Patents Assigned to Steven Edward Severy
  • Patent number: 5308243
    Abstract: The invention provides methods for making naturally appearing dental restorations, compositions of matter used in said methods and articles so formed, the resulting articles being visually life-like dental porcelain restorations formed of porcelain layers at least certain of which are modified to cause light entering a restoration to be internally reflected within the layers of the restoration to produce an opalescence virtually identical to that of natural teeth. Porcelain layers unique to the present dental restorations include colored pigments or chromas selected to replace those chromatic values which are usually absorbed within conventional porcelain restorations, the present restorations therefore transmitting essentially the same high value of light back out of the restorations which initially entered the restorations.
    Type: Grant
    Filed: September 17, 1992
    Date of Patent: May 3, 1994
    Assignee: Steven Edward Severy
    Inventor: James D. Emmons