Systems and methods for correcting malocclusions of teeth

Patent metadata

Field	Value
Publication number	US-11793608-B2
Application number	US-202117525669-A
Country	US
Kind code	B2
Filing date	Nov 12, 2021
Priority date	Nov 1, 2017
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

A system for correcting class III malocclusions is disclosed. The system may include a maxilla appliance having tooth receiving cavities shaped to receive teeth of the maxilla and a first coupling for receiving an elastic. The system may also include a mandibular appliance having tooth receiving cavities shaped to receive teeth of the mandible. In some embodiments, the system includes a class III corrective appliance having a first mount shaped to engage with the mandibular arch of the patient and having a second coupling shaped to receive the elastic.

First claim

What is claimed is:

1. A system for correcting malocclusions of a patient comprising:
a maxillary appliance having tooth receiving cavities shaped to receive teeth of the maxilla and a first coupling disposed at a first distance away from an occlusal plane towards the gingival line of the patient, wherein the first coupling is configured for receiving an elastic;
a mandibular appliance having tooth receiving cavities shaped to receive teeth of the mandible; and
a corrective appliance having (i) a first mount shaped to engage with the mandibular appliance of the patient at a first location and having a second coupling shaped to receive the elastic, and (ii) a second mount shaped to engage with the mandibular appliance of the patient at a second location; wherein the first location and the second location are of respective first and second canines of the patient.

2. The system of claim 1 , wherein the second coupling is at the first distance away from the occlusal plane towards the gingival line of the patient.

3. The system of claim 1 , wherein:
the first coupling is located at the first distance away from the occlusal plane towards the gingival line of the patient and the second coupling is located a second distance above the occlusal plane of the patient, the first distance being equal to the second distance.

4. The system of claim 1 , wherein:
the first coupling is located the first distance away from the occlusal plane towards the gingival line of the patient and the second coupling is located a second distance away from the occlusal plane towards the gingival line of the patient, the first distance being greater than the second distance.

5. The system of claim 1 , further comprising:
a bridge extending between and connecting the first mount and the second mount, the bridge having a surface shaped to match a lingual facing anterior surface of the patient's mandibular arch.

6. The system of claim 1 , further comprising:
a guard attached to the second coupling and shaped to displace the lips or the cheeks of the patient away from the teeth of the patient.

7. 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 an engagement surface, wherein the engagement of the first engagement surface with the second engagement surface advances the maxilla of the patient in an anterior direction.

8. The system of claim 1 , further comprising:
an arm extending from the first mount to a position away from the occlusal surface of the first mounts towards the gingival line, the second coupling located at a terminal end of the arm.

9. The system of claim 1 , wherein:
the tooth receiving cavities of the maxillary appliance are shaped to reposition at least one tooth of the maxillary arch; and
the tooth receiving cavities of the mandibular appliance are shaped to reposition at least one tooth of the mandibular arch.

10. The system of claim 1 , wherein:
the corrective appliance is shaped to releasable couple to the mandibular appliance.

11. The system of claim 1 , wherein:
the corrective appliance is shaped to resist removal from the mandibular appliance.

12. The system of claim 1 , wherein the second coupling further comprises a receptacle.

13. The system of claim 12 , wherein the second coupling further comprises a finger extension on a side of the receptacle.

14. The system of claim 13 , wherein the finger extension and the receptable position the elastic at a particular location relative to the patient's jaw.

15. The system of claim 13 , wherein the finger extension and the receptable position the elastic at a particular location relative to one or more of the maxillary appliance, the mandibular appliance, and the corrective appliance.

16. The system of claim 1 , wherein in the first coupling or the second coupling comprise a hook shaped extension.

17. The system of claim 1 , wherein the first mount or the second mount comprises a semicircular cross-sectional shape.

18. The system of claim 1 , wherein the corrective appliance is formed indirectly through a thermoforming process.

19. The system of claim 1 , wherein the corrective appliance is formed through directly fabrication by extruding polymeric material in a layer-by-layer fashion.

20. The system of claim 19 , wherein the polymeric material is selected from the group consisting of a styrenic block copolymer, a silicone rubber, an elastomeric alloy, a thermoplastic elastomer, a thermoplastic vulcanizate elastomer, a polyurethane elastomer, a block copolymer elastomer, a polyolefin blend elastomer, a thermoplastic co-polyester elastomer, a thermoplastic polyamide elastomer, or a combination thereof.

Assignees

• Align Technology Inc

Inventors

• Derakhshan Mitra
• Tjhia Crystal
• Tanugula Rohit
• Shanjani Yaser
• Kimura Ryan
• Cam Bruce
• Yau Eric
• Wang Yuxiang
• Wu Ken
• Webber Peter
• Sato Jun
• Morton John Y

Classifications

• A61C7/36 Primary

  Devices acting between upper and lower teeth · CPC title

• A61C7/002

  Orthodontic computer assisted systems · CPC title

• A61C7/08

  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)} · CPC title

• A61C7/10

  Devices having means to apply outwardly directed force, e.g. expanders · CPC title

• B29C64/106

  using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material · CPC title