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88 条记录 (耗时 0.041 秒)

    Endodontic Instrument With Enlarged Chip Space And Reduced Torque Strength
    71.
    发明公开
    Endodontic Instrument With Enlarged Chip Space And Reduced Torque Strength 审中-公开

    公开(公告)号：US20230293262A1

    公开(公告)日：2023-09-21

    申请号：US18301723

    申请日：2023-04-17

    申请人： William B. Johnson

    发明人： William B. Johnson

    IPC分类号： A61C5/42

    CPC分类号： A61C5/42

    摘要： An endodontic instrument of this disclosure has less torque strength but greater flexibility and enlarged chip space compared to the prior art. In embodiments. only two flutes are spiraled about the instrument's length L to form two non-landed cutting edges between D2 and D16, the cutting edges merging to form a land at about D1. The tip end is rounded. The helical angle α increases from the handle end toward the tip end, a number of spirals per unit length being at least two times greater toward the tip end than toward the handle end, a cross-section of the length L consisting of two convex portions intersecting at each cutting edge or a wave-shape having one concave portion and one convex portion intersecting at each cutting edge, the cross-section occupying less total area than would a same size endodontic instrument having a triangular cross-section and providing greater chip space.

    Multi-planar pre-curved rotary endodontic file
    72.
    发明授权
    Multi-planar pre-curved rotary endodontic file 有权

    公开(公告)号：US10136962B2

    公开(公告)日：2018-11-27

    申请号：US14790813

    申请日：2015-07-02

    申请人： William B. Johnson

    发明人： William B. Johnson

    IPC分类号： A61C5/42 ,  A61C5/02

    摘要： An improved rotary endodontic file includes a multi-planar pre-curved apical portion having a first and a second curvature. The pre-curved apical portion begins at about one-third to one-quarter of the working length as measured from the tip end of the endodontic instrument. The first and second curvature permit the file to continually search and engage the walls of a tooth root canal in a forced inside-forced outside manner. As the file works its way down, it breaks free of any ledges encountered, probes lateral- and delta-type openings, and does not allow the file to stray from the curvature of the canal.

    Multi-planar pre-curved rotary endodontic file
    73.
    发明授权
    Multi-planar pre-curved rotary endodontic file 有权
    多平面预弯曲旋转牙髓文件

    公开(公告)号：US09078722B2

    公开(公告)日：2015-07-14

    申请号：US13354699

    申请日：2012-01-20

    申请人： William B. Johnson

    发明人： William B. Johnson

    IPC分类号： A61C5/02

    CPC分类号： A61C5/023 ,  A61C5/42

    摘要： An improved rotary endodontic file includes a multi-planar pre-curved apical portion having a first and a second curvature. The pre-curved apical portion begins at about one-third to one-quarter of the working length as measured from the tip end of the endodontic instrument. The first and second curvature permit the file to continually search and engage the walls of a tooth root canal in a forced inside-forced outside manner. As the file works its way down, it breaks free of any ledges encountered, probes lateral- and delta-type openings, and does not allow the file to stray from the curvature of the canal.

    摘要翻译： 一种改进的旋转牙根管文件包括具有第一和第二曲率的多平面预弯曲顶端部分。 预弯曲顶端部分从根牙髓器的尖端测量的工作长度的大约三分之一到四分之一开始。 第一和第二曲率允许文件以强制的内部强制外部方式不断地搜索和啮合牙根管的壁。 随着文件的下降，它不会发生任何碰撞的边缘，探测横向和三角形的开口，并且不允许文件偏离运河曲率。

    Longitudinally ground file having increased resistance to torsional and cyclic fatigue failure
    75.
    发明授权
    Longitudinally ground file having increased resistance to torsional and cyclic fatigue failure 有权
    纵向地面文件具有增加的抵抗扭转和循环疲劳失效的能力

    公开(公告)号：US08413330B2

    公开(公告)日：2013-04-09

    申请号：US12047369

    申请日：2008-03-13

    申请人： William B. Johnson

    发明人： William B. Johnson

    IPC分类号： B23P13/00

    CPC分类号： A61C5/023 ,  A61C5/42 ,  B24B1/00 ,  B24B19/022 ,  Y10T29/49 ,  Y10T29/49567 ,  Y10T29/49568

    摘要： A method of producing an endodontic file that involves grinding in a plane substantially parallel to the longitudinal axis of a rotating dental instrument blank. By grinding the dental instrument blank in this manner, the torsional strength of the resulting endodontic file is not eroded during its production, thereby providing a file that is less susceptible to breakage during its use.

