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Methods for manufacturing endodontic instruments

A technology of endodontics and instruments, which is applied in the field of cold forming technology for manufacturing endodontic files, which can solve the problems of damaged root canals and difficult removal of files, and achieve the effects of avoiding fracture, improving material performance, and low cost

Inactive Publication Date: 2008-02-13
ULTRADENT PROD INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A file that breaks in the root canal is difficult to remove and can damage the root canal as a result

Method used

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  • Methods for manufacturing endodontic instruments
  • Methods for manufacturing endodontic instruments
  • Methods for manufacturing endodontic instruments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] A detailed description of the endodontic instrument and method of manufacture of the present invention will now be provided with specific reference to the accompanying drawings showing preferred embodiments of the invention. It should be understood that like structures will be given like reference numerals. In order to give context to the scope of the present invention, certain terms used throughout the application will now be defined.

[0032] As used herein, the term "instrument" refers to endodontic files and other instruments used in root canal or other endodontic procedures.

[0033] As used herein, the terms "polygon" and "polygonal" refer to a shape enclosed and bounded by straight or curved sides. Non-limiting examples include triangles, squares, rectangles, pentagons, spherical triangles, or any other various regular or irregular shapes.

[0034] As used herein, the terms "chemical milling," "stripping," and "milling" refer to the process by which a material ...

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PUM

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Abstract

Endodontic instruments having a desired cutting edge are formed, at least in part, using a cold forming process. The method of forming the endodontic instrument (32) includes providing a blank metal thread or wire and a roll forming apparatus (30) that include dies (34a, 34b) having a negative impression of a cutting edge. The dies (34a, 34b) are pressed against the blank (32) with sufficient force in order for the dies (34a, 34b) to at least partially form the cutting edge in the blank (32). Any desired shape can be formed into the blank (32) by selecting a die with the proper corresponding negative impression. Cold forming techniques suitable for forming endodontic instruments include roll forming, flat rolling, radial forming, cold drawing, and similar techniques. The files can be sharpened or otherwise modified before or after cold-forming using techniques such as cutting, grinding, and chemical milling.

Description

technical field [0001] The present invention relates to the manufacture of endodontic instruments. More specifically, the present invention relates to a cold forming process for the manufacture of endodontic files. Background technique [0002] When the root canal of a natural tooth becomes infected or abscessed, discomfort, and in many cases, can result in severe pain. In the early days of dental medicine, the only solution was tooth extraction. More recently, however, dentists have discovered that it is possible to successfully remove infected pulp material that forms the nerve of the tooth, and after careful pretreatment of the root canal containing the nerve material, refill it with an inert filling material such as gutta-percha root canal, thereby preserving the patient's tooth. [0003] In order to achieve a successful root canal restoration, the dentist must carefully and as completely as possible remove the tooth's infected pulp material to prevent continued or fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C5/02A61C5/77
CPCB21J9/06A61C5/023B21F7/00B21H3/02B23H9/00B21H3/06C23F1/04B21C3/04A61C5/42Y10T29/49567Y10T29/49568Y10T409/300504Y10T409/307168
Inventor P·刘易斯J·尼尔森
Owner ULTRADENT PROD INC