Self adjusting endodontic instrument

A - Human Necessities – 61 – C

Patent

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A61C 5/02 (2006.01)

Patent

CA 2540130

The invention is an instrument for cleaning and/or shaping and/or widening a channel that exists in or through a solid object. The design of the instrument the superelastic and shape memory properties of the material from which it is made, allow the inner volume enclosed by the instrument, its outer contour, or both to change as a result of the forces exerted upon it while working, thereby shaping the instrument to the three-dimensional contour of the channel. A preferred embodiment of the instrument is an endodontic file for use in the cleaning, shaping, and widening stages of a root canal procedure.

Cette invention concerne un instrument servant à nettoyer et/ou à mettre en forme et/ou à élargir un canal se trouvant à l'intérieur d'un objet solide ou traversant ledit objet. La conception de cet instrument de même que les propriétés de superélasticité et de mémoire de forme du matériau qui le compose permettent au volume intérieur contenu dans l'instrument et/ou à son contour extérieur de varier sous l'effet de forces appliquées sur l'instrument pendant son utilisation, ce qui a pour effet d'adapter la forme de l'instrument à celle du contour tridimensionnel du canal. Un mode de réalisation préféré de cet instrument est une lime endodontique utilisée dans les étapes de nettoyage, de mise en forme et d'élargissement d'un traitement radiculaire.

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