Dental appliance with cavity for an unerupted or erupting tooth

• US 10,537,405 B2
• Filed: 08/14/2017
• Issued: 01/21/2020
• Est. Priority Date: 11/13/2014
• Status: Active Grant

• Current Assignee: Align Technology Incorporated
• Original Assignee: Align Technology Incorporated
• Inventors: Choi, Jeeyoung, Li, Chunhua, Morton, John, Pesenti, Bastien, Matov, Vadim, Beliaev, Alexander, Ushanov, Petr, Roschin, Roman A.
• Primary Examiner(s): Stice, Paula J
• Application Number:
  US15/676,819
• Publication Number:
  US 20170340415A1
• Time in Patent Office: 890 Days
• CPC Class Codes: A61C 7/002 Orthodontic computer assisted systems
• CPC Class Codes: A61C 7/08 Mouthpiece-type retainers or positioners, e.g. for both the lower and upper arch arch-shaped medicament applicators for teeth or gums A61C19/063; mouthguards for protecting the teeth of sportsmen A63B71/085

Abstract

A method includes to receive, via a computing device, data representing a plurality of teeth, identify data indicating which of the plurality of teeth are unerupted or erupting, predict at least one characteristic of a tooth of the unerupted or erupting teeth after they have fully erupted using one or more tooth eruption prediction factors, generate new data representing the unerupted or erupting teeth in multiple states of eruption based upon the predicted at least one characteristic of the fully erupted teeth, and generate a series of incremental tooth arrangements with the new data to define a proposed orthodontic treatment based on the new data representing the unerupted or erupting teeth in multiple states of eruption.

Claims

1. A method for defining an unerupted or erupting tooth during a proposed orthodontic treatment, comprising:

identifying, via a computing device, whether a patient'"'"'s arch contains an unerupted or erupting tooth;

obtaining dimensional tooth data for at least one dimension of at least one tooth based on one or more tooth eruption prediction factors;

determining a first projected dimension for the unerupted or erupting tooth based on the dimensional tooth data;

determining a scaling factor for the first projected dimension of a cavity of a dental appliance positioned to accommodate the unrequited or erupting tooth as the tooth erupts; and

creating the dental appliance having multiple cavities formed therein, wherein each cavity is used to receive one or more teeth of the patient therein, the dental appliance including the cavity sized according to the determined scaled first projected dimension for the unerupted or erupting tooth.

2. The method of claim 1, wherein the scaling factor is based on a calculation of available space in a corresponding dimension around the unerupted or erupting tooth and sized such that the unerupted or erupting tooth will not contact a surface of the cavity as the tooth erupts during a period of treatment.

3. The method of claim 1, wherein the cavity sized according to the determined scaled first projected dimension for the unerupted or erupting tooth is positioned to accommodate the unerupted or erupting tooth as the tooth erupts during the period of treatment.

4. The method of claim 1, wherein the dental appliance configured to reposition at least one tooth of the patient is a virtual dental appliance.

5. The method of claim 1, wherein the dental appliance configured to reposition at least one tooth of the patient is a physical dental appliance.

6. The method of claim 1, wherein obtaining dimensional tooth data for at least one dimension of at least one tooth of the patient includes obtaining dimensional tooth data for at least one dimension of:

at least one of a tooth adjacent to the unerupted or erupting tooth, an opposing tooth to the unerupted or erupting tooth, or a counterpart tooth to the unerupted or erupting tooth.

7. A method for accommodating an unerupted or erupting tooth during at least a portion of a treatment plan, comprising:

predicting at least one of a size, shape, location, and orientation of an unerupted or erupting tooth;

determining a scaling factor for a first projected dimension of a cavity for accommodating the unerupted or erupting tooth as the tooth erupts; and

creating a vitual shell on a computing device having a plurality of cavities to receive teeth of a jaw, wherein at least one of the plurality of cavities created is the cavity for accommodating the unerupted or erupting tooth.

8. The method of claim 7, wherein the cavities for accommodating an unerupted or erupting tooth include a gingival edge and wherein the gingival edge is oriented and shaped based upon a prediction of at least one of the orientation and shape of the gingiva that will be adjacent to the gingival edge.

9. The method of claim 7, wherein the cavities for accommodating an unerupted or erupting tooth each differ in at least one of:

size, shape, location, or orientation.

10. The method of claim 7, wherein the cavities for accommodating an unerupted or erupting tooth have at least one characteristic of:

size, shape, location, or orientation based on data representing the unerupted or erupting teeth in multiple states of eruption that is based upon one or more tooth eruption prediction factors of at least one fully erupted tooth of a patient.

11. The method of claim 7, wherein the cavities for accommodating an unerupted or erupting tooth have at least one characteristic of:

size, shape, location, or orientation based on data including at least one of;

a size, shape, location, and orientation of a tooth adjacent to the unerupted or erupting tooth.

12. A non-transitory computing device readable medium having instructions stored thereon that are executable by a processor to cause a computing device to:

identify, via a computing device, whether a patient'"'"'s arch contains an unerupted or erupting tooth;

obtain dimensional tooth data for at least on dimension of at least one tooth based on one or more tooth eruption prediction factors;

determine a first projected dimension for the unerupted or erupting tooth based on the dimensional tooth data;

determine a scaling factor for the first projected dimension of a cavity of a dental appliance positioned to accommodate the unerupted or erupting tooth as the tooth erupts; and

create the dental appliance configured to reposition at least one tooth of the patient based on the one or more tooth eruption prediction factors and the dimensional tooth data, wherein the dental appliance includes the cavity sized according to the determined scaled first projected dimension for the unerupted or erupting tooth.

13. The medium of claim 12, wherein the cavity sized according to the determined scaled first projected dimension for the unerupted or erupting tooth is positioned to accommodate the unerupted or erupting tooth as the tooth erupts during a period of treatment.

14. The medium of claim 13, wherein the period of treatment is from a current state of the plurality of the teeth through the end of a treatment plan.

15. The medium of claim 13, wherein the period of treatment is one period in a treatment plan that is divided into multiple, sequential periods of treatment.

16. The medium of claim 12, wherein the dental appliance configured to reposition at least one tooth of the patient is a virtual dental appliance.

17. The medium of claim 12, wherein the dental appliance configured to reposition at least one tooth of the patient is a physical dental appliance.

18. The medium of claim 12, wherein obtaining dimensional tooth data for at least one dimension of at least one tooth of the patient includes obtaining dimensional tooth data for at least one dimension of:

at least one of a tooth adjacent to the unerupted or erupting tooth, an opposing tooth to the unerupted or erupting tooth, or a counterpart tooth to the unerupted or erupting tooth.

19. The medium of claim 12, wherein the one or more tooth eruption prediction factors includes obtaining dimensional data for at least one dimension of at least one of:

a tooth adjacent to the unerupted or erupting tooth, an opposing tooth to the unerupted or erupting tooth, or a counterpart tooth to the unerupted or erupting tooth.

20. The medium of claim 12, wherein the cavities for accommodating an unerupted or erupting tooth include a gingival edge and wherein the gingival edge is oriented and shaped based upon a prediction of at least one of the orientation and shape of the gingiva that will be adjacent to the gingival edge.