Methods for apical preparation using endodontic instruments made of super-elastic alloys
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United States of America Patent
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Jul 19, 2011
Grant Date -
Jan 11, 2007
app pub date -
Jul 6, 2005
filing date -
Jul 6, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The apical third of a root canal is cleaned and/or shaped during a root canal procedure with an endodontic file made from a titanium-based alloy either by reciprocating manual use or by using a reciprocating powered hand piece. The titanium-based endodontic file has super-elastic properties that allow it to be very flexible and strong. The endodontic file is rotated in the apex of a root canal in degrees of rotation less than 120 degrees. By restricting the degree of rotation, excessive cutting by the endodontic file is kept to a minimum. The use of elastic alloys of titanium help prevent ledging or other damage to the root canal wall that may be caused using rigid apical files made of stainless steel.
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