公开(公告)号：US20210188634A1

公开(公告)日：2021-06-24

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：US11013668B2

公开(公告)日：2021-05-25

申请号：US16317112

申请日：2017-08-09

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Hiroto Kishi ,  Kazuhiko Okishio ,  Kyouko Takita

IPC: A61K6/887 ,  A61K6/30 ,  A61K6/00 ,  A61K6/62 ,  A61K6/896 ,  C08F222/10 ,  C08F228/06 ,  C08F230/02

Abstract: A two-package dental adhesive composition is provided that has an excellent adhesive property for each of various dental materials and also has excellent storage stability. The two-package dental adhesive composition includes a first agent and a second agent which are divided from each other. The two-package dental adhesive composition includes at least five components including: (A) an acidic group-containing polymerizable monomer; (B) a sulfur atom-containing polymerizable monomer; (C) a silane coupling agent; (D) a borate compound; and (E) water. The first agent contains only (A) the acidic group-containing polymerizable monomer and (B) the sulfur atom-containing polymerizable monomer out of the five components. The second agent contains only (C) the silane coupling agent, (D) the borate compound, and (E) the water out of the five components.

公开(公告)号：US11001713B2

公开(公告)日：2021-05-11

申请号：US15991687

申请日：2018-05-29

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Tatsuya Yamazaki ,  Hironobu Akizumi

IPC: C09C3/10 ,  C09C1/30 ,  C09C1/36 ,  B82Y30/00 ,  A61K6/71 ,  A61K6/836 ,  A61K6/887 ,  C08L33/06

Abstract: Disclosed is an organic/inorganic composite filler that contains: inorganic agglomerated particles comprising agglomerations of inorganic primary particles having a mean diameter between 10 and 1000 nm; an organic resin phase that covers the surface of each inorganic primary particle and binds the inorganic primary particles to each other; and intra-agglomerate voids, formed between the organic resin phase covering the surface of each inorganic primary particle, with a pore volume (here, “pore” refers to holes with diameters between 1 and 500 nm) between 0.01 and 0.30 cm3/g as measured by mercury intrusion porosimetry. Also disclosed is a method for manufacturing the above organic/inorganic composite filler.

公开(公告)号：US10813850B2

公开(公告)日：2020-10-27

申请号：US16335069

申请日：2017-10-12

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Junichiro Yamagawa ,  Tomonao Shimizu ,  Yuko Nagasawa ,  Anna Uehara

IPC: A61K6/891 ,  A61K6/84 ,  A61K6/831

Abstract: A dental resin composite material is provided that is reduced in darkness of its color tone, and also reduced in burning and color unevenness. Specifically provided are a dental resin composite material including 100 parts by mass of a polyaryletherketone resin, 10 parts by mass to 300 parts by mass of inorganic particles, and 90 ppm or less of an impurity having an aromatic ring, a method of producing the dental resin composite material, and a polyaryletherketone resin for producing a dental resin composite material, to be used for producing the dental resin composite material.

公开(公告)号：US20200253835A1

公开(公告)日：2020-08-13

申请号：US16647045

申请日：2018-09-14

Applicant: Tokuyama Dental Corporation

Inventor： Junichiro YAMAGAWA ,  Akiyoshi MORI ,  Yuko NAGASAWA ,  Takuya SUZUKI ,  Yohei SEYA

IPC: A61K6/887 ,  A61K6/84 ,  A61K6/833 ,  A61K6/836

Abstract: A dental curable composition which comprises a radically polymerizable monomer component (A), a polymerizing catalyst (B) and an inorganic granular material (C), characterized in that: the radically polymerizable monomer component (A) contains a bifunctional monomer (A-1) represented by the following formula (α), RP—SP1—RP   (α) where, RP is a radically polymerizable group represented by CH2═C(R)—COO— or CH2═C(R)—CONH—, wherein R is a hydrogen atom or a hydrocarbon group having 1 to 3 carbon atoms, and SP1 is a hydrocarbon group having 5 to 15 carbon atoms, and the content of the bifunctional monomer (A-1) in the radically polymerizable monomer component (A) is 5 to 40% by mass under a condition that the content of a diluting monomer (A-2) represented by the following formula (β), RP—SP2—RP   (β) where, RP is as defined in the above formula (α), and SP2 is an aliphatic hydrocarbon group different from. SP1, an oxygen-containing aliphatic hydrocarbon group having not less than 2 oxygen atoms, or an oxygen-containing aromatic hydrocarbon group having not less than 3 oxygen atoms, is zero or not more than 10% by mass.

