US Patent Issued to Ivoclar Vivadent on Dec. 9 for "Method for manufacturing a multi-color dental restoration" (Swiss, Austrian Inventors)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,144, issued on Dec. 9, was assigned to Ivoclar Vivadent AG (Schaan, Liechtenstein).

"Method for manufacturing a multi-color dental restoration" was invented by Christian Ritzberger (Grabs, Switzerland), Marc Dittmer (Feldkirch, Austria), Markus Rampf (Seewis-Dorf, Switzerland) and Christian Niedrig (Azmoos, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process for the preparation of multi-coloured dental restorations is described, in which glasses and glass ceramics with various compositions are given the shapes of dental restorations and colour changes are effected in the glasses and glass ceramics by irradiating them with artificial ...