公开(公告)号：US10993889B2

公开(公告)日：2021-05-04

申请号：US16463796

申请日：2017-11-28

Applicant: TOKUYAMA DENTAL CORPORATION

Inventor： Tomonao Shimizu ,  Junichiro Yamagawa ,  Yuko Nagasawa

IPC: A61K6/891 ,  A61C5/77 ,  A61C13/20 ,  A61C13/087 ,  C08L71/10 ,  A61K6/17 ,  A61K6/76 ,  A61K6/78 ,  C08L81/02

Abstract: A polyaryletherketone resin material is provided for dental use having high color tone stability in the case of exposure to visible light. The polyaryletherketone resin material for dental use includes a polyaryletherketone resin, which is a thermoplastic resin containing at least an aromatic group, an ether group (ether bond), and a ketone group (ketone bond) in its structural unit, and having a b* value of 10.0 or more in terms of colorimetric value of a 1.0 mm molded body in a CIELab color system under a black background condition.

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：USD966517S1

公开(公告)日：2022-10-11

申请号：US29699882

申请日：2019-07-30

Applicant: Tokuyama Dental Corporation

Designer： Yuko Nagasawa ,  Masaaki Ushioda

公开(公告)号：US11452675B2

公开(公告)日：2022-09-27

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 ,  A61K6/836 ,  A61K6/833 ,  A61K6/84 ,  C08F20/18 ,  C08F20/56

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.