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:
Apr. 19, 1988
Filed:
Sep. 09, 1986
Marc Reynaud, 38240 Meylan, FR;
Other;
Abstract
In an assembly constituted by a drill and a tenon for anchoring a dental prosthesis adapted to be fixed in the root of a tooth the drill has a diameter slightly larger than that of the tenon at all points along its length. The tenon and the drill have similar meridian profiles and each is constituted by two coaxial cylindro-conical parts of large and small diameters respectively, the cylindro-conical part of small diameter comprising a cylindrical part connected to the small base of the conical frustum of the cylindro-conical part of large diameter projecting out of the root of the tooth. The tenon and the drill terminate respectively in their truncated end part of small diameter, of which the angle of taper is selected so as to ensure a wedging of the truncated end part of small diameter of the tenon in the corresponding truncated end part of the drilled hole. Futher the truncated end part of the tenon as a length shorter than that of the drill.