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Patent Searching and Data


Title:
ENDODONTIC INSTRUMENTS
Document Type and Number:
WIPO Patent Application WO/2014/205411
Kind Code:
A3
Abstract:
A rotatable endodontic file for cleaning/shaping a tooth root canal, comprising: an elongated shaft having a proximal end portion, a distal end and a tapered working portion having a rotational axis, the working portion extending from said proximal portion to said distal end; the external surface of said shaft working portion having a plurality of at least two spirals, a parallelogram-shaped cross section that has an axis of rotation that is centered such that the cross section center of mass (centroid) is located at the axis of rotation where the acute angle of the parallelogram is different along the length of the file.

Inventors:
SHOTTON, Vincent (21333 104th Street, Broken Arrow, OK, 74014, US)
AMMON, Dan (8663 East 102nd Street, Tulsa, OK, 74133, US)
Application Number:
US2014/043515
Publication Date:
June 04, 2015
Filing Date:
June 20, 2014
Export Citation:
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Assignee:
DENTSPLY INTERNATIONAL INC. (570 West College Avenue, York, PA, 17401-3880, US)
SHOTTON, Vincent (21333 104th Street, Broken Arrow, OK, 74014, US)
AMMON, Dan (8663 East 102nd Street, Tulsa, OK, 74133, US)
International Classes:
A61C5/02
Domestic Patent References:
WO1999037235A21999-07-29
WO2000059399A12000-10-12
Foreign References:
US20060228668A12006-10-12
EP0019356A11980-11-26
US20060216668A12006-09-28
Attorney, Agent or Firm:
ZDURNE, David et al. (Dentsply International Inc, 570 West College AvenueYork, PA, 17401-3880, US)
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