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. 25, 1984
Filed:
Apr. 24, 1981
Applicant:
Inventor:
Michel Rigaud, 69350 La Mulatiere (Rhone), FR;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61C / ;
U.S. Cl.
CPC ...
433218 ;
Abstract
A groove is cut on the lateral surfaces of the tooth, at an equal distance from the gum to the sealed base of the tooth. A diaboloshaped drill is then used to shape the occlusal mass above the groove and the cervical mass below the groove. When shaping the cervical groove, a lower horizontal path is also defined which is used as a guide for the finishing drill. The rough spherical shape of the tooth is thus transformed into a roughly straight tapered trunk onto which the prosthetic crown is installed.