CPC A61C 9/0053 (2013.01) [A61B 1/000096 (2022.02); A61B 1/00194 (2022.02); A61B 1/0605 (2022.02); A61B 1/24 (2013.01); A61B 5/0088 (2013.01); A61C 9/006 (2013.01)] | 15 Claims |
1. A method for generating a three-dimensional digital model of a dental arch of a patient, by means of an acquisition device comprising:
a support;
a dental retractor fixed to the support and defining a retractor aperture;
an updated image acquisition unit fixed to the support in a position in which it observes the retractor aperture along an optical axis;
a projector suitable for projecting a light beam toward the retractor aperture, so as to draw, when the retractor is worn by the patient, at least one light mark on the arch of the patient, and
a processing module,
said method comprising the following steps:
A) projection, by means of the projector, of at least one light beam onto the arch, so as to draw at least one light mark on the arch;
B) simultaneously with the step A), displacement of the arch across the light beam and acquisition, during said displacement, of a series of said updated images of said arch each showing a representation of the projected light mark, or “updated projection”;
C) identification, by the processing module, of said updated projection on each updated image, then production, by the processing module, of a three-dimensional digital model, called “updated model”, exhibiting a best fit with all the updated projections, the updated model being sought by means of an optimization method and/or a deep learning device.
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