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    • 48. 发明授权
    • Methods for manufacturing endodontic instruments
    • 制造牙髓器械的方法
    • US07665212B2
    • 2010-02-23
    • US11063354
    • 2005-02-23
    • Paul LewisJohn Nielsen
    • Paul LewisJohn Nielsen
    • A61C5/10
    • C23F1/04A61C5/42B21C3/04B21F7/00B21H3/02B21H3/06B21J9/06B23H9/00Y10T29/49567Y10T29/49568Y10T409/300504Y10T409/307168
    • 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 includes providing a blank metal thread or wire and at least one die that has a negative impression of a cutting edge. The die is pressed against the blank with sufficient force in order for the die to form an at least partially formed cutting edge in the blank. Any desired shape can be formed into the blank 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.
    • 至少部分地使用冷成型工艺形成具有所需切削刃的牙髓器具。 形成牙根管器械的方法包括提供空白金属线或线以及至少一个模具,其具有切削刃的消极印象。 模具以足够的力压在坯件上,以便模具在坯件中形成至少部分形成的切割边缘。 可以通过选择具有适当的相应负面印象的模具,将任何期望的形状形成为坯料。 适合于形成牙髓治疗仪器的冷成形技术包括辊压成型,平轧,径向成形,冷拔和类似技术。 使用诸如切割,研磨和化学研磨之类的技术,在冷成形之前或之后,可以对这些文件进行锐化或修改。