Dental three-dimensional data processing device and method thereof

Patent metadata

Field	Value
Publication number	US-11030741-B2
Application number	US-201716098931-A
Country	US
Kind code	B2
Filing date	May 4, 2017
Priority date	May 4, 2016
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

A dental three-dimensional data processing device, including: an input unit for receiving teeth data, and image data of a human face; a control unit for generating three-dimensional alignment data by combining and aligning the teeth data and the image data; a movement extraction unit for generating trajectory data by analyzing the movement of teeth or temporomandibular joint from the image data; and a simulation unit for simulating the movement of the teeth or the temporomandibular joint by applying the trajectory data to the alignment data.

First claim

The invention claimed is:

1. A dental three-dimensional data processing device, comprising:
an input unit for receiving teeth data, and image data of a human face;
a control unit for generating three-dimensional alignment data by combining and aligning the teeth data and the image data;
a movement extraction unit for generating trajectory data by analyzing the movement of teeth or temporomandibular joint from the image data;
a simulation unit for simulating the movement of the teeth or the temporomandibular joint by applying the trajectory data to the alignment data; and
an output unit for outputting the results of simulating so that the alignment data moves according to the trajectory data in the simulation unit,
wherein the simulation unit displays the movement trajectory of the teeth data and an interference surface on a screen, and
wherein the control unit detects the rotation shaft of the temporomandibular joint through the simulation.

2. The dental three-dimensional data processing device of claim 1 , wherein the teeth data comprises any one of scan data through a dental scanner, and facial bone data having the shape of the teeth measured through a Computed Tomography (CT) or a Magnetic Resonance Imaging (MRI).

3. The dental three-dimensional data processing device of claim 1 , wherein the image data are successive data acquired in real time.

4. The dental three-dimensional data processing device of claim 1 , further comprising a model generation unit for generating a teeth model reflecting the shape and movement of the teeth by designing the teeth based on the alignment data, the trajectory data, and the simulation result of the simulation unit.

5. The dental three-dimensional data processing device of claim 4 , further comprising a model correction unit for delivering it to the model generation unit by determining an interference factor of the teeth model generated by the model generation unit.

6. The dental three-dimensional data processing device of claim 5 , wherein the model correction unit inputs the correction data to the model generation unit by testing the teeth model according to the trajectory data to determine whether or not interference occurs.

7. The dental three-dimensional data processing device of claim 2 , wherein the control unit aligns the scan data and the image data, and determines the occlusion state accordingly.

8. The dental three-dimensional data processing device of claim 2 , wherein the control unit tracks the location and movement of the temporomandibular joint by aligning the facial bone data and the image data.

9. The dental three-dimensional data processing device claim 1 , wherein the movement extraction unit extracts a feature point by analyzing the image data with respect to the moving teeth in real time, and detects the movement of the teeth by tracking the movement of the feature point.

10. The dental three-dimensional data processing device of claim 1 , wherein the movement extraction unit detects the movement of the teeth by scanning a target attached to the teeth to analyze the movement of the target.

11. A dental three-dimensional data processing device, comprising:
an input unit for receiving teeth data, and image data of a human face;
a control unit for generating three-dimensional alignment data by combining and aligning the teeth data and the image data;
a movement extraction unit for generating trajectory data by analyzing the movement of teeth or temporomandibular joint from the image data; and
a simulation unit for simulating the movement of the teeth or the temporomandibular joint by applying the trajectory data to the alignment data,
wherein the image data are image data scanning a face where the teeth are exposed, and
wherein the control unit aligns them by matching the teeth included in the image data with the teeth data.

12. A dental three-dimensional data processing method, comprising:
receiving teeth data including at least one of scan data through a dental scanner, and facial bone data having the shape of teeth measured through a CT or a MRI;
receiving image data of a human face;
generating alignment data by combining and aligning the teeth data including at least one of the scan data and the facial bone data, and the image data;
generating trajectory data by analyzing the movement of the teeth or temporomandibular joint from the image data; and
simulating the movement of the teeth or the temporomandibular joint by applying the trajectory data to the alignment data,
wherein the image data comprises at least one of primary image data scanning a face where a human closes a mouth and is kept silent, and secondary image data scanning a face where human teeth are exposed,
wherein the generating the alignment data aligns the teeth data and the image data by matching the human teeth included in the secondary image data with the teeth data.

13. The dental three-dimensional data processing method of claim 12 , further comprising generating a teeth model reflecting the shape and movement of the teeth by designing the teeth in response to the alignment data, the trajectory data, and the simulation result.

14. The dental three-dimensional data processing method of claim 12 , wherein the receiving the image data recognizes a distance using data scanning the human face, generates facial three-dimensional data as the image data by performing color texture mapping, and extracts a Frankfurt's plane, a Camper's plane, or an occlusion reference plane.

15. The dental three-dimensional data processing method of claim 12 , wherein the generating the alignment data aligns the scan data and the image data, and determines the occlusion state accordingly.

16. The dental three-dimensional data processing method of claim 12 , wherein the generating the trajectory data tracks the movement of the teeth or the temporomandibular joint from the image data input in real time.

17. The dental three-dimensional data processing method of claim 16 , wherein the image data are data scanning a target attached to the teeth, and
wherein the generating the trajectory data detects the movement of the teeth by detecting the target from the image data.

18. The dental three-dimensional data processing method of claim 16 , wherein the generating the trajectory data extracts a feature point of the teeth from the image data, and generates the trajectory data by tracking the movement of the feature point.

19. The dental three-dimensional data processing method of claim 13 , further comprising correcting the teeth model by sensing teeth interference using the trajectory data with respect to the teeth model.

Assignees

• Medit Corp

Inventors

• Chang Minho
• Lee Soobok
• Chang Jiwoong
• Im Sungbin

Classifications

• G16H50/50 Primary

  for simulation or modelling of medical disorders · CPC title

• A61B6/00

  Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment (instruments measuring radiation intensity for application in the field of nuclear medicine, e.g. in vivo counting, G01T1/161) · CPC title

• G06T2207/10088

  Magnetic resonance imaging [MRI] · CPC title

• A61C19/045

  for recording mandibular movement, e.g. face bows · CPC title

• G06T17/00

  Three-dimensional [3D] modelling for computer graphics · CPC title