Patent 12023217 was granted and assigned to Align Technology on July, 2024 by the United States Patent and Trademark Office.
Positioning 3D virtual brackets on teeth for the precise positioning of conventional brackets and wire. Various reference features may be calculated for the teeth and used to calculate a position for the virtual bracket. Reference features that may be calculated include curve of Spee, Andrew's plane, and a facial axis of the clinical crown for the teeth.