Fig. 4
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13005-020-00227-1/MediaObjects/13005_2020_227_Fig4_HTML.png)
The treatment progress during comprehensive orthodontic treatment. a The pre-treatment cephalometric tracing superimposed on an average profilogram b A schematic illustration of the comprehensive orthodontic treatment. c At the initiation of leveling. d At the initiation of simultaneous mandibular molar mesialization and maxillary canine retraction. e At the start of maxillary incisors retraction