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15 条记录 (耗时 0.013 秒)

    Root canal practice model
    1.
    发明授权
    Root canal practice model 失效
    根管实践模型

    公开(公告)号：US4137633A

    公开(公告)日：1979-02-06

    申请号：US792694

    申请日：1977-05-02

    申请人： Henry Kahn

    发明人： Henry Kahn

    IPC分类号： G09B23/28

    CPC分类号： G09B23/283

    摘要： A practice model to simulate a typical root canal of a human tooth for use in teaching the student the art of endodontia.

    摘要翻译： 一种模拟人牙典型根管的实践模型，用于教授学生牙髓遗传学的艺术。

    Handle for cutting and abrading instruments useful in the practice of endodontia
    2.
    发明授权
    Handle for cutting and abrading instruments useful in the practice of endodontia 失效
    用于实践牙髓缺损的切割和研磨仪器

    公开(公告)号：US4044468A

    公开(公告)日：1977-08-30

    申请号：US682361

    申请日：1976-05-03

    申请人： Henry Kahn

    发明人： Henry Kahn

    IPC分类号： A61C5/02

    CPC分类号： A61C5/023

    摘要： Improved handle means for files and reamers employed in the practice of endodontics to enable more dependable grip by the operator and to signal the operator that a desired position of the cutting surfaces is being maintained.

    摘要翻译： 改进的用于实践牙髓修复中使用的文件和铰刀的手柄装置能够使操作者获得更可靠的抓握并且向操作者发出指示切割表面的期望位置被维持的信号。

    Device useful in dental crown procedures and method of using the same
    3.
    发明授权
    Device useful in dental crown procedures and method of using the same 失效
    牙冠手术中使用的装置及其使用方法

    公开(公告)号：US3949476A

    公开(公告)日：1976-04-13

    申请号：US454154

    申请日：1974-03-25

    申请人： Henry Kahn

    发明人： Henry Kahn

    IPC分类号： A61C5/08 ,  A61C13/30

    CPC分类号： A61C5/08 ,  A61C13/30

    摘要： A device and method useful in the restoration of an abraded or broken tooth by the application to the stub, of a crown to replace the abraded or broken portions, the crown being secured to a prepared core. There is disclosed a "direct" method of preparing the core for the crown and a device to facilitate fabrication of the core and installation of the same in the mouth comprising simple, time-saving steps.

    摘要翻译： 一种用于通过应用于母棒来恢复磨损或断裂的牙冠的装置和方法，以更换磨损或破裂的部分，冠部固定到准备的芯部。 公开了一种制备冠部的芯的“直接”方法以及便于制造核心并将其安装在口中的装置，其包括简单且省时的步骤。

    Composition of and method of obtaining small particle size polymers and copolymers of vinyl chloride having a fused surface
    4.
    发明授权
    Composition of and method of obtaining small particle size polymers and copolymers of vinyl chloride having a fused surface 失效
    获得具有熔融表面的氯乙烯的小粒径聚合物和共聚物的组成和方法

    公开(公告)号：US3933771A

    公开(公告)日：1976-01-20

    申请号：US482111

    申请日：1974-06-24

    申请人： David W. Eastman ,  Anthony L. Lemper ,  Victor A. Pattison ,  George C. Hopkins ,  Henry Kahn ,  Jack L. Nickels

    发明人： David W. Eastman ,  Anthony L. Lemper ,  Victor A. Pattison ,  George C. Hopkins ,  Henry Kahn ,  Jack L. Nickels

    IPC分类号： C08F14/06 ,  C08F3/30 ,  C08F15/06

    CPC分类号： C08F14/06

    摘要： Polyvinyl chloride and polyvinyl chloride containing up to 20 percent of a comonomer can be obtained in the form of small particle size spherical glassy surface particles by a process of bulk polymerization of monomer or monomers comprising two stage polymerization wherein high shear agitation is used during the first stage and low shear agitation is used in the second stage. To obtain a reduction in particle size, the polymerization in the first stage is conducted in contact with at least one of (A) an additive comprising an organic or inorganic, inert, fine particle size material solid at least at reaction temperatures, and insoluble in said monomer or monomers used, and (B) a cationic, anionic, or non-ionic surface active agent. A portion of the polymerization in a second stage reaction is conducted at temperature and pressure sufficient to render the surface of the individual particles or agglomerates glassy and fused. The resulting polymers and copolymers produced have superior plastisol viscosity stability and fusion characteristics and excellent powder flow properties as compared to those of the prior art.

