Having Pin Extending Into Facing Patents (Class 433/210)
  • Patent number: 6638069
    Abstract: Shaping cap made of ceramic, metal or plastic material, which is suitable as a solid constituent of dental pin structures.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: October 28, 2003
    Assignee: Ivoclar Vivadent AG
    Inventors: Konrad Hagenbuch, Gerhard Zanghellini
  • Patent number: 4668192
    Abstract: The present invention is provided to render quality orthodontic treatment, with proper dispersion of the patient's teeth roots in the supporting medium. The present system involves procedure which establishes and records the location of the patient's individual tooth roots to the visual crowns of the associated teeth. This is accomplished by use of simulated root structures that are attachable to individual crown models of the patient's teeth and oriented in relation to the models such that the axes of the associated roots are made accessible. The individual simulated root structures may be attached to crown models taken from a direct impression from the patient's mouth. The individual crown models are aligned in a surveyor mechanism and attached with their long axes in coaxial alignment with the central axes of dop rods. The dop rods are then held on a grinding rack and moved toward a flat grinding surface which produces a plane flat surface on each crown model.
    Type: Grant
    Filed: December 16, 1983
    Date of Patent: May 26, 1987
    Inventor: Joseph J. Lavin