Patent ID: 11883258
Assignee: DENTAL MONITORING
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A

Claim 0:
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.