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. 04, 1999
Filed:
Feb. 20, 1998
John Summer, Portland, OR (US);
Other;
Abstract
A loop of cord, projecting out from one end of an elongate sleeve is placed around the base of a tooth and closed. In one preferred form, the cord includes elastic material so that, as the loop is closed around the tooth, the contractile force exerted by the stretched elastic cord around the circumference of the tooth at a part of the tooth which tapers toward the root tends to seat the cord apically (toward the apex of the root). The self-seating tendency of this loop of elastic cord as it is tightened around the base of a tooth more effectively separates the gingival tissues from the base of the tooth. As a result, good clean dry access to the margins of a crown or inlay is provided. In one form, the sleeve is of a heat shrinkable material and is heat shrunk to frictionally engage the cord.