Surface mapping and generating devices and methods for surface mapping and surface generation

• US 8,026,943 B2
• Filed: 02/06/2008
• Issued: 09/27/2011
• Est. Priority Date: 11/08/2000
• Status: Expired due to Fees

• Current Assignee: Institut Straumann AG (Straumann Holding AG)
• Original Assignee: Institut Straumann AG (Straumann Holding AG)
• Inventors: Holzner, Stephan, Mehl, Albert, Gloger, Wolfram, Weber, Gerhard
• Primary Examiner(s): RAO, ANAND SHASHIKANT
• Application Number:
  US12/026,617
• Publication Number:
  US 20080131833A1
• Time in Patent Office: 1,329 Days
• Field of Search: 37524001-24029, 348/66, 348 77- 79, 348 91- 95, 348135-141
• US Class Current: 348/77
• CPC Class Codes: A61C 13/0004 Computer-assisted sizing or machining of dental prostheses
• CPC Class Codes: A61C 13/12 Tools for fastening artificial teeth; Holders, clamps, or stands for artificial teeth A61C8/0089 takes precedence
• CPC Class Codes: A61C 9/004 Means or methods for taking digitized impressions
• CPC Class Codes: A61C 9/0053 Optical means or methods, e.g. scanning the teeth by a laser or light beam
• CPC Class Codes: A61C 9/0093 Workpiece support
• CPC Class Codes: G01B 11/2518 Projection by scanning of the object

Abstract

A surface mapping and generating device which has devices for the process and/or cost optimization, in particular raw material recovery devices, an automatic control of the intensity of a used laser light, devices for carrying out a calibrating procedure by evaluating overlap errors at matching points, devices for archiving especially three-dimensional data of the jaw and/or for modeling the bite position of the upper and the lower jaws, devices for the optimized preparation of at least one dental stump for the production and placement of a dental prosthesis thereon and/or devices for taking into consideration the bite position of the upper and lower jaws. It can be provided that the devices for the process and/or cost optimization are designed to ensure that two half frames showing different positions or views are evaluated, whereby preferably a pulsed laser for exposure purposes is included and/or that an image recording device, in particular a CCD chip, is arranged so as to ensure that lines, taking into account the Scheimpflug angle, are located perpendicular to the direction of travel of a measuring table. Methods according to the present invention use such devices and function correspondingly. In addition, the invention also makes available a patient data archiving system which comprises a chip card and/or decentralized data storage systems especially for dental data.

Claims

1. A surface mapping and/or generating device characterized by devices for the process and/or cost optimisation, which comprise:

means for incorporating measured data of the jaw bones using a suitable matching software; and

means for simulating a planned treatment of the jaw using software, in which the teeth, the jaw, and the jaw bone are divided into groups of tooth and jaw sections, up to individual teeth, whereby the device is adapted to plan and simulate implants.

2. A surface mapping and/or generating device as set forth in claim 1, wherein the measured data of the jaw bones are data determined by a computed tomography.

3. A surface mapping and/or generating device as set forth in claim 1, wherein the groups and/or individual teeth can be moved and the final positions can be simulated.

4. A surface mapping and/or generating device as set forth in claim 3, wherein it can be simulated whether the space required is in fact present and/or how the patient will look after the treatment.

5. A surface mapping and/or generating device as set forth in claim 4, wherein an electronic data processing/software module is provided, that can be used for follow-up treatment, wherein images, taken over time can be displayed in the form of an interpolated film.

6. A surface mapping and/or generating method with the steps of:

using devices for the process and/or cost optimisation by incorporating measured data of the jaw bones using a suitable matching software;

simulating a planned treatment of a jaw using software, in which the teeth, the jaw, and the jaw bone are divided into groups of tooth and jaw sections, up to individual teeth, whereby implants can be planned and simulated.

7. A surface mapping and/or generating method as set forth in claim 6, wherein the measured data of the jaw bones are data determined by a computed tomography.

8. A surface mapping and/or generating method as set forth in claim 6, wherein the groups and/or individual teeth are moved and the final positions are simulated.

9. A surface mapping and/or generating method as set forth in claim 8, wherein it is simulated whether the space required is in fact present and/or how the patient will look after the treatment.

10. A surface mapping and/or generating method as set forth in claim 9, wherein an electronic data processing/software module is used for follow-up treatment.

11. A surface mapping and/or generating method as set forth in claim 10, wherein images are taken over time by scanning/mapping.

12. A surface mapping and/or generating method as set forth in claim 11, wherein the images obtained by scanning/mapping are displayed in the form of an interpolated film.

13. A surface mapping and/or generating method as set forth in claim 11, wherein the progress in the actual treatment can be compared to the planned treatment, and based on this comparison, potentially required corrections can be made.

14. A surface mapping method for generating images of teeth, comprising:

scanning, using laser light, one or more teeth, generating a series of overlapping digital images taken from differing perspectives;

integrating the series of overlapping digital images, using matching software, to form a three dimensional digital image of the one or more teeth and their relative locations;

analyzing the overlap errors produced at different points of the one or more teeth to detect variations in spatial directions;

calibrating to correct errors based on analyzed overlap; and

simulating a planned therapeutic treatment of the one or more teeth.

15. The method of claim 14, wherein two different perspectives are scanned and integrated for each of the one or more teeth.

16. The method of claim 15, wherein each of said two different perspectives are a half-frame.

17. The method of claim 14, wherein a CCD device generates scan data.

18. The method of claim 14, wherein the one or more teeth are moved during scanning

19. The method of claim 14, wherein scanning is performed at an angle of 90 degrees relative to a direction of movement of the one or more teeth.

20. The method of claim 14, wherein said step of simulating includes generating a sequence of desired relative positioning of the one or more teeth.