Dentition occlusion mapping using elastic foam modeling

Patent metadata

Field	Value
Publication number	US-9820835-B2
Application number	US-201615376716-A
Country	US
Kind code	B2
Filing date	Dec 13, 2016
Priority date	Mar 8, 2013
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

A method for generating a mapping of dental occlusion generates a three-dimensional model of the patient's teeth according to acquired image data. The maxillary and mandibular arches are positioned in opposition in the generated model of the patient's teeth and a meal model generated having characteristics of a foam material. A pressure field distribution for the generated meal model is calculated for one or more pairs of opposed teeth from the generated three-dimensional model of the patient's teeth. The calculated pressure field distribution can be displayed.

First claim

The invention claimed is:

1. A method for generating a mapping of dental occlusion, the method comprising:
generating a three-dimensional data model of a plurality of teeth of dentition according to acquired image data;
positioning at least respective portions of maxillary and mandibular arches in opposition in the generated data model of the plurality of teeth;
generating a data model having characteristics of a compressible foam material including predetermined elastic characteristics;
calculating a pressure field distribution for the generated data model for one or more pairs of opposed teeth from the generated three-dimensional data model of the plurality of teeth; and
storing at least a portion of the calculated pressure field distribution.

2. The method of claim 1 wherein calculating the pressure field distribution comprises combining modeled information from occlusion at multiple surfaces.

3. The method of claim 1 wherein the pressure field distribution is a Gaussian or a Lorentzian distribution.

4. The method of claim 1 wherein the data model comprises values for one or more of density, compression, tensile strength, and cell size.

5. The method of claim 1 wherein the pressure field distribution is calculated as a function of the elastic Young modulus and the Poisson coefficient.

6. The method of claim 1 wherein displaying the calculated pressure field distribution comprises displaying different value ranges in different colors.

7. The method of claim 1 further comprising displaying the calculated pressure field distribution by displaying the distribution overlaid on an image of the maxillary or mandibular arch.

8. The method of claim 1 further comprising repositioning the maxillary and mandibular arches in opposition in the data model of the plurality of teeth and repeating steps of generating the data model, calculating the pressure field distribution, and displaying the calculated distribution.

9. The method of claim 1 wherein obtaining digital image data further comprises forming one or more casts or impressions from the mouth of the patient and scanning the one or more casts or impressions using x-rays.

10. The method of claim 1 wherein obtaining digital image data further comprises scanning the mouth of the patient using an intra-oral scanner.

11. The method of claim 1 further comprising displaying at least the calculated pressure field distribution by displaying a grayscale image.

12. The method of claim 1 wherein calculating the pressure field distribution comprises generating a three-dimensional pressure field relative to a block of material.

13. The method of claim 12 wherein generating the three-dimensional pressure field further comprises averaging the pressure along a predetermined direction.

14. The method of claim 12 wherein generating the three-dimensional pressure field further comprises identifying the pressure along a plane relative to the tooth surface.

15. A method for generating a mapping of dental occlusion of a patient's teeth, the method comprising:
generating a three-dimensional data model of a subject's teeth;
positioning maxillary and mandibular arches in opposition in the generated data model of the subject's teeth;
calculating one or more distances between occlusal surfaces of opposed teeth according to the maxillary and mandibular arch positioning;
generating a data model having characteristics of a foam material;
calculating a pressure field distribution for the generated data model for one or more pairs of opposed teeth according to the generated data model of the subject's teeth and according to the one or more calculated distances between occlusal surfaces; and
transmitting at least the calculated pressure field distribution for one or more of the teeth.

16. The method of claim 15 wherein the calculated pressure field is calculated using one or more axially symmetric functions.

17. The method of claim 15 wherein generating a three-dimensional model of the subject's teeth further comprises obtaining one or more casts or impressions of the patient's maxillary and mandibular arches and scanning the one or more casts or impressions using x-rays.

18. A method for generating a mapping of dental occlusion, the method comprising:
generating a three-dimensional data model of a patient's teeth using one or more casts or impressions of the patient's maxillary and mandibular arches and using digital image data from the one or more casts or impressions;
positioning the maxillary and mandibular arches in opposition in the generated data model of the patient's teeth;
calculating one or more distances between occlusal surfaces of opposed teeth according to the maxillary and mandibular arch positioning;
generating a data model having characteristics of a foam material;
calculating a pressure field distribution for the generated data model for one or more pairs of opposed teeth according to the generated data model of the patient's teeth and according to the one or more calculated distances between occlusal surfaces; and
displaying, transmitting or storing at least a portion of the calculated pressure field distribution.

Assignees

• Trophy

Inventors

• Inglese Jean-Marc
• Capron-Richard Sabrina
• Barneoud Julien D
• Millet Frederic
• Etesse Ronan

Classifications

• A61C7/002

  Orthodontic computer assisted systems · CPC title

• A61C9/004

  Means or methods for taking digitized impressions · CPC title

• A61B6/14

  Human Necessities · mapped topic

• A61C19/05 Primary

  for determining occlusion · CPC title

• A61C13/34

  Making or working of models, e.g. preliminary castings, trial dentures; Dowel pins [4] · CPC title