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    • 16. 发明公开
    • DENTAL TOOL DISPLACEMENT APPARATUS AND METHOD WITH SLOW ROTATIONAL MOTION
    • ZAHNWERKZEUG-VERSCHIEBUNGSVORRICHTUNG UND VERFAHRENFÜREINE LANGSAME DREHBEWEGUNG
    • EP2445440A2
    • 2012-05-02
    • EP10791714.8
    • 2010-06-10
    • Redent-Nova Ltd.
    • HOF, Refael
    • A61C1/00
    • A61C1/185A61C1/003A61C1/07A61C1/12A61C5/40
    • A dental tool displacement apparatus for use with a motorized power handle to displace a dental tool includes a tool holder having a receptacle for receiving the dental tool, and a drive arrangement. The drive arrangement defines a transmission from the motorized power handle to the tool holder such that the tool holder undergoes reciprocating motion parallel to the tool axis at a first frequency of oscillations per minute and rotates about the tool axis at a second frequency of rotations per minute. In some cases, the two types of motion are generated by an eccentric drive pin engaging an annular slot which has gear teeth along one side, thereby generating an angular rotation step of the tool holder during each reciprocating stroke. In some cases, the first frequency is at least one order of magnitude greater than the second frequency.
    • 用于与电动动力手柄一起用于移位牙科工具的牙科工具置换装置包括具有用于接收牙科工具的插座和驱动装置的工具夹具。 驱动装置限定了从电动动力手柄到工具架的传动装置,使得工具架以每分钟振荡的第一频率平行于工具轴线进行往复运动,并以每分钟转动的第二频率绕工具轴线旋转 。 在一些情况下,两种类型的运动是由偏心驱动销产生的,该偏心驱动销与环形槽啮合,该环形槽沿着一侧具有齿轮齿,从而在每次往复行程期间产生工具架的角度旋转步骤。 在一些情况下,第一频率比第二频率至少大一个数量级。
    • 19. 发明公开
    • FÜLLMATERIALSTIFT FÜR EINEN ZAHN-WURZELKANAL
    • FÜREMATERIALSTIFTFÜREINEN ZAHN-WURZELKANAL
    • EP2254500A1
    • 2010-12-01
    • EP09713081.9
    • 2009-02-11
    • Adolf Pfaff Dr. Karl-friedrich Reichenbach GbR
    • PFAFF, AdolfREICHENBACH, Karl-Friedrich
    • A61C5/02A61C5/04
    • A61C13/30A61C5/40A61C5/50A61C2201/007
    • The invention relates to a filling material pin (1), comprising flexible material and used for filling a root canal (6) of a tooth, wherein the flexible material is memory material, which expands upon heating to the tooth or body temperature in the form of a volume change. The exterior of the filling material pin (1) is profiled at least across the length thereof that is effective in the use position such that regions having both larger and smaller cross-sections alternate in the axial direction, which can be achieved in a particularly useful and simple manner by means of a helical, threaded, or worm shape of the profiling, which simultaneously pushes an added cement or filling material even better and deeper into the canal (6) upon pivoting the filling material pin (1) inserted into the root canal (6), thus allowing air contained therein to escape.
    • 填充材料销(1)由柔性材料制成,用于填充牙根部(6)。 柔性材料是记忆材料,其以体积变化的形式在加热到牙齿或体温时膨胀。 填充材料销(1)的外部至少在其长度上成型,其在使用位置上有效,使得具有较大和较小横截面的区域在轴向方向上交替,这可以在特别有用的 并且简单地通过螺旋形,螺纹形或蜗形形状的轮廓,其在旋转插入根管中的填充材料销(1)时同时推动添加的水泥或填充材料更有效和更深地进入管(6) 6),从而允许其中包含的空气逸出。