Dental models and related methods

• US 9,375,298 B2
• Filed: 02/21/2013
• Issued: 06/28/2016
• 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
• Application Number:
  US13/773,229
• Publication Number:
  US 20130216980A1
• Time in Patent Office: 1,223 Days
• Field of Search: 433/213, 433172-176
• US Class Current: 1/1
• 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 dental model comprising:

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

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 including a shaft shaped to be inserted into the socket of the first component along an insertion direction;

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

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

2. The dental model of claim 1, comprising a plurality of the second components.

3. The dental model of claim 1, wherein the plurality of locally protruding portions comprises at least one convex protruding portion.

4. The dental model of claim 1, wherein the spring feature is integrally formed with the first component.

5. The dental model of claim 1, wherein the spring feature comprises a folded spring or a cantilever spring.

6. The dental model of claim 1, further comprising a fastener that engages the shaft to secure the shaft to the socket along the insertion direction for the at least one second component.

7. The dental model of claim 6, wherein the first component comprises a hole shaped to receive the fastener.

8. The dental model of claim 1, wherein the shaft has a substantially rectangular cross-sectional shape perpendicular to the insertion direction of the at least one second component and the socket includes a plurality of integral spring features that push the shaft into contact with the socket.

9. The dental model of claim 1, wherein the shaft has a distal protrusion that is disposed within an aperture in the first component, the distal protrusion having a distal surface that aligns with an external surface of the first component to enable observation that the at least one second component is properly positioned along the insertion direction for the at least one second component.

10. The dental model of claim 1, wherein the shaft has a bottom surface that interfaces with a surface of the socket to position the at least one second component relative to the first component along the insertion direction for the at least one second component.

11. The dental model of claim 1, wherein the shaft and the socket are configured to control orientation of the shaft around an axis of insertion of the at least one second component.

12. The dental model of claim 1, wherein the socket comprises three locally protruding portions and the spring feature pushes the shaft into contact with the three locally protruding portions.

13. The dental model of claim 1, wherein the plurality of locally protruding portions of the socket register the shaft relative to the socket laterally to the insertion direction for the at least one second component.

14. The dental model of claim 1, wherein the spring feature comprises a compliance configured to accommodate an interference fit between the first and second components.

15. The dental model of claim 1, wherein the shaft compresses the spring feature when the shaft is inserted into the socket so as to generate an interface force between the shaft and the spring feature.

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

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

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

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

20. The dental model of claim 1, wherein the first component comprises a plurality of layers.