Fig. 1From: The predictability of orthodontic tooth movements through clear aligner among first-premolar extraction patients: a multivariate analysisSuperimposition of pre- and post-models and establishment of coordinate planes. A Best-fit superimposition of actual pre- and post-treatment models based on palatal regions. B Virtual pre- and post-treatment models output from ClinCheck. C Registration of actual pre-treatment and virtual models. D Establishment of the transverse plane. E Establishment of the coronal plane; F Establishment of the midsagittal planeBack to article page