The upper wire with reverse curvature is engaged with 1/4 elastic for intermaxillary retraction (Fig.8) . There is no wire bending around UL3 bracket.  The discrepancy between UL2 incisal edge and UL3 cusp tip is not as much as that on the right side.

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Xin Wei, DDS, PhD, MS 1st edition 06/17/2013, last revision 06/17/2014