Endodontic instrument having notched cutting surfaces

Details Endodontic instrument having notched cutting surfaces Endodontic instrument having notched cutting surfaces

2005-11-22

2005-11-22

O'Connor, Cary E. (Department: 3732)

Dentistry

Apparatus

Broach

Reexamination Certificate

active

06966774

ABSTRACT:
A fluteless endodontic file is provided, formed from a tapered shaft of material having a prismatic shape generally defined by three or more side surfaces and three or more interposed corners. A plurality of notches are cut into one or more corners defining cutting surfaces, points and/or edges. The notched cutting surfaces are formed such that the file, when rotated and/or reciprocated within a root canal, effectively cuts/debrides hard tissue (known in the art as dentin) as well as soft tissue, thus, forming an optimal canal shape. The cutting surfaces are also preferably formed at an angle to the centerline of the instrument to provide optimal cutting efficiency and material removal. The fluteless file design exhibits increased efficacy, with less tendency to bind and break within the root canal and also significantly reduces manufacturing and capital equipment costs.

REFERENCES:
patent: 251598 (1881-12-01), Johanson
patent: 1402229 (1922-01-01), Hauptmeyer
patent: 5035617 (1991-07-01), McSpadden
patent: 5104316 (1992-04-01), McSpadden
patent: 5106298 (1992-04-01), Heath et al.
patent: 5236357 (1993-08-01), Randin
patent: 5380200 (1995-01-01), Heath et al.
patent: 5429504 (1995-07-01), Peltier et al.
patent: 5464362 (1995-11-01), Heath et al.
patent: 5569035 (1996-10-01), Balfour et al.
patent: 5746597 (1998-05-01), Maillefer et al.
patent: 5842862 (1998-12-01), Nissan
patent: 6149501 (2000-11-01), Farzin-Nia et al.
patent: 6238491 (2001-05-01), Davidson et al.
patent: 6267592 (2001-07-01), Mays
patent: 6315558 (2001-11-01), Farzin-Nia et al.
patent: 6419488 (2002-07-01), McSpadden et al.
patent: 6428317 (2002-08-01), Abel
patent: 6431863 (2002-08-01), Sachdeva et al.
patent: 2002/0006599 (2002-01-01), Davidson
patent: 2002/0045147 (2002-04-01), Farzin-Nia et al.
patent: 2003/0013087 (2003-01-01), Bleiweiss et al.
patent: 0120542 (1984-10-01), None

Affiliated with

Also associated with

Rating

Endodontic instrument having notched cutting surfaces does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Endodontic instrument having notched cutting surfaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Endodontic instrument having notched cutting surfaces will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3504261