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:
May. 16, 2000
Filed:
Oct. 29, 1998
Fuminobu Kubo, Katano, JP;
Kazuhiko Joshin, Yokosuka, JP;
GC Corporation, Tokyo, JP;
Abstract
A method for using dental acrylic resins, the method comprising mixing a liquid monomer of methyl methacrylate with a polymer powder of methyl methacrylate, forming the mixture into an arbitrary shape by molding, filling, applying or other means, and then polymerizing and curing the formed mixture, wherein organic compounds selected from acryloyl morpholine, a coumarone resin, vinyl stearate, polyvinyl acetate, and alcoholic surfactants are previously added to the liquid monomer as a shrinkage controlling agent for lowering a curing shrinkage caused by the polymerization, is disclosed. According to the invention, not only the curing shrinkage rate of the curing shrinkage generated at the time of polymerization can be readily lowered to 0.3% or less, but also the method of the invention can be applied to a denture, a denture base, a casting pattern, fillers or cements as in the conventional techniques.