Dental model superimposition using clinical indications

An apparatus for displaying progress of an orthodontic treatment, the apparatus comprising:

• a) a device that is configured to obtain a first 3D model of the patient's dentition and a second 3D model of the patient's dentition;
• b) a processor that is configured to execute programmed instructions for:
• (i) obtaining the first and second 3D models;
• (ii) segmentation of teeth in the obtained 3D models;
• (iii) identification of at least one selected tooth in the first and second 3D models;
• (iv) determination of a post-treatment target position for the selected tooth of the first 3D model according to a movement indication calculated for the selected tooth, wherein the movement indication specifies a translation or rotation of the selected tooth;
• (v) registration of the second 3D model to the first 3D model according to the determined post-treatment target position of the selected tooth;
• and
• c) a display in signal communication with the processor for displaying an imposition of the second 3D model onto the first 3D model of the patient dentition.