公开(公告)号：US20100255442A1

公开(公告)日：2010-10-07

申请号：US12765273

申请日：2010-04-22

申请人： John T. McSpadden

发明人： John T. McSpadden

IPC分类号： A61C5/02

CPC分类号： A61C5/42

摘要： A multi-tapered endodontic file is provided, formed from shaft of material having a shaft. The shaft includes a working portion having one or more tissue-removing edges, points and/or surfaces. The working portion includes at least a first flute and a second flute. The first flute is tapered along its length in accordance with a first predetermined taper function. The second flute is tapered along its length in accordance with a second predetermined taper function.

摘要翻译： 提供多锥形牙根管锉，由具有轴的材料的轴形成。 轴包括具有一个或多个组织去除边缘，点和/或表面的工作部分。 工作部分至少包括第一槽和第二槽。 第一槽根据第一预定锥度函数沿其长度逐渐变细。 第二槽根据第二预定锥度函数沿其长度逐渐变细。

公开(公告)号：US5275562A

公开(公告)日：1994-01-04

申请号：US825955

申请日：1992-01-27

申请人： John T. McSpadden

发明人： John T. McSpadden

IPC分类号： A61C5/04 ,  A61K6/00 ,  A61C5/02 ,  A61G5/02

CPC分类号： A61C5/04 ,  A61C5/045

摘要： A method of obturating an extirpated root canal and an associated filler material utilizes two classes of gutta-percha, one class of which becomes plasticized at a predetermined temperature and the other class of which becomes plasticized at a temperature which is less than the predetermined temperature. In one embodiment of the method, the second class of gutta-percha is coated about the first class when in a plasticized condition, and in another embodiment of the method, the second class is pre-coated about the first class and the second class is heated to plasticized condition without plasticizing the first class. In either case, the first class of gutta-percha supports the plasticized second class when subsequently introduced into a root canal for filling the canal. To increase the rigidity of the first class of gutta-percha, the first class may be coated with a cured layer of methyl methacrylate before the second class of gutta-percha is coated about the first class. Following introduction of the two classes of gutta-percha into the canal, the classes may be condensed within the root canal system.

摘要翻译： 一种封闭消除根管和相关填充材料的方法利用两类gutta-percha，其中一类在预定温度下变形，另一类在低于预定温度的温度下变形。 在该方法的一个实施方案中，当处于塑化状态时，第二类gutta-percha围绕第一类涂覆，并且在该方法的另一个实施方案中，第二类是关于第一类预涂，而第二类是 加热至塑化条件，不会使头等塑化。 在任一种情况下，第一类gutta-percha在随后引入根管以填充运河时支持塑化的第二类。 为了增加第一类gutta-percha的刚性，第一类可以涂覆有甲基丙烯酸甲酯的固化层，然后在第一类涂覆第二类gutta-percha之前。 在将两类Gutta-percha引入运河后，这些类可以在根管系统内浓缩。

公开(公告)号：US5083923A

公开(公告)日：1992-01-28

申请号：US532588

申请日：1990-06-04

申请人： John T. McSpadden

发明人： John T. McSpadden

IPC分类号： A61C5/04

CPC分类号： A61C5/04 ,  A61C5/045

摘要： A method of obturating an extirpated root canal utilizes two types of filler material, one type of which is in the form of a gutta-percha point and the other type of which is a thermoplasticized gutta-percha having a melting temperature of about 15.degree. to 20.degree. C. less than the melting temperature of the gutta-percha point. The steps of the method include the introducing of an initial amount of thermoplasticized gutta-percha in a heated and softened condition into the root canal so that the initial amount fills the bottom of the canal. A gutta-percha point is then positioned within the root canal and another amount of thermoplasticized gutta-percha is introduced in a heated and softened condition into the canal. The thermoplasticized gutta-percha is then manipulated into contact with the portion of the gutta-percha point positioned within the root canal so that the gutta-percha point is fed into and compacted within the root canal with the thermoplasticized gutta-percha. Additional amounts of thermoplasticized gutta-percha are introduced and manipulated into contact with additional gutta-percha points as necessary to fill the root canal with a core of filler material.

