Orthodontic treatment with aligner systems is a relatively new treatment option for patients with distal occlusion. The small number of publications on the issue of improving and improving this type of treatment, as well as the lack of information about the possible amounts of movement and rotation of teeth during treatment with aligners, became the motivation for this study. A retrospective study was conducted based on the treatment protocols of 193 patients. Descriptive statistics methods were used for the selected group of patients. The real movements/rotations of the crowns and roots of teeth were assessed immediately after successful treatment by patients. The improvement and advancement of orthodontic treatment with the aligner system is that it is now possible to compare the treatment plan for that particular patient with the statistical distribution presented in this paper for exceeding the limit (third quartile) of translation or rotation. Exceeding the limit (third quartile) will signal to the attending orthodontist that the doctor should pay attention to this extreme movement/rotation and, if possible, adjust the treatment plan.