Fig. 2From: The predictability of orthodontic tooth movements through clear aligner among first-premolar extraction patients: a multivariate analysisPoint digitization and establishment of local tooth plane to measure angles. A Establishment of buccal lingual plane of the central incisor. B Establishment of mesial–distal plane of the first molar. C Point digitization of central incisors, canines and first molars, and axis of central incisors, canines, and first molarsBack to article page