US Patent Issued to The Argen on Feb. 24 for "Apparatus and method for manufacturing a dental milling block with a graduated color and/or translucency profile" (California Inventors)

ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,558,204, issued on Feb. 24, was assigned to The Argen Corp. (San Diego).

"Apparatus and method for manufacturing a dental milling block with a graduated color and/or translucency profile" was invented by Jeffery Lowthorp (Oceanside, Calif.) and Carlos Sanchez (La Jolla, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Apparatus and processes by providing for gradually interleaving layers of zirconia powders having different concentrations of colorants and yttria to obtain color and translucency gradients that more closely mimic natural teeth, in which apparatus includes a comb having a multiplicity of tines that is extended vertically into a mold c...