Granted Patent B2

US 12,251,289 · App. 18/135,564 · Granted Mar 18, 2025

Inventors: Heng Cao (Santa Clara, CA); Vadim Matov (San Jose, CA); John Y. Morton (San Jose, CA); Jon Moss (Antioch, CA); Ryan Kimura (San Jose, CA)

Assignee: ALIGN TECHNOLOGY, INC.

A61C7/08A61C7/002

Abstract

Claims (23)

1. A method of using an orthodontic appliance, comprising:

administering to a patient the orthodontic appliance, the orthodontic appliance comprising:

a shell having teeth receiving cavities shaped to receive and reposition the patient's teeth, at least one of the cavities shaped to apply a resilient repositioning force to move at least one of the patient's teeth from a current arrangement toward a target arrangement;

a ridge having a width and a length greater than the width, the ridge configured to apply at least a portion of the resilient repositioning force to the at least one of the patient's teeth; and

a modification to a portion of the shell to compensate for a contact of the portion of the shell with the at least one patient's tooth due to positioning of the ridge in one or more of the teeth receiving cavities of the shell.

2. The method of claim 1 , wherein the orthodontic appliance is one of a plurality of appliances shaped to receive and resiliently reposition the at least one tooth of the patient through a plurality of planned successive tooth arrangements.

3. The method of claim 2 , further comprising:

removing the orthodontic appliance after the patient's teeth have reached a tooth arrangement of the plurality of planned successive tooth arrangements; and

administering a second orthodontic appliance of the plurality of appliances after removing the orthodontic appliance, wherein the second orthodontic appliance corresponds to the tooth arrangement of the plurality of planned successive tooth arrangements.

4. The method of claim 2 , wherein the plurality of planned successive tooth arrangements are based at least in part on models of the patient's teeth generated prior to starting the orthodontic treatment plan.

5. The method of claim 2 , wherein the plurality of appliances comprise:

a first appliance to reposition teeth from an initial tooth arrangement to a first intermediate arrangement;

at least one intermediate appliance to progressively reposition teeth from the first intermediate arrangement to successive intermediate arrangements; and

a final appliance to progressively reposition teeth from a last intermediate arrangement toward a final arrangement.

6. The method of claim 1 , further comprising applying the resilient repositioning force to at least one of the patient's teeth.

7. The method of claim 1 , further comprising compensating for the contact of the portion of the shell with the at least one patient's tooth.

8. The method of claim 1 , wherein the at least a portion of the resilient repositioning force corresponds to a selected tooth movement.

9. The method of claim 1 , wherein the contact comprises an unwanted distortion in a shape of the appliance when administered to the patient.

10. The method of claim 1 , wherein the contact comprises an unwanted force vector applied to a received tooth by a surface of the appliance.

11. The method of claim 10 , wherein the modification comprises adding a relief to the portion of the shell so as to counteract the unwanted force vector.

12. The method of claim 1 , wherein the modification comprises changing a shape or curvature of a surface without removing a portion of the appliance.

13. The method of claim 1 , wherein the ridge includes a hollow ridge.

14. The method of claim 1 , wherein the ridge further comprises a material deposited therein.

Assignments (1)

Continuity (5)

References Cited (163)

Cited By (1)

US 12,697,198