ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,544,196, issued on Feb. 10, was assigned to EXOCAD GMBH (Darmstadt, Germany).

"Dental model comprising a detachable tooth stump" was invented by Tillmann Steinbrecher (Seeheim-Jugenheim, Germany), Akira Schuettler (Mainz, Germany) and Stefan Thomas Boettner (Seeheim-Jugenheim, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a dental model (1) for dental-technical modeling having a model base (2) and having a tooth stump (4) that can be removed from the model base (2), the model base (2) having a receiving cavity (3) for receiving the tooth stump (4), the tooth stump (4) having a preparation section (5), the preparation se...