Endodontic instruments
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United States of America Patent
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Feb 27, 2018
Issued Date -
N/A
app pub date -
Jun 20, 2014
filing date -
Jun 20, 2013
priority date (Note) -
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status (Latency Note)
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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 asymmetric such that the center of mass (centroid) is not along the file axis.
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Family
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