Twelve months post extraction and banding, there is anterior overjet.  A posted wire is used to retract the upper incisors for a month.  It appears that the upper midline deviates to the right (Fig.6, as compared to Fig.5 (pre-treatment)).  Closed coil spring is removed on the right in hope that the upper midline will shift to the normal by the left coil spring.  Is there a better alternative?
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Xin Wei, DDS, PhD, MS 1st edition 09/08/2018, last revision 09/09/2018