US 12,390,304 B2
Method for providing dental aligners to a subject showing a non-alignement of its dentition
Brice Savard, Boulogne-Billancourt (FR)
Assigned to ORTHOIN3D, Paris (FR)
Appl. No. 17/413,138
Filed by ORTHOIN3D, Paris (FR)
PCT Filed Dec. 13, 2019, PCT No. PCT/EP2019/085181
§ 371(c)(1), (2) Date Jun. 11, 2021,
PCT Pub. No. WO2020/120775, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 18306697 (EP), filed on Dec. 14, 2018.
Prior Publication US 2022/0061958 A1, Mar. 3, 2022
Int. Cl. A61C 7/00 (2006.01); A61C 7/08 (2006.01); B33Y 50/00 (2015.01); B33Y 80/00 (2015.01); G16H 10/60 (2018.01); G16H 30/20 (2018.01); G16H 30/40 (2018.01)
CPC A61C 7/002 (2013.01) [A61C 7/08 (2013.01); B33Y 50/00 (2014.12); B33Y 80/00 (2014.12); G16H 10/60 (2018.01); G16H 30/20 (2018.01); G16H 30/40 (2018.01)] 10 Claims
 
1. A method for providing at least one dental aligner comprising means for applying a displacement force, identical or different, on each tooth of the dentition of a patient; said method being with reference to an actual state of the dentition of the patient and in view of an improvement plan of the alignment targeted over a period of time ranging from 1 to 16 weeks, of the teeth of a subject, said method comprising:
i. providing a 2D image and/or 3D volume of the actual state of the dentition of a subject showing a non-alignment of its dentition;
ii. recovering clinical markers of the subject comprising the form and/or size of the dental root and/or the crown for each tooth of the dentition and one or more of further clinical markers of the subject selected from age, sex, dental disease, and anatomical features;
iii. producing an initial set of manufacturing parameters of the at least one aligner from:
the 2D image and/or the 3D volume of the actual state of the dentition of the subject, and its comparison with the 2D image and/or the 3D volume of a previous state of the dentition of the subject and/or with the 2D image and/or the 3D volume of a predicted state of the dentition of the subject,
the recovered clinical markers of step ii, and
information issued from a database of patients having same or similar etiology of non-alignment, same or similar 2D image and/or 3D volume in a previous state, same or similar evolution of tooth displacement or response to the improvement plan, same or similar clinical markers;
iv. building up a 3D volume of the improvement plan from the initial set of manufacturing parameters obtained from step iii, leading to a final set of manufacturing parameters of the at least one aligner for a treatment period ranging from 1 to 16 weeks, said final set of manufacturing parameters comprising:
a thickness ranging from 0.3 mm to 6 mm,
a Shore hardness ranging from more than 0 to 100 Shore units,
a surface condition selected from smooth surface, rough surface, and surface comprising dental adhesion means, and/or
a pressure zone applying a force ranging from more than 0 N·mm to 10 N·mm; and
v. directly 3D printing of the at least one aligner;
wherein the whole method is implemented during a dental visit.