Method of evaluating an orthodontic aligner
US11109945B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2018 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Feb 1, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30036
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for evaluating the shape of an orthodontic aligner worn by a patient. Acquisition of at least one two-dimensional image of teeth of the patient as “updated image.” At least one updated image as “aligner image,” at least partially representing the aligner in a service position. At least one updated image as “dentition image,” representing the teeth. If the dentition image is different from the aligner image, conversion of the dentition image so that it represents the teeth as seen under the acquisition conditions used during the acquisition of the aligner image. Determination, for each of a plurality of teeth represented on the dentition and aligner images, of interior and exterior tooth outlines representing the outline of the free end of the tooth on the dentition and aligner images. Comparison of the interior and exterior tooth outlines, followed by determination of at least one score according to the comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.