Creating a digital dental model of a patient's teeth using interproximal information

Patent metadata

Field	Value
Publication number	US-11534266-B2
Application number	US-202016846118-A
Country	US
Kind code	B2
Filing date	Apr 10, 2020
Priority date	Dec 19, 2012
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

Creating a digital tooth model of a patient's tooth using interproximal information is provided. Interproximal information is received that represents a space between adjacent physical teeth of the patient. A digital teeth model of a set of physical teeth of the patient that includes the adjacent physical teeth is received. One or more digital tooth models is created that more accurately depicts one or more of the physical teeth than the corresponding digital teeth included in the digital teeth model based on the interproximal information.

First claim

What is claimed is:

1. A method of generating a digital dental model of a patient's teeth, the method comprising:
receiving, by a digital-teeth-model-receiving-component, a first digital scan of the patient's teeth, wherein the first digital scan comprises a first three-dimensional digital teeth model;
receiving, by the digital-teeth-model-receiving-component, a second digital scan of the patient's teeth, wherein the second digital scan comprises a scannable object inserted in an interproximal space between a first tooth and a second tooth of the patient's teeth, wherein dimensions of the interproximal space cannot be determined from the first digital scan;
determining, by an interproximal-information-obtaining-component, interproximal information of the patient's teeth, wherein the interproximal information is based at least in part on the second digital scan, and wherein the interproximal information comprises a distance of the interproximal space between the first tooth and the second tooth of the patient's teeth; and
generating, by a digital-teeth-model-creation-component, a modified three-dimensional digital teeth model based at least in part on the first three-dimensional digital teeth model and the interproximal information,
wherein the modified three-dimensional digital teeth model is generated by digitally removing, from the first three-dimensional digital teeth model, three-dimensional model portions corresponding to the interproximal space between the first tooth and the second tooth of the patient, thereby providing a depiction of the interproximal space between the first tooth and the second tooth of the patient's teeth.

2. The method of generating the digital dental model of claim 1 , wherein the scannable object comprises a known thickness.

3. The method of generating the digital dental model of claim 1 , wherein the scannable object comprises indicia to determine the distance of the interproximal space between the first tooth and the second tooth of the patient's teeth.

4. The method of generating the digital dental model of claim 1 , wherein the interproximal information is based at least in part on information received through a user interface.

5. The method of generating the digital dental model of claim 4 , wherein the user interface is configured to receive an input from a dental personnel related to the distance of the interproximal space between the first tooth and the second tooth of the patient's teeth.

6. The method of generating the digital dental model of claim 4 , wherein the user interface is configured to provide a visual representation of the interproximal space between the first tooth and the second tooth of the patient's teeth.

7. The method of generating the digital dental model of claim 1 , the method further comprising receiving information indicating that interproximal reduction is planned to be or has been performed on the first tooth and the second tooth of the patient's teeth.

8. The method of generating the digital dental model of claim 1 , wherein generating the modified three-dimensional digital teeth model comprises segmenting the first three-dimensional digital teeth model based at least in part on the interproximal information.

9. The method of generating the digital dental model of claim 8 , wherein the modified three-dimensional digital teeth model comprises a plurality of digital tooth models.

10. The method of generating the digital dental model of claim 1 , wherein generating the modified three-dimensional digital teeth model comprises depicting contours of areas between the first tooth and the second tooth of the patient's teeth.

11. The method of generating the digital dental model of claim 1 , wherein the interproximal information represents a naturally occurring interproximal space between the first tooth and the second tooth of the patient's teeth.

12. The method of generating the digital dental model of claim 1 , wherein the interproximal information represents an artificially created interproximal space between the first tooth and the second tooth of the patient's teeth.

13. The method of generating the digital dental model of claim 1 , wherein the modified three-dimensional digital teeth model comprises one or more flattened surfaces for representing at least a portion of the first tooth or the second tooth near the interproximal space.

14. A system for creating a digital dental model of a patient's teeth, the system comprising:
a digital-teeth-model-receiving-component, wherein the digital-teeth-model-receiving-component is configured to receive 1) a first digital scan of the patient's teeth, wherein the first digital scan comprises a first three-dimensional digital teeth model, and 2) a second digital scan of the patient's teeth, wherein the second digital scan comprises a scannable object inserted in an interproximal space between a first tooth and a second tooth of the patient's teeth, wherein dimensions of the interproximal space cannot be determined from the first digital scan;
an interproximal-information-obtaining-component in association with the digital-teeth-model-receiving-component, wherein the interproximal-information-obtaining-component is configured to determine interproximal information of the patient's teeth, wherein the interproximal information is based at least in part on the second digital scan, and wherein the interproximal information comprises a distance of the interproximal space between the first tooth and the second tooth of the patient's teeth;
a digital-teeth-model-creation-component in association with the digital-teeth-model-receiving-component and the interproximal-information-obtaining-component, wherein the digital-teeth-model-creation-component is configured to generate a modified three-dimensional digital teeth model based at least in part on the first three-dimensional digital teeth model and the interproximal information,
wherein the modified three-dimensional digital teeth model is generated by digitally removing, from the first three-dimensional digital teeth model, three-dimensional model portions corresponding to the interproximal space between the first tooth and the second tooth of the patient, thereby providing a depiction of the interproximal space between the first tooth and the second tooth of the patient's teeth.

15. The system for creating the digital dental model of claim 14 , wherein the scannable object comprises a known thickness.

16. The system for creating the digital dental model of claim 14 , wherein the scannable object comprises indicia to determine the distance of the interproximal space between the first tooth and the second tooth of the patient's teeth.

17. The system for creating the digital dental model of claim 14 , the system further comprising a user interface, wherein the interproximal information is based at least in part on information received through the user interface.

18. The system for creating the digital dental model of claim 17 , wherein the user interface is configured to receive an input from a dental personnel related to the distance of the interproximal space between the first tooth and the second tooth of the patient's teeth.

19. The system for creating the digital dental model of claim 17 , wherein the user interface is configured to provide a visual representation of the interproximal space between the first tooth and the second tooth of the patient's teeth.

20. The system for creating the digital dental model of claim 14 , wherein the system is configured to receive information

Assignees

• Align Technology Inc

Inventors

• Grove Bob
• Kuo Eric

Classifications

• A61C7/002 Primary

  Orthodontic computer assisted systems · CPC title

• A61C9/0053

  Optical means or methods, e.g. scanning the teeth by a laser or light beam · CPC title