摘要翻译： 填充拔除根管的方法使用两种类型的填充材料，一种类型的填充材料为gutta-percha点，另一种类型是热塑性gutta-percha，其熔化温度为约15°至 20℃以下，小于gutta-percha点的熔点。 该方法的步骤包括将加热和软化状态的初始量的热塑性胃肠引入根管，使得初始量填充管的底部。 然后将胃肠穿刺点定位在根管内，另外量的热塑性胃肠穿入加热和软化状态进入运河。 然后将热塑的gutta-percha操作与定位在根管内的Gutta-percha点的部分接触，从而将Gutta-percha点用热塑的gutta-percha进入并压实在根管内。 引入额外量的热塑性胃肠穿刺，并根据需要操作与附加的牙垢点接触，以填充填充材料的核心的根管。

公开(公告)号：US5067900A

公开(公告)日：1991-11-26

申请号：US638685

申请日：1991-01-08

申请人： John T. McSpadden

发明人： John T. McSpadden

IPC分类号： A61C5/04

CPC分类号： A61C5/04 ,  A61C5/045

摘要： An apparatus and method for applying gutta-percha to a shank-like carrier with which the gutta-percha is introduced into an extirpated root canal utilizes an elongated hollow barrel for holding an amount of gutta-percha and a plunger fitted within the barrel for sliding movement along the length of the barrel. The barrel is provided with a discharge opening at one end thereof into which one end of the shank-like carrier may be inserted. Upon heating the gutta-percha contained within the apparatus to a softened condition, inserting one end of the shank-like carrrier through the discharge opening, and then using the plunger toward the discharge end of the barrel to dispense gutta-percha therefrom while withdrawing the carrier from the discharge opening, the surface of the carrier is coated with the gutta-percha.

摘要翻译： 将gutta-percha应用于将gutta-percha引入拔除根管的柄状载体的装置和方法利用细长的中空筒，用于保持一定数量的gutta-percha和装在筒体内的柱塞，用于滑动 沿着桶的长度移动。 枪管在其一端设置有排放口，其中可以插入柄状载体的一端。 在将装置内容纳的软管装置加热到软化状态下，将柄状加载器的一端插入排放口，然后将柱塞朝向筒体的排出端排出， 载体从排出开口处，载体的表面涂覆有gutta-percha。

公开(公告)号：US4353698A

公开(公告)日：1982-10-12

申请号：US297007

申请日：1981-08-27

申请人： John T. McSpadden

发明人： John T. McSpadden

IPC分类号： A61C5/04 ,  A61C3/08

CPC分类号： A61C5/04 ,  A61C5/045

摘要： Disclosed is a dental tool for obturating stripped root canals, comprising an elongated rod-like body having a shank or handle and a working portion with radially outwardly extending shoulders or flutes facing away from the shank and making an angle with the longitudinal axis of the body of about 90.degree. or less. The diameter of the shoulders or flutes may be progressively diminished from adjacent the shank toward the end of the working portion to provide a taper, and in another embodiment the shoulders are continuous and spiraled. In use, the tool may be linearly and angularly reciprocally mounted in a power operator, and may be heated for softening the obturating materials, such a gutta-percha. The reciprocation of the tool, particularly the linear reciprocation, forces the shoulders into compressive contact with the softened material and, when adequate density is attained, backs out of the root canal naturally through reverse action without specific operator effort. Preferably, the flutes are doubled and continuous and means is provided to rotate the tool at high rpm, oppositely to the direction of the spiral.

摘要翻译： 公开了一种用于堵塞剥离的根管的牙科工具，其包括具有柄或手柄的细长杆状体，以及具有径向向外延伸的肩部或背向柄部的凹槽的工作部分，并且与身体的纵向轴线形成一定角度 约90度以下。 肩部或凹槽的直径可以从靠近工作部分的端部的柄部逐渐减小，以提供锥形，并且在另一个实施例中，肩部是连续的和螺旋形的。 在使用中，该工具可以线性地并且有角度地往复地安装在动力操作器中，并且可以被加热以软化封闭材料，例如牙膏。 工具的往复运动，特别是线性往复运动，迫使肩部与软化材料进行压力接触，并且当达到足够的密度时，通过反向作用自然地从根管中退出，而不需要特定的操作者的努力。 优选地，凹槽是双重和连续的，并且提供装置以与螺旋方向相反的高转速旋转工具。

公开(公告)号：US4299571A

公开(公告)日：1981-11-10

申请号：US63436

申请日：1979-08-03

申请人： John T. McSpadden

发明人： John T. McSpadden

IPC分类号： A61C1/00 ,  A61C5/02

CPC分类号： A61C5/023 ,  A61C1/003

摘要： Disclosed is a dental file for use in cleaning out or extirpating root canals, particularly those which are curved, wherein the file which conventionally is provided with cutting or abrading flutes, typically in a spiraled manner, is also provided with a smooth, non-abrading pilot end which rides on the deep inner portion of the root canal wall and prevents the file from straightening out and causing the end thereof to "zip" or slice into the canal wall in an uncontrolled manner.

