Patent attributes
Determining an orthodontic treatment having sequential treatment steps defining treatment intervals therebetween. The method comprises obtaining a segmented 3D model of teeth; obtaining start and desired end positions of each tooth; determining an initial number of sequential treatment steps; for each tooth and for each treatment interval, determining a root force imposed on a root portion of the given tooth by a given orthodontic appliance; in response to the root force of each tooth not exceeding a predetermined threshold value, determining that the determined initial number of sequential treatment steps is the determined orthodontic treatment; and in response to the root force exceeding the predetermined threshold value, iteratively decreasing the initial distance of each treatment interval to provide a revised number of sequential treatment steps, and re-calculating the root force until it is determined that the root force of each tooth does not exceed the predetermined threshold value.
