Clinician review of an orthodontic treatment plan and appliance

1. A method for providing three-dimensional models for use in orthodontics, the method comprising:

providing for display on a computer screen data of images of teeth of a patient in suggested post-treatment final tooth positions and orientations that are based on three-dimensional information of the shapes of the teeth of the patient, the suggested post-treatment final tooth positions and orientations being prepared by interaction by an operator and having one or more of the patient's teeth repositioned relative to a first arrangement of the patient's teeth;

receiving feedback information on the suggested post-treatment final positions and orientations from a person, other than the operator, who has interactively viewed a display of the provided images, the feedback information including a repositioning of at least one of the patient's teeth in the suggested post-treatment final tooth positions and orientations so as to produce a desired final arrangement of the patient's teeth; and

generating a plurality of three-dimensional models representing successive planned intermediate arrangements of the patient's teeth in a planned repositioning of the patient's teeth to the desired final arrangement, wherein at least one of the models is generated based on the feedback information.

2. The method of claim 1 , wherein the feedback information comprises textual feedback.

3. The method of claim 1 , wherein the person who has interactively viewed the display manipulates the data of images graphically.

4. The method of claim 1 , wherein at least one of the three-dimensional models comprises an initial data set that contains a three-dimensional representation of a group of teeth.

5. The method of claim 4 , wherein the initial data set is segmented into datasets representing each individual tooth in the group of teeth.

6. The method of claim 1 , further comprising using the plurality of three-dimensional models to fabricate a plurality of shell appliances based on the feedback information, the plurality of shell appliances having cavities shaped to receive and resiliently reposition teeth.

7. A method of providing a custom orthodontic appliance for repositioning teeth of a patient, the method comprising:

providing for display on a computer screen data of images of the teeth of the patient in suggested post-treatment final tooth positions and orientations that are based on three-dimensional information of the shapes of the teeth of the patient, the suggested post-treatment tooth positions and orientations being prepared by interaction by an operator and having one or more of the patient's teeth repositioned relative to a first arrangement of the patient's teeth;

receiving feedback information on the suggested post-treatment final positions and orientations from a person, other than the operator, who has interactively viewed a display of the provided images, the feedback information including a repositioning of at least one of the patient's teeth in the suggested post-treatment final tooth positions and orientations so as to produce a desired final arrangement of the patient's teeth;

generating a plurality of three-dimensional models representing successive planned intermediate arrangements of the patient's teeth in a planned repositioning of the patient's teeth to the desired final arrangment, wherein at least one of the models is generated based on the feedback information; and

outputting data to a fabrication machine for generating shell appliances having teeth receiving cavities corresponding to the successive planned intermediate arrangements of the patient's teeth.

8. The method of claim 7 , further comprising fabricating a plurality of shell appliances based on the feedback information, the plurality of shell appliances having cavities shaped to receive and resiliently reposition teeth.

9. The method of claim 8 , wherein the plurality of shell appliances reposition the patient's teeth from an initial arrangement to a final arrangement.

10. The method of claim 9 , wherein the successive planned intermediate arrangements comprise intermediate arrangements between the initial arrangement and the final arrangement.

11. A system for providing three dimensional models for use in orthodontics, the system comprising:

a computer comprising a display, processor, and storage media comprising instructions that, when executed, cause the computer to:

provide to the display data of images of teeth of a patient in suggested post-treatment final tooth positions and orientations that are based on three-dimensional information of the shapes of the teeth of the patient, the suggested post-treatment tooth positions and orientations being prepared by interaction by a first user and having one or more of the patient's teeth repositioned relative to a first arrangement of the patient's teeth;

receive feedback information on the suggested post-treatment final positions and orientations from a second user, who has interactively viewed the data of images of the teeth of the patient in suggested post-treatment final tooth positions and orientations, the feedback information including a repositioning of at least one of the patient's teeth in the suggested post-treatment final tooth positions and orientations so as to produce a desired final arrangement of the patient's teeth; and

generate a plurality of three-dimensional models representing successive planned intermediate arrangements of the patient's teeth in a planned repositioning of the patient's teeth to the desired final arrangement, wherein at least one of the models is generated based on the feedback information.

12. The system of claim 11 , wherein the instructions further cause the computer to:

output data to a fabrication machine for generating shell appliances having teeth receiving cavities corresponding to the successive planned intermediate arrangements of the patient's teeth.

13. The method of claim 11 , wherein the feedback information comprises textual feedback.