DENTAL CORPORATION
Inventor： Takuma Matsuo , Hironobu Akizumi
Abstract: Provided is a curable composition comprising a polymerizable monomer (A); spherical particles (B) having an average primary-particle diameter in a range of 230 nm to 1,000 nm; and a polymerization initiator (C), in which 90% or more of individual particles constituting the spherical particles (B) lies in a range of ±5% based on the average primary-particle diameter, and the refractive index of the spherical particles (B) is larger than the refractive index of a polymer of the polymerizable monomer (A). When a 1 mm-thick cured product is formed from the curable composition and the Y value (Yb) of the colored light of the cured product on a black background and the Y value (Yw) of the colored light of the cured product on a white background are each measured using a color difference meter, the ratio therebetween, Yb/Yw, being within a range of 0.2 to 0.5.
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公开(公告)号：US20210095113A1
公开(公告)日：2021-04-01
申请号：US17041045
申请日：2019-03-28
Applicant: Tokuyama Dental Corporation
Inventor： Takuma MATSUO , Hironobu AKIZUMI
IPC: C08L63/00 , C08K7/18 , C08L33/08 , C08L37/00 , A61C13/087 , A61K6/887 , A61K6/891 , A61C5/70 , A61C13/00 , A61C13/08
Abstract: A resin block suitable for dental cutting work may include a resin matrix (A) and spherical filler (B) whose average particle size ranges from 230 to 1000 nm. When 10 mm thick and measured with a colorimeter, the lightness (V) is less than 5.0 and the saturation (C) is less than 2.0 in a Munsell color system of colored light on a black background and a white background. When 1 mm thick, the lightness (V) is less than 5.0 and the saturation (C) is 0.05 or more on a black background, but on a white background, the lightness (V) is 6.0 or more and the saturation (C) is less than 2.0 for Munsell colored light. Resin blocks can be used for dental restoration such that dental prostheses produced from the block not using a pigment/dye are compatible with natural teeth color tone, and the color tone compatibility endures.
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公开(公告)号：US10758457B2
公开(公告)日：2020-09-01
申请号：US15769234
申请日：2016-10-21
Applicant: TOKUYAMA DENTAL CORPORATION
Inventor： Hironobu Akizumi , Chika Toriyabe
Abstract: Provided is a curable composition including a polymerizable monomer component (A), a spherical filler (B) having an average particle size within the range of 230-1000 nm, and a polymerization initiator (C), wherein the curable composition is characterized by having a value (V) of less than 5 and a chroma (C) of 0.05 or higher in colorimetric values according to the Munsell Color System in colored light on a black background, and a value (V) of 6 or higher and a chroma (C) of less than 2 in colorimetric values according to the Munsell Color System in colored light on a white background, each of the values (V) and chroma (C) being measured using a color difference meter in a state in which a 1-mm-thick cured article has been formed.
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Patent Agency Ranking
公开(公告)号：US20190216689A1
公开(公告)日：2019-07-18
申请号：US16318610
申请日：2017-07-20
Applicant: TOKUYAMA DENTAL CORPORATION
Inventor： Miki HITOMI , Ayumu GYAKUSHI , Kei NAKASHIMA
CPC classification number: A61K6/0017 , A61K6/00 , A61K6/0047 , A61K6/027 , A61K6/083
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.
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95.发明授权公开(公告)号：US09931180B2
公开(公告)日：2018-04-03
申请号：US14890468
申请日：2014-05-14
Applicant: Tokuyama Dental Corporation
Inventor： Masanao Hashiguchi , Nobutoshi Yamaguchi , Kei Nakashima
IPC: B65D25/08 , A61C5/06 , A61C13/00 , B65D81/32 , A61C19/00 , A61C5/50 , A61C5/60 , A61C5/66 , A61C5/68
CPC classification number: A61C5/50 , A61C5/60 , A61C5/66 , A61C5/68 , A61C13/00 , A61C13/0024 , A61C19/005 , A61C2202/00 , A61C2202/01 , B65D81/3266 , A61K6/083 , C08L33/08 , C08L33/10 , A61K6/0023
Abstract: A dental powder/liquid material-containing preparation accommodation bag, which suppresses entrainment of air in mixing a powder material and a liquid material for dispensing, is provided. A powder material 8 is accommodated in a powder material accommodation chamber 3 of a bag body 2, while a liquid material 9 dissolving the powder material 8 and changing into a pasty form, in cooperation with the powder material 8 is accommodated in a liquid material accommodation chamber 4 partitioned from the powder material accommodation chamber 3 by a weakened section 7. The weakened section 7 is ruptured by applying a pressing force to the bag body 2. As a result, the powder material accommodation chamber 3 and the liquid material accommodation chamber 4 communicate, to feed the liquid material accommodated in the liquid material accommodation chamber 4 into the powder material accommodation chamber 3. Then, the powder material 8 and the liquid material 9 changing into the pasty form are pressed within the powder material accommodation chamber 3 from the surfaces of the bag body 2 for dispensing.
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公开(公告)号：US20150038614A1
公开(公告)日：2015-02-05
申请号：US14383347
申请日：2013-03-05
Applicant: Tokuyama Dental Corporation
Inventor： Megumi Sato , Kei Nakashima , Koji Matsushige
IPC: A61K6/083
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：US08946318B2
公开(公告)日：2015-02-03
申请号：US14027936
申请日：2013-09-16
Applicant: Tokuyama Dental Corporation
Inventor： Hironobu Akizumi , Chika Toriyabe
CPC classification number: A61C5/04 , A61C5/50 , A61K6/0002 , A61K6/0005 , A61K6/0023 , A61K6/0058 , C08L33/10 , C08L33/08
Abstract: The present invention discloses a kit of material for dentin restoration including a combination of a plurality of kinds of curable pastes each having a different hue, wherein each of the curable pastes exhibits L* of 55 to 75 and a fluctuation range of L* of 3 or less in a CIELab color system when the color of a cured body with a thickness of 3.0 mm obtained by curing the pastes is measured against a black background, and a method for producing the kit of material for dentin restoration.
Abstract translation: 本发明公开了一种用于牙质修复的试剂盒，其包括具有不同色调的多种可固化糊剂的组合，其中每种可固化糊剂的L *为55至75，L *的波动范围为3 以及黑色背景下测定厚度为3.0mm的固化体的固化体的颜色，并且生成用于牙本质修复的材料用试剂盒的方法的CIELab色系中。
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公开(公告)号：US20140017638A1
公开(公告)日：2014-01-16
申请号：US14027936
申请日：2013-09-16
Applicant: TOKUYAMA DENTAL CORPORATION
Inventor： Hironobu AKIZUMI , Chika TORIYABE
CPC classification number: A61C5/04 , A61C5/50 , A61K6/0002 , A61K6/0005 , A61K6/0023 , A61K6/0058 , C08L33/10 , C08L33/08
Abstract: The present invention discloses a kit of material for dentin restoration including a combination of a plurality of kinds of curable pastes each having a different hue, wherein each of the curable pastes exhibits L* of 55 to 75 and a fluctuation range of L* of 3 or less in a CIELab color system when the color of a cured body with a thickness of 3.0 mm obtained by curing the pastes is measured against a black background, and a method for producing the kit of material for dentin restoration.
Abstract translation: 本发明公开了一种用于牙质修复的试剂盒，其包括具有不同色调的多种可固化糊剂的组合，其中每种可固化糊剂的L *为55至75，L *的波动范围为3 以及黑色背景下测定厚度为3.0mm的固化体的固化体的颜色，并且测定牙本质修复用材料的制造方法的CIELab色系。
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