Reduced registration bonding template

• US 8,401,686 B2
• Filed: 12/18/2008
• Issued: 03/19/2013
• Est. Priority Date: 12/18/2008
• Status: Active Grant

• Current Assignee: Align Technology Incorporated
• Original Assignee: Align Technology Incorporated
• Inventors: Moss, Jon, Sribar, Rok
• Primary Examiner(s): Ali, Mohammad
• Assistant Examiner(s): WHITTINGTON, ANTHONY T
• Application Number:
  US12/338,307
• Publication Number:
  US 20100159412A1
• Time in Patent Office: 1,552 Days
• Field of Search: 700/95, 700/98, 700/118, 433/72, 433/24
• US Class Current: 700/98
• CPC Class Codes: A61C 7/002 Orthodontic computer assisted systems
• CPC Class Codes: A61C 7/02 Tools for manipulating or working with an orthodontic appliance tools for placement of brackets A61C7/146; instruments for attaching elastic bands A61C7/306
• CPC Class Codes: A61C 7/146 Positioning or placement of brackets; Tools therefor
• CPC Class Codes: B33Y 50/00 Data acquisition or data processing for additive manufacturing
• CPC Class Codes: B33Y 80/00 Products made by additive manufacturing

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.

Claims

1. A method of fabricating a dental template configured to position an object on teeth of a patient, comprising:

creating a digital model of the teeth of the patient;

creating a template model comprising an arch having a first portion and a second portion, the first portion comprising at least one tooth receiving cavity having geometries corresponding to the shape of the patient'"'"'s tooth in the digital model, and the second portion comprising a substantially planar occlusal portion spanning multiple teeth of a patient'"'"'s arch, the substantially planar occlusal portion omitting at least one occlusal feature of each of the spanned teeth; and

fabricating the dental template using the template model.

2. The method of claim 1, wherein the template model comprises no more than four positioning teeth in the first portion, the positioning teeth having reproduced features of occlusal surfaces of corresponding positioning teeth of the patient.

3. The method of claim 2, wherein the corresponding positioning teeth of the patient include at least one central incisor and two molars.

4. The method of claim 1, wherein the template model is created using a rapid prototyping technology.

5. The method of claim 4, wherein the rapid prototyping technology is fused deposition modeling.

6. The method of claim 1, further comprising simplifying the digital model before creating the template model, wherein simplifying comprises removing certain geometry features of some of the teeth of the patient.

7. The method of claim 6, wherein simplifying comprises removing occlusal features of some of the teeth of the patient.

8. The method of claim 1, further comprising positioning the object on the template model.

9. A method of fabricating a dental template configured to position an object on a patient'"'"'s teeth, the method comprising:

creating a digital model of the teeth of the patient;

creating a template model comprising an arch having a first portion and a second portion, the first portion comprising teeth receiving cavities having geometries corresponding to the shape of the patient'"'"'s teeth in the digital model, the teeth receiving cavities configured to be positioned on the patient'"'"'s teeth using incisal or occlusal surfaces of four or fewer teeth, and the second portion comprising substantially planar occlusal portions spanning multiple teeth of a patient'"'"'s arch, the substantially planar occlusal portions omitting at least one occlusal feature of the corresponding spanned teeth; and

fabricating the dental template using the template model.

10. The method of claim 9, wherein the incisal or occlusal surfaces of the four or fewer teeth are the only incisal or occlusal surfaces on the dental template that contact incisal or occlusal surfaces of the patient'"'"'s teeth when the dental template is positioned on the patient'"'"'s teeth.

11. The method of claim 9, further comprising simplifying the digital model of the patient'"'"'s teeth by reducing digitized features of the patient'"'"'s teeth.

12. The method of claim 11, wherein reducing digitized features of the patient'"'"'s teeth comprises replacing some digitized tooth surfaces with substantially planar surfaces.

13. The method of claim 11, wherein the template model is created using rapid prototyping technology.

14. The method of claim 9, wherein the template model comprises no more than four teeth having features corresponding to features of the patient'"'"'s teeth.