Dentistry – Method or material for testing – treating – restoring – or... – Endodontic
Reexamination Certificate
2011-07-19
2011-07-19
Rodriguez, Cris L (Department: 3732)
Dentistry
Method or material for testing, treating, restoring, or...
Endodontic
Reexamination Certificate
active
07980853
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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Rodriguez Cris L
Singh Sunil K
Ultradent Products Inc.
Workman Nydegger
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