Title:
歯科切削加工用ブランク及びその製造方法
Document Type and Number:
Japanese Patent JP7440932
Kind Code:
B2
Abstract:
Provided are a blank for dental cutting having a part to be cut made from a resin material, wherein the resin material includes a composite material in which inorganic particles are dispersed in a resin matrix, the inorganic particles are made from aggregates of inorganic spherical particles having a specific average primary particle diameter, have a narrow particle size distribution, and include one or a plurality of spherical particle groups of the same particle diameter (G-PID) having a refractive index smaller than that of the resin matrix and an ultrafine particle group (G-SFP), and the arrangement structure of all of the inorganic spherical particles constituting the spherical particle groups of the same particle diameter in the resin matrix has a short-range ordered structure that fulfills specific conditions, and a method for producing the same.
Inventors:
Takuma Matsuo
Anna Anzu
Tomoyasu Nagasawa
Hironobu Akizumi
Anna Anzu
Tomoyasu Nagasawa
Hironobu Akizumi
Application Number:
JP2021520732A
Publication Date:
February 29, 2024
Filing Date:
May 13, 2020
Export Citation:
Assignee:
Tokuyama Dental Co., Ltd.
International Classes:
A61K6/884; A61C5/77; A61C13/087; A61K6/16; A61K6/17; A61K6/831; A61K6/84
Domestic Patent References:
| JP2012153640A | ||||
| JP9255516A |
Foreign References:
| WO2018194031A1 | ||||
| WO2018194032A1 | ||||
| WO2017069274A1 | ||||
| WO2012042911A1 | ||||
| WO2020050123A1 | ||||
| WO2019189698A1 |
Attorney, Agent or Firm:
Ryuta Kato
Hiroki Kishitake
Noritsugu Chuma
Hiroki Kishitake
Noritsugu Chuma