Treatment planning and progress tracking systems and methods

Patent metadata

Field	Value
Publication number	US-11478333-B2
Application number	US-201916427029-A
Country	US
Kind code	B2
Filing date	May 30, 2019
Priority date	Jun 8, 2007
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

The present invention provides systems and methods of managing planning and delivery of an orthodontic treatment using planning tools, treatment guidelines, instructions and appointment planning tools customized to the individual patient being treated, as well as tools and methods for tracking delivery and patient progression through an orthodontic treatment plan.

First claim

What is claimed is:

1. A method of managing delivery of an orthodontic treatment plan, comprising:
generating a treatment plan for a patient, the treatment plan comprising a plurality of digital models of successive tooth arrangements for moving teeth along a treatment path from an initial arrangement toward a final arrangement, the treatment plan further comprising a scheduled treatment-progress tracking event timed to correspond to the patient wearing at least one retention appliance;
tracking progression of the patient's teeth along the treatment path after administration of a set of orthodontic shell appliances to the patient, wherein:
the set of orthodontic shell appliances is shaped based on the plurality of digital models of successive tooth arrangements and includes the at least one retention appliance,
the at least one retention appliance is a duplicate orthodontic shell appliance having the same geometries with respect to tooth receiving cavities as another appliance of the set of orthodontic shell appliances, and
the tracking progression comprises:
comparing, with a computing device, a digital model of a current arrangement of the patient's teeth to a digital model of a planned arrangement of the teeth, wherein the tracking is timed to correspond to the patient wearing the at least one retention appliance according to the treatment plan, and wherein the digital models of the current arrangement and of the planned arrangement are sufficiently detailed to allow the computing device to detect a deviation from the treatment plan before the deviation becomes substantially apparent by visual or clinical inspection, and
detecting, by the computing device, whether treatment has progressed substantially off-track;

generating a revised treatment plan where it is determined that the treatment has progressed substantially off-track, wherein the revised treatment plan corresponds to at least one new orthodontic shell appliance;
transmitting the revised treatment plan to a treating professional; and
fabricating, by a fabrication machine remote from the computing device, the at least one new orthodontic shell appliance corresponding to the revised treatment plan.

2. The method of claim 1 , wherein the at least one retention appliance comprises a plurality of duplicate shell appliances successively worn by the patient.

3. The method of claim 1 , wherein the treatment plan is based on an initial model of the patient's teeth generated prior to starting the treatment plan.

4. The method of claim 1 , wherein the revised treatment plan comprises a plurality of successive tooth arrangements to move the teeth along a revised treatment path from the current arrangement directly toward the final arrangement.

5. The method of claim 1 , further comprising setting an orientation of upper and lower jaws of the digital model of the current arrangement to substantially match a coordinate system of a previously segmented model.

6. The method of claim 1 , wherein generating the revised treatment plan comprises revising at least a portion of a gingival margin in a previously segmented model based on data from the digital model of the current arrangement.

7. The method of claim 1 , wherein generating the revised treatment plan comprises revising a tooth shape in a previously segmented model based on data from the digital model of the current arrangement.

8. The method of claim 7 , wherein the revised tooth shape represents an inter-proximal region reduction to the patient's teeth.

9. The method of claim 1 , further comprising comparing the digital model of the current arrangement to one or more previously segmented models so as to assess a cause for an off-track progression.

10. The method of claim 1 , further comprising synchronizing one or more aspects of the revised treatment plan so as to integrate revised treatment with an expectation of the treating professional or the patient.

11. A method of managing delivery of an orthodontic treatment plan, comprising:
generating, using a computing device, a case difficulty assessment based on information received about a dental condition of a patient prior to treatment and one or more treatment goals;
generating, using the computing device, a treatment plan for a patient, the treatment plan comprising a plurality of digital models of successive tooth arrangements for moving teeth along a treatment path from an initial arrangement toward a selected final arrangement, the treatmet plan further comprising a series of one or more treatment phases to move teeth along the treatment path, at least one treatment phase comprising a set of appliances each comprising a plurality of tooth receiving cavities, the set of appliances including at least one duplicate appliance having the same geometries with respect to tooth receiving cavities as another appliance of the set of appliances;
providing a customized set of treatment guidelines corresponding to a treatment phase of the treatment plan, the guidelines comprising one or more appointment planning recommendations based on the case difficulty assessment;
tracking progression of the patient's teeth along the treatment path, the tracking comprising:
comparing, using the computing device, a digital representation of an actual arrangement of the patient's teeth following administration of the set of appliances to a digital model of a planned tooth arrangement corresponding to one of the plurality of digital models of successive tooth arrangements to determine if the actual arrangement of the patient's teeth substantially matches the planned tooth arrangement, wherein the digital representation of the actual arrangement of the patient's teeth and the digital model of the planned tooth arrangement are sufficiently detailed to allow the computing device to detect a deviation from the treatment plan before the deviation becomes substantially apparent by visual or clinical inspection, and
detecting, by the computing device, that treatment has progressed substantially off-track;

generating an off-track indication comprising a revised treatment plan, wherein the revised treatment plan corresponds to at least one new orthodontic shell appliance;
fabricating, by a fabrication machine remote from the computing device, the at least one new orthodontic shell appliance corresponding to the revised treatment plan; and
transmitting the off-track indication to a treating professional.

12. The method of claim 11 , wherein the information received comprises an impression of the patient's teeth or a digital model thereof.

13. The method of claim 11 , wherein the case difficulty assessment comprises identifying a pre-determined level of difficulty associated with the one or more treatment goals.

14. The method of claim 11 , wherein the treatment plan is generated based on an outcome of the case difficulty assessment.

15. The method of claim 11 , wherein the treatment plan is based on an initial model of the patient's teeth generated prior to starting the treatment plan.

16. The method of claim 11 , wherein the plurality of digital models of successive tooth arrangements are generated prior to providing the set of appliances to the patient.

17. The method of claim 11 , wherein the one or more appointment planning recommendations comprise one or more recommended patient/practitioner appointments and a list of recommended tasks to be completed at each of the one or more appointments.

18. The method of claim 17 , wherein the customized set of treatment guidelines comprise instructions for administering treatmen

Assignees

• Align Technology Inc

Inventors

• Kitching Ian
• Sterental Rene
• Kuo Eric
• Shuman Lou

Classifications

• A61C7/00 Primary

  Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions · CPC title

• A61C7/002

  Orthodontic computer assisted systems · CPC title

• G16H20/00

  ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance · CPC title

• G16H50/50

  for simulation or modelling of medical disorders · CPC title