公开(公告)号：US10653586B2

公开(公告)日：2020-05-19

申请号：US15760535

申请日：2016-10-27

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Junichiro Yamagawa ,  Tatsuya Yamazaki ,  Takuma Matsuo ,  Takuya Suzuki

IPC: A61K6/08 ,  A61K6/76 ,  C09C1/28 ,  C09C3/10 ,  A61K6/62 ,  A61K6/884 ,  A61K6/887

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：US20180303721A1

公开(公告)日：2018-10-25

申请号：US15769234

申请日：2016-10-21

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Hironobu Akizumi ,  Chika Toriyabe

IPC: A61K6/00 ,  A61K6/083 ,  A61K6/06 ,  C08L33/08

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.

公开(公告)号：US20170007378A1

公开(公告)日：2017-01-12

申请号：US15107288

申请日：2015-01-06

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Ayumu GYAKUSHI ,  Kouji MATSUSHIGE

IPC: A61C13/07 ,  A61K6/00

CPC classification number: A61C13/0025 ,  A61K6/0026

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.

Abstract translation: 牙板衬垫包括：含有（A）（甲基）丙烯酸类聚合物和含氟（甲基）丙烯酸系聚合性单体的糊剂（i），其中（A）（甲基）丙烯酸系聚合物 基聚合物的溶解度小于20质量％; 和含有（甲基）丙烯酸系聚合物的溶解度为20质量％以上的（甲基）丙烯酸类聚合性单体的（甲基）丙烯酸系聚合性单体的糊剂（ii）和填充剂，其中， 从膏（i）和糊剂（ii）组成的组中选择的糊剂含有聚合引发剂，其中通过使用之前将糊状物（i）和糊状物（ii）混合使用牙板衬垫。

公开(公告)号：US20140364533A1

公开(公告)日：2014-12-11

申请号：US14364121

申请日：2012-12-11

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Jun-ichiro Yamagawa

IPC: A61K6/087

CPC classification number: A61K6/087 ,  A61L27/446 ,  A61L2430/02 ,  C08J3/20 ,  C08J2300/12 ,  C08K9/06 ,  C08L71/00 ,  A61K6/0023 ,  C08L33/04 ,  C08L101/12

Abstract: Provided are: a resin composite, which is produced using: 100 parts by mass of a resin having a melting point or fluidization temperature of from 200 to 500° C.; and 40 to 400 parts by mass of inorganic particles surface-treated with a treatment-agent having a reactive double bond group or an aromatic group at an end thereof, the resin composite having an rate of 55% or more a manufacturing method for the resin composite; and a dental material using the resin composite: And the rate (%) represents 100×{EP/(EP+V)}; EP represents the number of the inorganic particles per square region measuring 10 μm on each side exposed in a polished surface of the resin composite; and V represents the number of voids per square region measuring 10 μm on each side formed through elimination of the inorganic particles in the square region where the EP is counted.

Abstract translation: 提供：使用100质量份熔点或流化温度为200〜500℃的树脂制造的树脂复合体。 和40〜400质量份用其末端具有反应性双键基团或芳香族基团的处理剂表面处理的无机粒子，树脂复合体的比例为55％以上，树脂的制造方法 综合; 和使用树脂复合材料的牙科材料：速率（％）表示100×{EP /（EP + V）}}。 EP表示在树脂复合材料的抛光表面中暴露的每一侧的每平面区域的无机颗粒数为10μm; V表示通过消除在计数EP的正方形区域中的无机颗粒形成的每一侧上每10μm方形区域的空隙数。

公开(公告)号：US20250152316A1

公开(公告)日：2025-05-15

申请号：US18838840

申请日：2023-03-13

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Yuko NAGASAWA ,  Shuntaro IIDA

IPC: A61C13/00 ,  A61C3/02

Abstract: A mill blank for dental cutting including a section to be cut that has a shape of a columnar body whose bottom surface and upper surface are in a substantially identical shape and that is formed of a hybrid resin, the section to be cut having a gradation structure in which color appearance changes in stages in a height direction, where the height direction is a direction from the bottom surface of the columnar body being a base end toward the upper surface which is a tip. In the gradation structure, a region having one color appearance forms each of “color units” into which the columnar body is divided in the height direction along a plane horizontal to the bottom surface and that each have a predetermined thickness, and five to nine “color units” different in the color appearance are continuously arranged in the height direction.