Granted Patent B2

US 12,263,060 · App. 18/350,626 · Granted Apr 1, 2025

Inventors: Mitra Derakhshan (Herndon, VA); Crystal Tjhia (Sunnyvale, CA); Rohit Tanugula (San Jose, CA); Yaser Shanjani (Sunnyvale, CA); Ryan Kimura (San Jose, CA); Bruce Cam (San Jose, CA); Eric Yau (Saratoga, CA); Yuxiang Wang (San Jose, CA); Ken Wu (San Jose, CA); Peter Webber (Redwood City, CA); Jun Sato (San Jose, CA); John Y. Morton (San Jose, CA)

Assignee: ALIGN TECHNOLOGY, INC.

A61C7/36A61C7/002A61C7/08A61C7/10B29C64/106B29C64/386B29C64/40B29L2031/7536B33Y50/02

Abstract

Claims (40)

1. A system for correcting malocclusions of a patient comprising:

a maxillary appliance having tooth receiving cavities shaped to receive teeth of a maxilla and a first elastic coupling at a gingival line of the maxillary appliance, wherein the first elastic coupling is configured for receiving an elastic;

a mandibular appliance having tooth receiving cavities shaped to receive teeth of a mandible; and

a corrective appliance having a first coupling configured to be coupled to the mandibular appliance at a first location on a first side of incisors of the patient distal to right incisors, a second coupling configured to be coupled to the mandibular appliance on a second side of the incisors distal to left incisors, and having an arm extending from the corrective appliance towards the gingival line of the maxillary appliance and being shaped to receive the elastic.

2. The system of claim 1 , wherein the first side and the second side are of respective right and left canines of the patient.

3. The system of claim 1 , further comprising:

a bridge extending between and connecting the first coupling and the second coupling along a lingual facing anterior surface of a mandibular arch of the patient.

4. The system of claim 1 , wherein a distal end of the arm is at a first distance away from an occlusal plane towards the gingival line.

5. The system of claim 4 , wherein:

the first elastic coupling is located at the first distance away from the occlusal plane towards the gingival line and the distal end of the arm is located a second distance away from the occlusal plane, the first distance being equal to the second distance.

6. The system of claim 4 , wherein:

the first elastic coupling is located the first distance away from the occlusal plane towards the gingival line and the distal end of the arm is located a second distance away from the occlusal plane towards the gingival line, the first distance being greater than the second distance.

7. The system of claim 1 , wherein the first coupling is shaped to engage with the mandibular appliance of the patient at central incisors of the patient.

8. The system of claim 1 , further comprising:

a guard attached to the arm and shaped to displace lips or cheeks of the patient away from the teeth of the patient.

9. The system of claim 1 , further comprising:

a first maxillary device extending from a buccal surface of the maxillary appliance and having a first engagement surface; and

a second mandibular device extending from a buccal surface of the mandibular appliance and having a second engagement surface, wherein an engagement of the first engagement surface with the second engagement surface advances the maxilla of the patient in an anterior direction.

10. The system of claim 9 , wherein the maxillary appliance is a transpalatal appliance and includes a transpalatal extension that extends between the tooth receiving cavities of a left side of the maxillary appliance and the tooth receiving cavities of a right side of the maxillary appliance.

11. The system of claim 1 , wherein:

the tooth receiving cavities of the maxillary appliance are shaped to reposition at least one tooth of the maxilla; and

the tooth receiving cavities of the mandibular appliance are shaped to reposition at least one tooth of the mandible.

12. The system of claim 1 , wherein:

the corrective appliance is shaped to releasable couple to the mandibular appliance.

13. The system of claim 1 , further comprising:

a first appliance coupling at an external surface of the mandibular appliance; and

a second appliance coupling at a tooth facing surface of the corrective appliance, the first appliance coupling and the second appliance coupling shaped to match each other and releasably couple the mandibular appliance to the corrective appliance.

14. The system of claim 1 , further comprising:

a protrusion on the mandibular appliance; and

a receptacle on the corrective appliance shaped to receive the protrusion of the mandibular appliance therein to couple the corrective appliance to the mandibular appliance.

15. The system of claim 14 , wherein the protrusion and the receptacle have a semicircular cross-sectional shape.

16. The system of claim 14 , wherein the protrusion has an engagement surface shaped to resist removal of the corrective applies from the mandibular appliance.

17. The system of claim 1 , further comprising:

a first protrusion on a buccal side of the mandibular appliance;

a second protrusion on a lingual side of the mandibular appliance;

a first receptacle on a buccal side of the corrective appliance shaped to receive the first protrusion of the mandibular appliance therein to couple the corrective appliance to the mandibular appliance; and

a second receptacle on a lingual side of the corrective appliance shaped to receive the second protrusion of the mandibular appliance therein to couple the corrective appliance to the mandibular appliance.

18. The system of claim 17 , wherein the first and second protrusions and the first and second receptacles have a semicircular cross-sectional shape.

19. The system of claim 17 , wherein the corrective appliance is directly fabricated.

20. The system of claim 1 , wherein the first elastic is configured to impart a force on the maxilla, the force being in an anterior direction and a direction towards an occlusal plane.

Continuity (3)

References Cited (150)