ALEXANDRIA, Va., June 10 -- United States Patent no. 12,290,421, issued on May 6, was assigned to Apollonia FLA LLC (Naples, Fla.).

"Adjustable dental impression tray with adaptive lock" was invented by James C. DiMarino (Naples, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An improved dental impression tray system provides a way to accommodate multiple arch sizes. The tray is adjustable and has an anterior section with two distal ends and a posterior section with two distal ends. The two sections are connected together at their distal ends. A mesh membrane extends between the sections to maintain the impression material. The ends of the posterior section include a plurality of vertical pins and a ver...