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Endodontic files and obturator devices and methods of manufacturing same

  • US 7,967,605 B2
  • Filed: 03/16/2005
  • Issued: 06/28/2011
  • Est. Priority Date: 03/16/2004
  • Status: Active Grant
First Claim
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1. An endodontic file comprising:

  • a tip;

    a shank; and

    a working length disposed between the tip and the shank, the working length having a helical cutting edge defining a rake angle, wherein the rake angle varies between the tip and the shank, and wherein the taper configuration of the file includes at least two different rates of taper, the taper configuration of the file arranged such that a rate of taper closer to the shank is smaller than a rate of taper closer to the tip, wherein the rake angle continuously increases along the working length from the tip to the shank.

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