Since the UR 3 has drifted distally enough (4.5 months post bracketing, 16x16 ss wires just changed to), no distal retraction is necessary.

Once the UL 3 is distalized, U1,2s will be retracted together using a posted wire.  When the normal anterior overjet is achieved, U1-3s will be used an anchorage (figure-8 thin wire) to retract U5 mesially.  Last U1-3,5s will be an anchorage for U6 mesialization.  Inter-arch retraction may be necessary and supplementary (between U3 and L3).

2 Bi Extraction Ortho

Xin Wei, DDS, PhD, MS 1st edition 07/29/2015, last revision 07/29/2015