Title:
X-RAY OPAQUE FILLER MATERIAL, X-RAY OPAQUE DENTAL FILLER MATERIAL, METHOD FOR PRODUCING X-RAY OPAQUE FILLER MATERIAL, AND CURABLE DENTAL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2023/042598
Kind Code:
A1
Abstract:
Provided are: an X-ray opaque filler material that can impart a required X-ray opacity to a curable dental composition, that resists causing a decline in the transparency of the cured product, and that enables an aesthetic restoration; a method for producing this X-ray opaque filler material; and a curable dental composition that uses this X-ray opaque filler material. The X-ray opaque filler material, through its incorporation in a curable composition that contains polymerizable monomer, imparts X-ray opacity to the curable composition and cured products therefrom. The X-ray opaque filler material contains crystalline rare earth metal fluoride particles as the main component and contains either powder selected from the group consisting of a first powder and a second powder, wherein the first powder exhibits at least 0.3° for the full width at half maximum of the highest intensity peak originating with the crystalline rare earth metal fluoride particles in the X-ray diffraction pattern, and the second powder is the first powder that has been subjected to a surface treatment. A method for producing this X-ray opaque filler material is provided. The curable dental composition uses this X-ray opaque filler material.
Inventors:
KIRA RYUTA (JP)
MIYAKE HIDEAKI (JP)
AKIZUMI HIRONOBU (JP)
MIYAKE HIDEAKI (JP)
AKIZUMI HIRONOBU (JP)
Application Number:
PCT/JP2022/031237
Publication Date:
March 23, 2023
Filing Date:
August 18, 2022
Export Citation:
Assignee:
TOKUYAMA DENTAL CORP (JP)
International Classes:
A61K6/84; A61K6/16; A61K6/25
Foreign References:
| JPH0317803B2 | 1991-03-11 | |||
| JP2008266767A | 2008-11-06 | |||
| JPS5651407A | 1981-05-09 | |||
| JP2021080196A | 2021-05-27 |
Other References:
HASEBE, RUI; TERUO NAMBA: "Development of fluoride fillers for dental material applications", SERAMIKKUSU = CERAMICS JAPAN : BULLETIN OF THE CERAMIC SOCIETY OF JAPAN, NIPPON SERAMIKKUSU KYOKAI, TOKYO, JP, vol. 54, no. 9, 1 January 2019 (2019-01-01), JP , pages 646 - 649, XP009544536, ISSN: 0009-031X
Attorney, Agent or Firm:
IAT WORLD PATENT LAW FIRM (JP)
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