Abstract: A personalized method for providing at least one dental aligner; the 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. The method includes the steps of: (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; (iii) producing an initial set of manufacturing parameters of the at least one aligner; (iv) building up an image of the 1-16 weeks target of improvement; and (v) directly 3D printing of the at least one personalized aligner fitting with the predicted evolution of intermediate tooth displacement for each tooth of the patient during the improvement plan.