The upper 18 ss wire was modified (Fig.12).    What is it called?

Why modified the 18 ss wire?

Jenny's answer: Modified the wire so the tooth can be pulled toward buccal. And also put composite on molar occlusal surface (good memory) so the tooth can be moved freely. We did these two steps to fix the cross bite.

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     The upper 18 ss wire was modified (Fig.12).    What is it called?

   -   It is called as an Extrusion , used for the Intrusion of the Lateral tooth. 

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Xin Wei, DDS, PhD, MS 1st edition 08/14/2014, last revision 08/16/2014