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:
Sep. 03, 2002
Filed:
May. 30, 2001
James A. Davidson, Germantown, TN (US);
Other;
Abstract
A break-resistant composite comprising a plurality of fibers at least partially embedded in a polymer matrix forms a composite for making at least a portion of an endodonic instrument. At least a portion of the fibers are selected from a group consisting of partially twisted fibers and off-axis oriented fibers. The composite instrument can contain abrasive particulates to improve cutting and wear resistance for use in root canal procedures. The twisted fiber composite material allows for applied torque load response, improved flexibility within the root canal, and reduces or eliminates gross breakage of the instrument during use. The inventive composite can be molded or machined to make an endodnic instrument having certain desired diameters, tapers, helical recesses, and other design features.