The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 16, 2010
Filed:
Sep. 20, 2007
Futoshi Fusejima, Itabashi-ku, JP;
Naoko Jimbo, Itabashi-ku, JP;
Shinji Kaga, Itabashi-ku, JP;
GC Corporation, Tokyo, JP;
Abstract
To provide a dental restorative material composition using an organic-inorganic composite filler having excellent surface smoothness like a natural tooth, low polymerization shrinkage, excellent X-ray contrast imaging property, similar transparency to that of a natural tooth, and no variation of transparency before and after the composition is hardened, the dental restorative material composition includes (a) a (meth)acrylate monomer, (b) an organic-inorganic composite filler having an average particle diameter of 5 to 50 μm which is made by mixing a (meth)acrylate monomer and a fine particle filler having an average primary particle diameter of 0.005 to 0.3 μm and having X-ray impermeability, (c) a fine particle filler having an average primary particle diameter of 0.005 to 0.04 μm, and (d) a photopolymerization initiator.