Patents Assigned to Vita Zahnfabrik H. Rauter KG
  • Kiln utilizing infrared radiation in the range of 0.7 to 1.5 .mu.m to heat dental ceramic material
    Patent number: 4208573
    Abstract: A kiln for dental ceramic work comprises a retort housing and a heating means effective to generate the shortwave infrared radiation for heating dental ceramic material to the burning temperature of the ceramic mass within said retort housing. In a specific embodiment, the heating means is effective to provide wavelengths of about 0.7 to 1.5 .mu.m. Various disposition of infrared radiators and retort chamber materials are disclosed.
    Type: Grant
    Filed: November 9, 1977
    Date of Patent: June 17, 1980
    Assignee: Vita Zahnfabrik H. Rauter KG
    Inventor: Bernd Risse
  • Artificial teeth and method of manufacturing a denture
    Patent number: 3947963
    Abstract: This disclosure is directed to a method of manufacturing an artificial denture, such as a molar or molars having cusps and occlusal relief therebetween by providing a base surface which is generally planar and flat, providing cones each having a base and apex, securing the base of each cone upon the base surface, and covering the cones with dental material such that cusps are formed by the apices of the cones and occlusal relief is formed between the apices.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: April 6, 1976
    Assignee: Vita Zahnfabrik H. Rauter KG
    Inventor: Gerd Haker