Dental appliance etch template

• US 10,548,700 B2
• Filed: 12/16/2016
• Issued: 02/04/2020
• Est. Priority Date: 12/16/2016
• Status: Active Grant

• Current Assignee: Align Technology Incorporated
• Original Assignee: Align Technology Incorporated
• Inventors: Fernie, Michael Lawrence
• Primary Examiner(s): Lewis, Ralph A
• Application Number:
  US15/382,235
• Publication Number:
  US 20180168788A1
• Time in Patent Office: 1,145 Days
• CPC Class Codes: A61C 19/003 Apparatus for curing resins by radiation
• CPC Class Codes: A61C 19/063 Medicament applicators for teeth or gums, e.g. treatment with fluorides
• 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
• CPC Class Codes: A61C 7/146 Positioning or placement of brackets; Tools therefor
• CPC Class Codes: A61C 7/16 specially adapted to be cemented to teeth

Abstract

The present disclosure provides methods, devices, and systems that utilize dental appliance etch templates prior to or during dental treatment. One dental appliance etch template includes a removable shell having one or more cavities formed therein, where the one or more cavities are shaped to receive teeth of a patient, and the shell includes a well, the well including a wafer, where the wafer includes etch material to etch a tooth of the patient.

Claims

1. An appliance comprising:

a removable shell including;

one or more cavities formed from an interior surface of the removable shell, the one or more cavities configured to receive teeth of a patient'"'"'s dentition; and

a well formed in at least one of the one or more cavities, the well having a wafer formed of an absorbent wafer material with absorbed etch material, wherein the well is arranged to position the wafer to etch an attachment location on a tooth of the patient'"'"'s dentition for an orthodontic attachment, the well having one or more walls shaped to contain excess liquid etch material from the wafer when the removable shell is positioned on the patient'"'"'s dentition.

2. The appliance of claim 1, wherein a surface of the wafer is arranged to be placed at a particular position on a tooth surface via the well such that the etch material etches the tooth surface at the particular position on the tooth surface.

3. The appliance of claim 1, wherein a location of the well is based on the attachment location on a surface of the tooth to be etched of the patient'"'"'s dentition.

4. The appliance of claim 1, wherein a shape of the well is based on a particular shape of the orthodontic attachment to be placed on a tooth surface of the patient'"'"'s dentition.

5. The appliance of claim 4, wherein a shape of the wafer is based on the shape of the well and the particular shape of the orthodontic attachment to be placed on the tooth surface of the patient'"'"'s dentition.

6. The appliance of claim 1, wherein the well is at least one of a rectangular shape and a non-rectangular shape.

7. The appliance of claim 1, wherein the wafer is at least one of a rectangular shape and a non-rectangular shape.

8. The appliance of claim 1, wherein the well is located on a facial surface of the shell.

9. The appliance of claim 1, wherein the well is located on a lingual surface of the shell.

10. The appliance of claim 1, wherein the one or more walls is shaped to keep the excess liquid etch material away from areas on the tooth other than the attachment location.

11. The appliance of claim 1, wherein the one or more walls includes a bottom surface that extends within the at least one of the one or more cavities to block the excess liquid etch material from escaping the well.

12. The appliance of claim 1, wherein the well includes a catch area for collecting the excess liquid etch material.

13. The appliance of claim 1, wherein the well includes a second absorbent material configured to adsorb the excess liquid etch material.

14. The appliance of claim 13, wherein the second absorbent material configured to adsorb the excess liquid etch material.

15. The appliance of claim 1, wherein the well includes a liner across an opening of the well, wherein the liner is removable to expose the wafer with absorbed etch material within the well.

16. An appliance comprising:

a removable shell including;

one or more cavities formed from an interior surface of the shell, the one or more cavities configured to receive teeth of a patient'"'"'s dentition; and

one or more wells, each well of the one or more wells having a corresponding wafer formed of an absorbent wafer material with absorbed etch material for etching a particular position on a surface of a tooth, each well having one or more walls shaped to contain excess liquid etch material from the wafer when the removable shell is positioned on the patient'"'"'s dentition.

17. The appliance of claim 16, wherein the one or more wells are located in adjacent cavities of the one or more cavities.

18. The appliance of claim 16, wherein the one or more wells are located in non-adjacent cavities of the one or more cavities.

19. A method of attaching an attachment to a tooth, the method comprising:

providing an etching template, the etching template including a removable shell having;

one or more cavities formed from an interior surface of the removable shell, the one or more cavities configured to receive teeth of a patient'"'"'s dentition, the etching template further including a first well formed in at least one of the one or more cavities, the first well having a wafer formed of an absorbent wafer material with absorbed etch material for etching a tooth of the patient at an attachment location of an orthodontic attachment on the tooth, the first well including one or more walls shaped to contain excess etch material from the wafer when the etching template is placed over the teeth;

placing the etching template over the teeth to etch the tooth at the attachment location;

providing an attachment template, the attachment template having a second well including a dental attachment;

placing the attachment template over the teeth to place the second well and the dental attachment over the attachment location; and

attaching, using a bonding agent, the dental attachment to the attachment location.

20. The method of claim 19, wherein the method includes applying a sealer to a surface of the tooth of the patient at the attachment location on the surface of the tooth prior to attaching the dental attachment.

21. The method of claim 19, wherein the method includes curing the bonding agent via an ultra-violet (UV) light source.

22. The method of claim 19, wherein the dental attachment includes a dental bracket.

23. A method of forming an etching template, comprising:

defining a virtual three dimensional etching template body having one or more cavities formed therein that have shapes to each receive a tooth of a plurality of teeth of a patient;

identifying a virtual position on the virtual three dimensional etching template body at which a well is to be placed based on an area that is to be etched on one of the plurality of teeth of the patient;

defining a shape and orientation of the well on the virtual three dimensional etching template body, the well configured to hold a wafer formed of an absorbent wafer material having an absorbed etching material, wherein one or more walls of the well is shaped to contain excess liquid etching material from the wafer when the etching template is positioned on the plurality of teeth of the patient; and

forming the etching template based on the virtual three dimensional etching template body.

24. The method of claim 23, further including creating a treatment plan based on a virtual model of at least one tooth of the patient, wherein the treatment plan includes use of an attachment placed at the area etched by the etching material.

25. The method of claim 24, wherein creating a treatment plan based on a virtual model includes creating multiple stages for the treatment of the patient wherein one or more attachments are used in at least one stage of the treatment plan and each stage utilizes a dental appliance in conjunction with the one or more attachments.

26. The method of claim 25, wherein the method further includes determining a position on a particular tooth for placement of each attachment and defining an area to be etched on the tooth that includes the position at which the attachment is to be placed based on the treatment plan.

27. The method of claim 23, further including defining the shape and orientation of the well on the virtual three dimensional etching template body based on the area that is to be etched on the one of the plurality of teeth of the patient and forming a physical etching template based on the virtual three dimensional etching template body having the etching material well formed thereon based on the identified virtual position and defined shape and orientation.