Endodontic instrument of predetermined flexibility

A - Human Necessities – 61 – C

Patent

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A61C 3/02 (2006.01) A61C 5/02 (2006.01)

Patent

CA 2173578

An endodontic instrument for use in root canal therapy which comprises an inner core of a metal having a specific flexibility, and at least one outer shell of a metal having a different flexibility. By selecting the ratio of the two metals, the instrument may be designed to have a predetermined desired flexibility which is sufficient to assure proper operation of the instrument, yet not so stiff as to risk damage to the tooth canal. A kit which is composed of several such instruments of increasing diameter is also disclosed, and with the instruments being designed to be used sequentially in root canal therapy, and wherein all of the instruments possess substantially the same degree of flexibility. The instruments can thus be used with predictable and consistent results.

L'invention concerne un instrument prévu pour être utilisé en endodontie. Cet instrument comprend une âme intérieure de métal présentant une flexibilité spécifique, et au moins une enveloppe extérieure de métal dont la flexibilité est différente. En sélectionnant le rapport des deux métaux, l'instrument peut être conçu pour présenter une flexibilité requise prédéterminée qui est suffisante pour assurer son fonctionnement correct, et une rigidité ne risquant pas d'endommager le canal de la dent. L'invention traite également d'un kit qui se compose de plusieurs instruments de ce type, présentant des diamètres supérieurs, et d'instruments prévus pour être utilisés, de manière séquentielle, en endodontie. Tous ces instruments présentent sensiblement le même degré de flexibilité. Les instruments peuvent ainsi être utilisés avec des résultats consistants et prévisibles.

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