The present invention relates to the field of orthodontics. Especially, the present invention relates to a personalized method for providing at least one aligner, with reference to an actual state of the dentition of the patient and in view of a 1-16 weeks improvement plan of the alignment of the teeth of a subject, comprising:i. providing a 2D image and/or 3D volume of the dentition of a subject showing a non-alignment of its dentition；ii. recovering clinical markers of the subject, including age, sex, anatomical features；iii. producing an initial set of manufacturing parameters of the aligner from the image or the volume, from the recovered clinical markers, and from information issued from a database of patients having same or similar etiology of non-alignment, same or similar image or, same or similar clinical markers；iv. building up an image of the 1-16 weeks target of improvement； andv. 3D printing, directly or indirectly, of the at least one aligner.
