A - Human Necessities – 61 – C
Patent
A - Human Necessities
61
C
A61C 3/00 (2006.01) A61C 3/02 (2006.01) A61C 5/02 (2006.01) A61C 5/04 (2006.01) A61C 1/00 (2006.01)
Patent
CA 2240172
An improved endodontic dental instrument is provided for extirpating and/or obturating a root canal. The instrument has two or more flutes defining tissue removing edges wherein the flutes are formed unequal in size, shape and/or spacing about the periphery of the instrument shaft so as to provide an instrument having a degree of asymmetry. Lands are provided adjacent the tissue removing edges and at least a portion of the lands are recessed from the periphery to reduce frictional loads on the instrument during extirpating and obturating procedures.
L'invention concerne un instrument endodontique perfectionné pour extirper le tissu d'un canal radiculaire et/ou obturer celui-ci. L'instrument a deux cannelures ou davantage formant des bords permettant d'extraire le tissu, ces cannelures étant de taille, de forme et/ou d'espacement différents, sur la périphérie de la mèche de l'instrument, de sorte qu'un instrument présentant un certain degré d'asymétrie soit produit. Des méplats sont prévus près des bords destinés à arracher le tissu et au moins une partie de ces méplats est en retrait par rapport à la périphérie de la mèche, ce qui réduit les forces de friction sur l'instrument, durant l'extirpation et l'obturation.
Gowling Lafleur Henderson Llp
Ormco Corporation
Tycom Dental Corporation
LandOfFree
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