CPC A61C 7/08 (2013.01) [A61C 7/002 (2013.01)] | 18 Claims |
1. A method of evaluation, by computer, at an “updated time”, of the conformity of an orthodontic aligner to a dental arch of a patient on which said aligner bears, referred to as the “support arch”, said aligner having an interior surface and an exterior surface, said method including the following successive steps:
A) producing a digital three-dimensional model of the support arch, in its configuration at the updated time, or an “updated reference model”, and determining, in the updated reference model, a support surface of the aligner, the support surface being a surface of the updated reference model that partially or completely models the surface of the support arch on which the aligner bears in the surface position;
B) deforming the support surface, as a function of the thickness of material between the interior surface of the aligner and the exterior surface of the aligner to obtain a deformed support surface;
C) comparing an exterior surface of the aligner with said deformed support surface in such a manner as to evaluate the difference between the exterior surface of the aligner and said deformed support surface, followed by determining, as a function of said difference, at least one score of conformity of the aligner to the support arch, the aligner including an interior surface opposite the exterior surface.
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