ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,450,840, issued on Oct. 21, was assigned to EXOCAD GMBH (Darmstadt, Germany).

"Checking a physical dental element using motion tracking" was invented by Maik Gerth (Seeheim-Jugenheim, Germany) and Paul Schnitzspan (Seeheim-Jugenheim, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a method for checking a geometric form of a physical dental element using motion tracking and augmented reality. The method comprises a receiving of a three-dimensional digital model comprising a three-dimensional digital dental element, as well as repeatedly: a receiving of optical imaging data from an optical sensor device, a detecting of structural eleme...