Dental models and related methods

• US 10,299,899 B2
• Filed: 05/16/2016
• Issued: 05/28/2019
• Est. Priority Date: 02/21/2012
• Status: Active Grant

• Current Assignee: Align Technology Incorporated
• Original Assignee: Align Technology Incorporated
• Inventors: Boronkay, Allen R., Kopelman, Avi, Kaza, Srinivas
• Primary Examiner(s): Patel, Yogesh P
• Application Number:
  US15/155,995
• Publication Number:
  US 20160256248A1
• Time in Patent Office: 1,107 Days
• Field of Search: 433 74, 433213, 433172-176
• CPC Class Codes: A61C 13/0003 Making bridge-work, inlays, implants or the like
• CPC Class Codes: A61C 13/0013 using stereolithographic techniques
• CPC Class Codes: A61C 13/0019 using three dimensional printing
• CPC Class Codes: A61C 13/1009 Anchorage members, e.g. pins or bars; Means or methods for affixing pins to porcelain teeth
• CPC Class Codes: A61C 13/34 Making or working of models, e.g. preliminary castings, trial dentures; Dowel pins [4]
• CPC Class Codes: A61C 8/00 Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools fastening of peg-teeth in the mouth A61C13/30
• CPC Class Codes: A61C 9/002 Means or methods for correctly replacing a dental model, e.g. dowel pins; Dowel pin positioning means or methods
• CPC Class Codes: B33Y 10/00 Processes of additive manufacturing
• CPC Class Codes: B33Y 80/00 Products made by additive manufacturing

Abstract

A dental model and related systems and methods, including a first component representing a portion of a patient'"'"'s jaw and a second component that is demountably attachable to the first component, and a second component representing a dental structure of interest, such as the remaining portion of a tooth or a dental implant.

Claims

1. A method of fabricating a dental model, the method comprising:

fabricating a first component configured to represent a portion of a patient'"'"'s jaw and defining at least one socket;

fabricating at least one second component that is demountably attachable to the first component and configured to represent at least one dental structure in the portion of the patient'"'"'s jaw, the at least one second component comprising a shaft shaped to be inserted into the at least one socket of the first component;

fabricating a plurality of locally protruding portions located in the socket, and extending laterally to the insertion direction of the shaft so as to form an interface between the first and second components; and

fabricating a spring feature positioned in the socket so as to push the shaft against the plurality of locally protruding portions.

2. The method of claim 1, wherein one or more of the first component or the at least one second component are fabricated using an additive manufacturing technique.

3. The method of claim 2, wherein the additive manufacturing technique comprises stereolithography or 3D printing.

4. The method of claim 1, wherein one or more of the first component or the at least one second component are fabricated using a milling technique.

5. The method of claim 1, wherein the plurality of locally protruding portions are configured to produce an interference fit between the first component and the at least one second component when the shaft is inserted into the at least one socket.

6. The method of claim 1, wherein the plurality of locally protruding portions are located in the at least one socket.

7. The method of claim 1, where the plurality of locally protruding portions are located on the shaft.

8. The method of claim 7, wherein the plurality of locally protruding portions are configured to compress when the shaft is inserted into the at least one socket so as to produce an interference fit between the first component and the at least one second component.

9. The method of claim 1, further comprising fabricating a projection at a bottom portion of the shaft, wherein the projection is arranged to extend through a hole in a bottom surface of the first component when the shaft is inserted into the at least one socket, and wherein an end surface of the projection is positioned flush with the bottom surface of the first component when the shaft is fully inserted into the at least one socket.

10. The method of claim 1, wherein the spring feature comprises a compliance configured to accommodate the interference between the first and the at least one second component.

11. The method of claim 1, wherein the plurality of locally protruding portions are positioned to contact two different faces of the shaft.

12. The method of claim 1, further comprising fabricating a second spring feature positioned in the socket so as to push the shaft against the plurality of locally protruding portions.

13. The method of claim 1, wherein the at least one second component represents a portion of a tooth or a dental implant.

14. The method of claim 1, wherein the first component represents a portion of the patient'"'"'s jaw near a crown, bridge, or implant to be prepared.

15. The method of claim 1, wherein the first component comprises a plurality of layers.