US 11,666,418 B2
Dentition control method
Philippe Salah, Paris (FR); William Ayache, Neuilly-sur-Seine (FR); Guillaume Ghyselinck, Cantin (FR); Laurent Debraux, Paris (FR); and Thomas Pellissard, Clichy (FR)
Assigned to DENTAL MONITORING, Paris (FR)
Appl. No. 16/94,245
Filed by DENTAL MONITORING, Paris (FR)
PCT Filed Apr. 21, 2017, PCT No. PCT/EP2017/059555
§ 371(c)(1), (2) Date Oct. 17, 2018,
PCT Pub. No. WO2017/182654, PCT Pub. Date Oct. 26, 2017.
Claims priority of application No. 1653595 (FR), filed on Apr. 22, 2016.
Prior Publication US 2019/0125493 A1, May 2, 2019
Int. Cl. A61C 7/08 (2006.01); A61C 7/00 (2006.01); G16H 50/70 (2018.01); G16H 30/40 (2018.01); G16H 15/00 (2018.01); G16H 50/50 (2018.01); G16H 30/20 (2018.01); G16H 50/20 (2018.01); G06T 7/254 (2017.01); A61C 9/00 (2006.01); G06T 17/00 (2006.01)
CPC A61C 7/08 (2013.01) [A61C 7/002 (2013.01); A61C 9/0053 (2013.01); G06T 7/254 (2017.01); G06T 17/00 (2013.01); G16H 15/00 (2018.01); G16H 30/20 (2018.01); G16H 30/40 (2018.01); G16H 50/20 (2018.01); G16H 50/50 (2018.01); G16H 50/70 (2018.01); G06T 2207/10028 (2013.01); G06T 2207/30036 (2013.01); G06T 2210/41 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A method for adjusting an orthodontic appliance worn by a patient, the method including the following steps:
a′) Creating a numerical three-dimensional reference model of at least a part of a patient's arch, or “initial reference model”;
b′) before or after step a′), before or after step c′), but before step d′), creating a numerical three-dimensional reference model, called “objective reference model”, corresponding to a predetermined positioning, at a time point of the treatment, of the teeth of said at least a part of said patient's arch;
c′) Acquiring at least one updated image with an image acquisition device, under actual acquisition conditions, and searching, by deformation of the initial reference model, for an updated reference model corresponding to the positioning of the teeth during the acquisition of the updated image;
d′) Determining, depending on the initial reference model and/or the objective reference model, a comparison model, the comparison model being the objective reference model or a model corresponding to an anticipated positioning of the teeth essentially for the time point of said acquisition,
e′) Comparing the updated reference model with the comparison model;
f′) creation of a replacement orthodontic appliance, by modification of the orthodontic appliance worn or by creation of a new orthodontic appliance, the replacement orthodontic appliance being configured according to the result of said comparison.