Four days post extraction of 4 of the 1st bicuspids, the patient returns for bracketing.  It appears easier to place molar bands post extraction than without extraction.  Spaces are larger.  Anterior open bite (Fig.1-3) is due to premature contact of the mesiobuccal cusp of UR7 and the buccal tube at LR 7.  To facilitate LR3 distalization, power chains are placed between LR3 and 6 (Fig.1 .014 niti wires), while tension in LL seems to be too high for power chains (Fig.3).
Early Retraction Next

Xin Wei, DDS, PhD, MS 1st edition 09/05/2017, last revision 09/09/2018