Reduced registration bonding template

Patent metadata

Field	Value
Publication number	US-11317990-B2
Application number	US-201916582052-A
Country	US
Kind code	B2
Filing date	Sep 25, 2019
Priority date	Dec 18, 2008
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

A dental template for positioning an object on teeth of a patient and method for fabricating the same. The method includes creating a digital model of the patient's teeth, creating a simplified template model based on the digital model, and fabricating the dental template based on the simplified template model. The template model is simplified by removing certain features of the patient's tooth anatomy. The dental template can be located on a patient's teeth using four or fewer positioning teeth.

First claim

What is claimed is:

1. A system for positioning an object on teeth of a patient, the system comprising:
one or more processors; and
memory, including instructions executable by the one or more processors to cause the system to at least:
receive a digital model of an arch of a patient comprising a first subset of teeth and a second subset of teeth;
create a digital model of a polymeric shell shaped to fit over a portion of the arch of the teeth of the patient, the polymeric shell comprising a first portion shaped to receive the first subset of the teeth of the arch and a second portion shaped to receive the second subset of the teeth of the arch, the first portion and second portions comprising one or more tooth receiving cavities having occlusal or incisal geometries corresponding to occlusal or incisal tooth geometries of the first subset of the teeth;
modify the second portion of the digital model to form a planar occlusion portion spanning the second subset of the teeth, the planar occlusion portion having a continuous planar geometry comprising a reduced number of occlusal features relative to a number of occlusal features of the second subset of the teeth; and
output the digital model of the polymeric shell for direct or indirect fabrication based on the modification.

2. The system of claim 1 , wherein the first subset of the teeth includes no more than four of the teeth and the one or more tooth receiving cavities of the first portion of the polymeric shell have occlusal geometries that correspond to occlusal surfaces of corresponding teeth of the patient.

3. The system of claim 2 , wherein the no more than four of the teeth comprise at least one central incisor and two mirror-image molars.

4. The system of claim 1 , further comprising a plurality of bracket models positioned on the digital model of the arch of the patient.

5. The system of claim 1 , wherein the digital model of the polymeric shell is configured to control placement of the object on the teeth of the patient.

6. The system of claim 1 , wherein the polymeric shell further comprises one or more openings shaped to control placement of one or more objects on the teeth of the patient.

7. The system of claim 6 , wherein the one or more objects comprise at least one bracket.

8. The system of claim 6 , wherein the one or more openings are shaped to locate each of the one or more objects at a predetermined inclination or predetermined angulation on the teeth of the patient.

9. The system of claim 1 , wherein the first portion reproduces at least one occlusal feature of the first subset of the teeth.

10. The system of claim 1 , wherein the digital model of the polymeric shell is for direct fabrication for use in fused deposition modeling, 3-D printing, or stereolithography.

11. The system of claim 1 , wherein the polymeric shell comprises a multi-layer system comprising layers having varying physical properties.

12. One or more non-transitory computer-readable storage media having stored thereon executable instructions that, when executed by one or more processors of a computer system for positioning an object on teeth of a patient, cause the computer system to at least:
receive a digital model of an arch of a patient comprising a first subset of teeth and a second subset of teeth;
create a digital model of a polymeric shell shaped to fit over a portion of the arch of the teeth of the patient, the polymeric shell comprising a first portion shaped to receive the first subset of the teeth of the arch and a second portion shaped to receive the second subset of the teeth of the arch, the first portion and second portions comprising one or more tooth receiving cavities having occlusal or incisal geometries corresponding to occlusal or incisal tooth geometries of the first subset of the teeth;
modify the second portion of the digital model to form a planar occlusion portion spanning the second subset of the teeth, the planar occlusion portion having a continuous planar geometry comprising a reduced number of occlusal features relative to a number of occlusal features of the second subset of the teeth; and
output the digital model of the polymeric shell for direct or indirect fabrication based on the modification.

13. The one or more non-transitory computer-readable storage media of claim 12 , wherein the first subset of the teeth includes no more than four of the teeth and the one or more tooth receiving cavities of the first portion of the polymeric shell have occlusal geometries that correspond to occlusal surfaces of corresponding teeth of the patient.

14. The one or more non-transitory computer-readable storage media of claim 13 , wherein the no more than four of the teeth comprise at least one central incisor and two mirror-image molars.

15. The one or more non-transitory computer-readable storage media of claim 12 , further comprising a plurality of bracket models positioned on the digital model of the arch of the patient.

16. The one or more non-transitory computer-readable storage media of claim 12 , wherein the digital model of a polymeric shell is configured to control placement of the object on the teeth of the patient.

17. The one or more non-transitory computer-readable storage media of claim 12 , wherein the polymeric shell further comprises one or more openings shaped to control placement of one or more objects on the teeth of the patient.

18. The one or more non-transitory computer-readable storage media of claim 17 , wherein the one or more objects comprise at least one bracket.

19. The one or more non-transitory computer-readable storage media of claim 17 , wherein the one or more openings are shaped to locate each of the one or more objects at a predetermined inclination or predetermined angulation on the teeth of the patient.

20. The one or more non-transitory computer-readable storage media of claim 12 , wherein the first portion reproduces at least one occlusal feature of the first subset of the teeth.

21. The one or more non-transitory computer-readable storage media of claim 12 , wherein the digital model of the polymeric shell is for direct fabrication for use in fused deposition modeling, 3-D printing, or stereolithography.

22. The one or more non-transitory computer-readable storage media of claim 12 , wherein the polymeric shell comprises a multi-layer system comprising layers having varying physical properties.

Assignees

• Align Technology Inc

Inventors

• Moss Jon
• Sribar Rok

Classifications

• A61C7/002 Primary

  Orthodontic computer assisted systems · CPC title

• A61C7/146

  Positioning or placement of brackets; Tools therefor · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title

• B33Y50/00

  Data acquisition or data processing for additive manufacturing · CPC title

• A61C7/02 Primary

  Tools for manipulating or working with an orthodontic appliance {(tools for placement of brackets A61C7/146; instruments for attaching elastic bands A61C7/306)} · CPC title