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. 06, 2014
Filed:
Oct. 06, 2011
Markus Borgschulte, Munich, DE;
Markus Borgschulte, Munich, DE;
DENTSPLY International Inc., York, PA (US);
Abstract
Disclosed herein is a system for the endodontic treatment of a root canal. The system includes an endodontic instrument; an endodontic handpiece having a drive motor for rotating the endodontic instrument releasably attached to the handpiece; and a control unit for controlling the rotation of the endodontic instrument according to one or more predetermined rotational sequences. The rotational sequences include reciprocating the endodontic instrument by continuously sequentially rotating the endodontic instrument in a first direction followed by reversing the direction of rotation so that 0.5×Ψ≦α<Ψ and 3≦α/β≦20, where α represents a rotational angle in a direction in which the rotating endodontic instrument removes debris from the root canal, β represents a rotational angle in the opposite direction, and Ψ represents the elastic angle of the endodontic instrument at which plastic deformation occurs in the direction of α.