摘要翻译： 公开了一种用于清洁或拔除根管，特别是弯曲的根管的牙科用品，其中通常以螺旋方式设置有切割或研磨的凹槽的文件也具有平滑的，不研磨的 先导端靠在根管壁的深部内部，防止文件矫直，使其末端以不受控制的方式“压缩”或切入管壁。

公开(公告)号：US20180049845A1

公开(公告)日：2018-02-22

申请号：US15680785

申请日：2017-08-18

申请人： John T. McSpadden

发明人： John T. McSpadden

IPC分类号： A61C5/42 ,  B24B19/02 ,  B24B19/04

CPC分类号： A61C5/42 ,  A61C2201/007 ,  B22F3/1055 ,  B22F5/06 ,  B22F7/06 ,  B22F2999/00 ,  B24B19/022 ,  B24B19/04 ,  B33Y70/00 ,  B33Y80/00 ,  B22F7/004 ,  B22F5/106

摘要： A method of manufacturing an endodontic instrument includes providing a metal alloy powder and forming an endodontic instrument by depositing and heating successive layers of the metal alloy poser according to an additive manufacturing process. Forming an endodontic instrument according to an additive manufacturing process allows for advanced features such as one or more voids in the interior region of the instrument.

公开(公告)号：US20120231413A1

公开(公告)日：2012-09-13

申请号：US13408562

申请日：2012-02-29

申请人： John T. McSpadden ,  Vinod Sikka

发明人： John T. McSpadden ,  Vinod Sikka

IPC分类号： A61C5/02 ,  B26D3/16 ,  B23P15/42 ,  B26D3/00

CPC分类号： B23P15/42 ,  A61C5/42 ,  B26F1/26 ,  B26F1/28 ,  Y10T29/1194 ,  Y10T29/49567

摘要： An endodontic instrument for use in a root canal procedure. The instrument is formed from a substantially hollow tube with at least one elongate slotted aperture extending along a portion of a length of the tube. One or more of the edges of the slotted aperture provide cutting surfaces for extirpating material from the walls of a root canal.

摘要翻译： 用于根管手术的根管器械。 仪器由基本上中空的管形成，具有至少一个细长的开槽孔，其沿管的长度的一部分延伸。 开槽孔的一个或多个边缘提供用于从根管的壁抽出材料的切割表面。

公开(公告)号：US5980250A

公开(公告)日：1999-11-09

申请号：US570283

申请日：1995-12-11

申请人： John T. McSpadden

发明人： John T. McSpadden

IPC分类号： A61C5/02 ,  A61C5/04

CPC分类号： A61C5/023 ,  B23B2251/241

摘要： The present invention disclosed herein is directed to improved endodontic dental instruments for extirpating and/or obturating a root canal. The dental instruments of the invention have at least one friction reducing element which assists in the removal of material from a tooth canal and which reduces frictional loads on the instrument during extirpating and obturating procedures.

摘要翻译： 本文公开的本发明涉及用于拔除和/或堵塞根管的改进的牙髓牙科器械。 本发明的牙科器械具有至少一个减摩元件，其有助于从牙槽中移除材料，并且在拔除和封闭手术过程中减少了仪器上的摩擦负荷。

公开(公告)号：US5104316A

公开(公告)日：1992-04-14

申请号：US511092

申请日：1990-04-19

申请人： John T. McSpadden

发明人： John T. McSpadden

IPC分类号： A61C5/02

CPC分类号： A61C5/023

摘要： An endodontic reamer or file instrument for cleaning and shaping root canals includes a shank having a tapered working portion extending along a section of the shank length to a leading end. A pilot is attached to the working portion adjacent the leading end and is smaller in diameter than is the working portion at the leading end. The working portion includes at least one continuous helical flute which spirals along its length and a helical land at the periphery of the working portion which extends between adjacent flutes. The working portion also includes at least one lip adjacent the pilot which has a cutting edge which lies generally in a radial plane of the shank, and each flute which spirals along the length of the working portion toward the leading end terminates at the cutting edge of a corresponding lip so that as the instrument is moved longitudinally through a root canal, root canal tissue disposed to one side of the pilot is exposed to the cutting edge of the working portion.

摘要翻译： 用于清洁和整形根管的牙髓扩孔器或文件仪器包括具有沿着柄长度的一部分延伸到前端的锥形工作部分的柄。 导向件附接到与前端相邻的工作部分，并且直径小于前端处的工作部分的直径。 工作部分包括沿着其长度螺旋的至少一个连续的螺旋槽和在相邻槽之间延伸的工作部分的周边处的螺旋接合面。 所述工作部分还包括邻近所述导向件的至少一个唇缘，所述​​至少一个唇缘具有通常位于所述柄的径向平面中的切割边缘，并且沿着所述工作部分的所述长度方向朝向所述前端螺旋的每个凹槽终止于 相应的唇缘，使得当仪器纵向移动通过根管时，设置在飞行员一侧的根管组织暴露于工作部分的切割边缘。