    摘要翻译： 一种生产牙髓锉的方法，其涉及在基本上平行于旋转牙科仪器坯件的纵向轴线的平面内研磨。 通过以这种方式研磨牙科仪器坯料，所得到的根管锉的扭转强度在其生产期间不被侵蚀，从而提供在其使用期间不易破裂的文件。

    Longitudinally Ground File Having Increased Resistance to Torsional and Cyclic Fatigue Failure
    77.
    发明申请
    Longitudinally Ground File Having Increased Resistance to Torsional and Cyclic Fatigue Failure 有权
    具有增加抗扭转和循环疲劳失效的纵向地面文件

    公开(公告)号：US20090229129A1

    公开(公告)日：2009-09-17

    申请号：US12047369

    申请日：2008-03-13

    申请人： William B. Johnson

    发明人： William B. Johnson

    IPC分类号： B23P13/00 ,  A61C3/00

    CPC分类号： A61C5/023 ,  A61C5/42 ,  B24B1/00 ,  B24B19/022 ,  Y10T29/49 ,  Y10T29/49567 ,  Y10T29/49568

    摘要： A method of producing an endodontic file that involves grinding in a plane substantially parallel to the longitudinal axis of a rotating dental instrument blank. By grinding the dental instrument blank in this manner, the torsional strength of the resulting endodontic file is not eroded during its production, thereby providing a file that is less susceptible to breakage during its use.

    摘要翻译： 一种生产牙髓锉的方法，其涉及在基本上平行于旋转牙科仪器坯件的纵向轴线的平面内研磨。 通过以这种方式研磨牙科仪器坯料，所得到的根管锉的扭转强度在其生产期间不被侵蚀，从而提供在其使用期间不易破裂的文件。

    Method of endodontic preparation of a root canal and a file set for use in the method
    80.
    发明授权
    Method of endodontic preparation of a root canal and a file set for use in the method 失效
    根管的根管制备方法和用于该方法的文件组

    公开(公告)号：US6106296A

    公开(公告)日：2000-08-22

    申请号：US896381

    申请日：1997-07-18

    申请人： William B. Johnson

    发明人： William B. Johnson

    IPC分类号： A61C5/02 ,  A01C5/02

    CPC分类号： A61C5/023

    摘要： A method of cleaning and shaping a root canal in a tooth in preparation for filling the root canal with a filler material, such as gutta percha, as a part of an endodontic procedure includes the step of inserting into the root canal a tapered file having a spiraled scraping edge formed thereon, the scraping edge having a neutral rake angle, the file having a taper of about 0.04% such that, as a sequence of files of the same characteristics but having different tip diameters are employed, the root canal is shaped and cleaned from the coronal area towards the tooth apex in contrast to the traditional endodontic procedure wherein root canals have been shaped and cleaned in the step back method beginning with the root canal apex and progressing towards the coronal area.

    摘要翻译： 作为牙根治疗程序的一部分，用牙齿清洁和成形牙根管的方法是用填充材料（例如牙龈等）填充根管，其中包括将根管插入具有 螺旋刮削刃形成在其上，刮削刃具有中立的前角，该档具有约0.04％的锥度，使得作为具有相同特征但具有不同尖端直径的文件序列，根管成形， 与传统的根管手术相比，从冠状面朝向牙齿顶端清洁，其中根管已经以从根管顶端开始并朝着冠状区域前进的后退方法被成形和清洁。