Systems and methods for fabricating a dental template

Patent metadata

Field	Value
Publication number	US-9433479-B2
Application number	US-201514931681-A
Country	US
Kind code	B2
Filing date	Nov 3, 2015
Priority date	Feb 26, 2003
Publication date	Sep 6, 2016
Grant date	Sep 6, 2016

Abstract

A dental template to position an object on a patient's tooth includes digitizing the patient's tooth; adding virtual objects to predetermined locations on the digitized tooth; and fabricating the dental template to locate the object on the patient's tooth. The template can be used for etching or for positioning brackets on teeth.

First claim

What is claimed is:

1. A system for fabricating a template for positioning orthodontic objects on a patient's teeth, the system comprising:
one or more processors; and
memory comprising program code that, when executed by the one or more processors, cause the system to:
receive a digital teeth model representing a patient's teeth;
display one or more virtual orthodontic objects placed at respective locations and orientations on the digital teeth model;
determine a geometry for a template adapted for placement over the patient's teeth and comprising one or more openings defining one or more object support edges, wherein the one or more object support edges are shaped to receive and position one or more orthodontic objects at respective locations and orientations on the patient's teeth corresponding to the respective locations and orientations of the one or more virtual orthodontic objects on the digital teeth model, and wherein the one or more openings each comprise a cut-out open to a gingival side of the template; and
output fabrication data for fabricating the template having the determined geometry.

2. The system of claim 1 , wherein the fabrication data is configured for direct fabrication of the template using a rapid prototyping method.

3. The system of claim 2 , wherein the rapid prototyping method comprises fused deposition modeling, 3D printing, or stereolithography.

4. The system of claim 1 , wherein the fabrication data is configured for indirect fabrication of the template using thermoforming over a mold.

5. The system of claim 1 , wherein the one or more orthodontic objects comprise one or more fixed orthodontic appliances to be placed on the patient's teeth.

6. The system of claim 1 , wherein the one or more openings are each shaped to receive an orthodontic object base.

7. The system of claim 1 , wherein the template comprises a plurality of teeth receiving cavities shaped based on the digital teeth model.

8. The system of claim 1 , wherein the template comprises a plurality of movable template segments linked together.

9. The system of claim 1 , further comprising the template fabricated with the determined geometry.

10. A method for fabricating a template for positioning orthodontic objects on a patient's teeth, the method comprising:
receiving, with aid of a processor, a digital teeth model representing a patient's teeth;
displaying, with aid of the processor, one or more virtual orthodontic objects placed at respective locations and orientations on the digital teeth model;
determining, with aid of the processor, a geometry for a template adapted for placement over the patient's teeth and comprising one or more openings defining one or more object support edges, wherein the one or more object support edges are shaped to receive and position one or more orthodontic objects at respective locations and orientations on the patient's teeth corresponding to the respective locations and orientations of the one or more virtual orthodontic objects on the digital teeth model, and wherein the one or more openings each comprise a cut-out open to a gingival side of the template; and
outputting, with aid of the processor, fabrication data for fabricating the template having the determined geometry.

11. The method of claim 10 , wherein the fabrication data is configured for direct fabrication of the template using a rapid prototyping method.

12. The method of claim 11 , wherein the rapid prototyping method comprises fused deposition modeling, 3D printing, or stereolithography.

13. The method of claim 10 , wherein the fabrication data is configured for indirect fabrication of the template using thermoforming over a mold.

14. The method of claim 10 , wherein the one or more orthodontic objects comprise one or more fixed orthodontic appliances to be placed on the patient's teeth.

15. The method of claim 10 , wherein the one or more openings are each shaped to receive an orthodontic object base.

16. The method of claim 10 , wherein the template comprises a plurality of teeth receiving cavities shaped based on the digital teeth model.

17. The method of claim 10 , wherein the template comprises a plurality of movable template segments linked together.

Assignees

• Align Technology Inc

Inventors

• Phan Loc X
• Knopp Peter G
• Kuo Eric E
• Abolfathi Amir
• Wen Huafeng

Classifications

• A61C13/0004

  Computer-assisted sizing or machining of dental prostheses · CPC title

• A61C7/002

  Orthodontic computer assisted systems · CPC title

• A61C7/146 Primary

  Positioning or placement of brackets; Tools therefor · CPC title

• B29C64/135

  the energy source being concentrated, e.g. scanning lasers or focused light sources · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title