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Table 2 Distribution of vertical and sagittal orthodontic tooth movement of upper and lower incisors of every patient (n = 100), measured after superimposition of the pre- and post-treatment lateral cephalograms; mean, minimum and maximum values [mm], SD = standard deviation

From: Apical root resorption during orthodontic treatment with aligners? A retrospective radiometric study

  Protrusion Retrusion Extrusion Intrusion
  Upper Lower Upper Lower Upper Lower Upper Lower
Mean 0.81 0.82 1.02 0.56 0.80 0.68 0.52 0.52
SD 1.08 1.21 1.22 1.06 1.08 1.05 0.78 0.78
Min. 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Max. 4.00 5.00 4.00 4.00 4.00 3.00 3.00 3.00