ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,527,648, issued on Jan. 20, was assigned to Align Technology Inc. (San Jose, Calif.).

"Photo-based dental appliance fit" was invented by Christopher E. Cramer (Durham, N.C.), Chad Clayton Brown (Cary, N.C.) and Guotu Li (Apex, N.C.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for dental treatment may include receiving a plurality of images of a patient, the plurality of images including the patient's dentition and an orthodontic appliance while the patient is wearing the orthodontic appliance, determining whether each of the plurality of images satisfy a plurality of detection criteria, segmenting the teeth in the images, segmenting the image...