Swaggering Endodontic Instruments

a technology of endodontic instruments and endoscopy, which is applied in the field of endodontic instruments, can solve the problems of increasing the cost of endodontic or root canal treatment, increasing the cost of endodontic treatment, so as to achieve the effect of flexible body, flexible body and sufficient flexibility

Inactive Publication Date: 2015-03-12
SCIANAMBLO MICHAEL J
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The root canal system of a human tooth is often narrow, curved and calcified, and can be extremely difficult to negotiate or clean.
Indeed, the conventional endodontic or root canal instruments currently available are frequently inadequate in the complete removal of the pulp and the efficient enlargement of the ECS.
Furthermore, they are usually predisposed to breakage, causing further destruction to the tooth.
Broken instruments are usually difficult, if not impossible to remove, often necessitating the removal of the tooth.
Injury to the tooth, which occurs as the result of a frank perforation or alteration of the natural anatomy of the ECS, can also lead to failure of the root canal and tooth loss.

Method used

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Examples

Experimental program
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Embodiment Construction

Reversed Helix

[0058]Conventional endodontic instruments have right-handed cutting edges and right handed helices. A flute that forms a right handed helix spirals around the shaft, in a shank to tip longitudinal direction and, furthermore, in a clockwise direction of rotation (as viewed from shank to tip). This configuration is similar to the treads of a screw. Conventional endodontic instruments having this screw like configuration are prone to binding. Furthermore, the radial lands and negative cutting angles typical of convention endodontic instruments predisposed the instruments to premature fatigue and breakage.

[0059]An endodontic instrument in accordance with the invention can include a reversed helix. A reversed helix spirals around the shaft of an instrument, in an shank to tip longitudinal direction and, furthermore, in a direction of rotation opposite to the cut direction of rotation. If, for example, the endodontic instrument has a clockwise cut direction of rotation, its ...

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PUM

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Abstract

Endodontic instruments are described which have at least a section with a center of mass offset from an axis of rotation so that when the instrument is rotated, the section bends away from the axis of rotation.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of U.S. application Ser. No. 13 / 804,084, filed Mar. 14, 2013, which claims priority to and is a continuation of U.S. application Ser. No. 11 / 402,207, filed Apr. 10, 2006, which claims priority to U.S. Provisional Application Ser. No. 60 / 669,409, filed Apr. 8, 2005. The disclosure of the prior applications is considered part of and is incorporated by reference in the disclosure of this application.BACKGROUND[0002]The present invention relates to endodontic instruments.[0003]Endodontic instruments can be used for cleaning and enlarging the endodontic cavity space (“ECS”), also known as the root canal system of a human tooth. FIG. 1A shows an example of an unprepared root canal 102 of a tooth 104. As can be seen, the unprepared root canal 102 is usually a narrow channel that runs through the central portion of the root of the tooth. Cleaning and enlargement of the ECS can be necessitated by the death or nec...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61C5/02A61C3/02
CPCA61C3/02A61C5/023A61C5/42
Inventor SCIANAMBLO, MICHAEL J.
Owner SCIANAMBLO MICHAEL J
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