PRODUCTION OF INDIVIDUAL DENTAL PROSTHESES VIA CAD/CAM AND RAPID MANUFACTURING / RAPID PROTOTYPING BASED ON DATA OF THE SITUATION IN THE MOUTH OBTAINED BY DIGITAL MEANS

• US 20130326878A1
• Filed: 06/11/2013
• Published: 12/12/2013
• Est. Priority Date: 06/11/2012
• Status: Abandoned Application

• Current Assignee: Heraeus Kulzer GmbH (Mitsui Chemicals)
• Original Assignee: Heraeus Kulzer GmbH (Mitsui Chemicals)
• Inventors: RUPPERT, Klaus, BOEHM, Uwe, BEYER, Mario
• Application Number:
  US13/914,748
• Publication Number:
  US 20130326878A1
• Time in Patent Office: Days
• US Class Current: 29/896.1
• CPC Class Codes: A61C 13/0004 Computer-assisted sizing or machining of dental prostheses
• CPC Class Codes: A61C 13/0006 Production methods
• CPC Class Codes: A61C 13/0013 using stereolithographic techniques
• CPC Class Codes: A61C 13/0018 using laser
• 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
• CPC Class Codes: G16H 20/40 relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
• CPC Class Codes: Y10T 29/49567 Dental appliance making

Abstract

Summary

Methods for the production of complete or partial prostheses involve, firstly A) provision of 3D data of the situation in the mouth in the edentulate or partly toothed state; B) digital designing of the denture base for lower and upper jaw each; C) digital positioning of virtual teeth with appropriate occlusion and a tooth shape selected according to aesthetic criteria, in the case of complete prostheses, D1) production of the dental arch using an automated method from the groups of layer-building and of material-removing methods; and D2) production of the denture base using an automated method from the groups of layer-building and of material-removing methods; and, in the case of partial prostheses; D1) production of the dental arch using an automated method from the groups of layer-building and of material-removing methods; and D2) production of the support structures or fastening elements using an automated method from the groups of layer-building and of material-removing methods.

Claims

1. Method for the production of a complete prosthesis comprising

A) provision of 3D data of the situation in the mouth in the edentulate state;

B) digital designing of the denture base for lower and upper jaw each;

C) digital positioning of virtual teeth with appropriate occlusion and a tooth shape selected according to aesthetic criteria;

D1) production of the dental arch using an automated method from the groups of layer-building and of material-removing methods;

D2) production of the denture base using an automated method from the groups of layer-building and of material-removing methods.

3. Method according to claim 1, comprising

D1) production of the dental arch using any one of the methods, SLA, inkjet printing, FDM, and CAD/CAM cutting, each from Material-2 that is suitable for the respective method.

D2) production of the denture base using any one of the methods, SLA, inkjet printing, FDM, SLM, and CAD/CAM cutting, each from Material-1 or Material-2 that is suitable for the respective method.

5. Method according to claim 1, whereby the inside of the teeth or of the dental arch is produced using an automated method and at least a second material is then applied onto the inside of the teeth or of the dental arch as an external layer using an automated method.

6. Method according to claim 5, whereby the core is produced through cutting or SLA or inkjet printing.

7. Method according to claim 5, whereby the external layer is applied through FDM.

8. Method according to claim 5, whereby the inside of the teeth or of the dental arch is built-up through SLA or inkjet technique and at least a second material is then applied onto the inside of the teeth or of the dental arch as an external layer through FDM.

9. Method according to claim 1, whereby the joining of dental arch and denture base is implemented through mechanical elements, such as, e.g., guide splints, grooves, and suitable retention elements, or through gluing or form-fitting connection.

10. Method according to claim 1, whereby steps D1 and D2 are implemented by means of inkjet printing methods.

2. Method for the production of a partial prosthesis comprising

A) provision of 3D data of the situation in the mouth in the partially toothed state

B) digital designing of the denture base

C) digital positioning of virtual teeth with appropriate occlusion

D1) production of the dental arch using an automated method from the groups of layer-building and of material-removing methods;

D2) production of the support structures or fastening elements using an automated method from the groups of layer-building and of material-removing methods.

4. Method according to claim 2, comprising

D1) production of the dental arch using any one of the methods:

SLA, inkjet printing, FDM, and CAD/CAM cutting from a Material-1 or Material-2 that is appropriate for the respective method,

D2) production of the support structures or fastening elements using any one of the methods;

SLM or CAD/CAM cutting from a Material-1 that is appropriate for the respective method.

11. Method according to claim 2, whereby step D1 is implemented through inkjet printing and step D2 is implemented through CAD/CAM cutting.