IP Library Granted Patent US 12,324,721
Granted Patent B2
US 12,324,721 · App. 18/435,971 · Granted Jun 10, 2025

Dental attachment positioning apparatuses

Inventors: Peter Webber (Redwood City, CA); Yan Chen (Cupertino, CA); Jihua Cheng (San Jose, CA); Bastien Pesenti (San Jose, CA); Chunhua Li (Cupertino, CA); Jennifer C. Chen (San Francisco, CA)
Assignee: Align Technology, Inc.
A61C7/08A61B1/0002A61B1/00045A61B1/24A61C7/146A61C7/16A61C19/003A61C2202/01A61N2005/063A61N2005/0661
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Quick Facts
Patent No.
US 12,324,721
App. No.
18/435,971
Filed
Feb 7, 2024
Granted
Jun 10, 2025
Kind
B2
Art Unit
3772
USPC
433/29
Abstract

Dental attachment positioning apparatuses and methods of use. A dental attachment apparatus may include an orthodontic attachment having a surface shaped to conform to a contour of a buccal surface of a tooth, and one or more registration surfaces that are shaped to conform to one or more occlusal surfaces of the patient's teeth. The one or more registration surfaces may be configured to aid in proper positioning or orientation of the orthodontic attachment. When the attachment positioning apparatus is placed on the patient's dentition, the orthodontic attachment is positioned at a specified location with respect to the buccal surface of the tooth.

Claims (37)

1. A method of bonding an orthodontic attachment to a tooth of a patient, the method comprising:

receiving an attachment placement structure, the attachment placement structure including a well holding the orthodontic attachment therein, the orthodontic attachment having a mating surface at a first opening of the well, wherein the mating surface of the orthodontic attachment is shaped to conform to a contour of a buccal surface of the tooth, wherein the attachment placement structure further includes:

one or more registration surfaces that conform to one or more occlusal surfaces of the patient's teeth to aid in proper positioning or orientation of the orthodontic attachment;

a release liner covering the first opening of the well and covering the mating surface of the orthodontic attachment; and

one or more second openings that provide sole access to the well holding the orthodontic attachment;

removing the release liner from the mating surface of the orthodontic attachment;

placing the attachment placement structure on the patient's dentition to position the orthodontic attachment at a specified location with respect to the buccal surface of the tooth; and

bonding the mating surface of the orthodontic attachment to the buccal surface of the tooth.

2. The method of claim 1 , further comprising rotating the orthodontic attachment from a first orientation to a second orientation after placement of the attachment placement structure.

3. The method of claim 1 , wherein the attachment placement structure is made of flexible material configured to be able to bend against an exterior surface of the tooth.

4. The method of claim 1 , wherein the attachment placement structure comprises multiple placement structures for different sections of the patient's dentition.

5. The method of claim 1 , further comprising removing the attachment placement structure from the patient's dentition.

6. The method of claim 1 , wherein the orthodontic attachment is directly bonded to the buccal surface of the tooth.

7. The method of claim 1 , wherein the orthodontic attachment is bonded to the buccal surface of the tooth via an adhesive.

8. The method of claim 1 , wherein bonding the orthodontic attachment to the buccal surface of the tooth comprises exposing a curable adhesive material to light.

9. The method of claim 1 , wherein the one or more registration surfaces are further configured to conform to a lingual surface of the patient's teeth.

10. The method of claim 1 , further comprising placing a dental appliance on the patient's dentition after the orthodontic attachment is bonded to the buccal surface of the tooth, wherein the dental appliance engages with the orthodontic attachment and applies controlled forces on the patient's teeth.

11. The method of claim 10 , wherein the dental appliance is an aligner, wherein the aligner generally conforms to the patient's teeth but is slightly out of alignment with a current tooth configuration.

12. The method of claim 1 , wherein the attachment placement structure is three-dimensionally fabricated.

13. An attachment positioning apparatus comprising:

a well holding an orthodontic attachment therein, the orthodontic attachment having a mating surface at a first opening of the well, wherein the mating surface of the orthodontic attachment is shaped to conform to a contour of a buccal surface of a patient's tooth;

one or more registration surfaces that are shaped to conform to one or more occlusal surfaces of the patient's teeth, wherein the one or more registration surfaces are configured to aid in proper positioning or orientation of the orthodontic attachment;

a release liner covering the first opening of well and covering the mating surface of the orthodontic attachment; and

one or more second openings that provide sole access to the well holding the orthodontic attachment,

wherein when the attachment positioning apparatus is placed on the patient's dentition, the orthodontic attachment is positioned at a specified location with respect to the buccal surface of the patient's tooth.

14. The attachment positioning apparatus of claim 13 , wherein the attachment positioning apparatus is made of flexible material configured to be able to bend against an exterior surface of a tooth.

15. The attachment positioning apparatus of claim 13 , wherein the attachment positioning apparatus comprises multiple structures for different sections of the patient's dentition.

16. The attachment positioning apparatus of claim 13 , wherein the orthodontic attachment is configured to be directly bonded to the buccal surface of the patient's tooth.

17. The attachment positioning apparatus of claim 13 , wherein the orthodontic attachment is configured to be bonded to the buccal surface of the patient's tooth via a light curable adhesive.

18. The attachment positioning apparatus of claim 13 , wherein the attachment positioning apparatus further comprises one or more second registration surfaces that are configured to conform to a lingual surface of the patient's teeth.

19. The attachment positioning apparatus of claim 13 , wherein the attachment positioning apparatus is three-dimensionally fabricated.

20. An attachment positioning apparatus comprising:

a plurality of wells holding a plurality of corresponding orthodontic attachments therein, wherein each of the plurality of orthodontic attachments has a mating surface at a first opening of a corresponding well, wherein the mating surface of each of the plurality of orthodontic attachments is shaped to conform to a contour of a buccal surface of a corresponding patient's tooth, wherein each of the plurality of wells comprises:

a release liner covering the first opening of well and covering the mating surface of the corresponding orthodontic attachment; and

one or more second openings that provide sole access to the well holding the corresponding orthodontic attachment; and

one or more registration surfaces that are shaped to conform to one or more occlusal surfaces of the patient's teeth, wherein the one or more registration surfaces are configured to aid in proper positioning or orientation of the plurality of orthodontic attachments;

wherein when the attachment positioning apparatus is placed on the patient's dentition, the plurality of orthodontic attachments are positioned at specified locations with respect to the buccal surfaces of corresponding teeth.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 1, 2024
From: WEBBER, PETER; CHEN, YAN; CHENG, JIHUA; PESENTI, BASTIEN; LI, CHUNHUA; CHEN, JENNIFER C.
To: ALIGN TECHNOLOGY, INC.
Reel/Frame 066619/0793 →
Continuity (2)
Continuation 14939252 · Nov 12, 2015
Related Publication 20240173102A1 · May 30, 2024
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