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. 26, 1996
Filed:
May. 16, 1994
Dentsply Research & Development Corp., Milford, DE (US);
Abstract
A dental prosthesis includes polymeric material formed by heat curing a polymerizable composition having at least 5 percent by weight of at least one polymerizable Monomer having at least one acrylic moiety and a gram molecular weight of at least 200. The polymeric material is preferably formed by heat curing and has an unnotched Izod impact strength of at least 2.5 and more preferably at least 3.0 ft.lb/in as measured by a Modified ASTM D256, and a flexural fatigue life of at least 20,000 flexes to failure at 0.1 inch deflection. Preferably the polymerizable monomer has a vapor pressure less than 5 mm Hg at 23.degree. C. A method of making a denture is provided which includes molding and polymerizing the polymerizable composition to form a denture. Preferably the polymerizable composition includes polymerizable compounds made up of at least 5 percent by weight of the acrylic Monomer having a gram molecular weight of at least 300 and less than 5 percent by weight of Volatile compounds and less than 2 percent by weight of Low Molecular Weight acrylic compounds having a gram molecular weight of less than 200.