Fig.3: Open bite correction is facilitated by bending reverse curve for the .018 ss wire (as opposed to Curve of Spree). When the posterior segments of the wire are inserted to the molar tubes, the anterior portion is coronal to the bracket slots.  When the anterior portion is engaged, it tends to extrude the upper anterior teeth.    

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