    摘要翻译： 含有高达20％共聚单体的聚氯乙烯和聚氯乙烯可以通过单体或单体的本体聚合方法以小粒径的球形玻璃状表面颗粒的形式获得，所述单体或单体包括两阶段聚合，其中在第一阶段使用高剪切搅拌 在第二阶段使用阶段和低剪切搅拌。 为了获得粒度的降低，第一阶段的聚合至少在反应温度下与（A）包含有机或无机，惰性，细粒度的材料固体的添加剂中的至少一种进行接触，并且不溶于 所述单体或单体，和（B）阳离子，阴离子或非离子表面活性剂。 在第二阶段反应中的一部分聚合在足以使单个颗粒或聚集体的表面玻璃化并熔融的温度和压力下进行。 生产的所得聚合物和共聚物与现有技术相比具有优异的增塑溶胶粘度稳定性和熔融特性以及优异的粉末流动性能。

    Cyanoacrylate root canal sealer
    5.
    发明授权
    Cyanoacrylate root canal sealer 失效
    氰基丙烯酸根管封口机

    公开(公告)号：US4526544A

    公开(公告)日：1985-07-02

    申请号：US553259

    申请日：1983-11-18

    申请人： Henry Kahn

    发明人： Henry Kahn

    IPC分类号： A61C5/04 ,  A61C5/02

    CPC分类号： A61C5/04

    摘要： A method of sealing a tooth's root canal using cyanoacrylate solution. A tooth undergoing endodontic treatment must have the pulp tissue removed and the canal cleansed and shaped. It then receives a coating of a cyanoacrylate solution to its walls. When hardened, this solution seals the dentinal tubules lining the walls of the root canal and lateral canals, when present, thus preventing communication from the canal to the periodontal membrane. When the apical foramen remains small, it also may be sealed to prevent the passage of fluids and microorganisms to the adjacent area. Including a component which renders the cyanoacrylate solution opaque to X-rays will permit examination throughout the endodontic procedure. The sealing solution may include methyl, ethyl, isopropyl, isopropyl alpha, or normal-butyl cyanoacrylate of medical grade purity.

    摘要翻译： 使用氰基丙烯酸酯溶液密封牙根管的方法。 进行牙髓治疗的牙齿必须清除牙髓组织，并清洁和造型运河。 然后在其壁上接收氰基丙烯酸酯溶液的涂层。 当硬化时，该溶液在存在的情况下密封衬在根管和外侧运河的壁上的牙质小管，从而防止从管道到牙周膜的连通。 当顶孔仍然很小时，也可以密封，以防止流体和微生物通过相邻区域。 包括使氰基丙烯酸酯溶液对X射线不透明的组分将允许在整个牙根治疗过程中进行检查。 密封溶液可以包括医学级纯度的甲基，乙基，异丙基，异丙基α或氰基丙烯酸正丁酯。

    Dental cap package
    6.
    发明授权
    Dental cap package 失效
    牙套包

    公开(公告)号：US4203515A

    公开(公告)日：1980-05-20

    申请号：US932510

    申请日：1978-08-10

    申请人： Henry Kahn ,  Sidney M. Libit

    发明人： Henry Kahn ,  Sidney M. Libit

    IPC分类号： A61C5/77 ,  B65D81/00 ,  A61C5/08

    CPC分类号： A61C5/10 ,  A61C5/002 ,  A61C2202/00 ,  Y10S206/82

    摘要： A package for holding a supply of small articles of assorted shapes to be conveniently dispensed singly, having features enabling one or more articles to be separated from the package while leaving the remainder undisturbed.

    摘要翻译： 用于保持供应各种形状的小物品的包装，以便单独方便地分配，具有使得一个或多个物品能够与包装分离的特征，同时使其余部分不受干扰。