ALEXANDRIA, Va., March 3 -- United States Patent no. 12,567,221, issued on March 3, was assigned to EXOCAD GMBH (Darmstadt, Germany).
"Determining a preparation surface" was invented by Maik Gerth (Seeheim-Jugenheim, Germany) and Esther Moll (Warthausen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method for determining a preparation surface of a tooth for preparing the tooth for receiving a dental restoration element. The method comprises receiving a three-dimensional digital tooth model, a three-dimensional digital restorative tooth model, a definition of a restoration area, a first value selected for a basic preparation depth of the preparation, and a second value sel...