What is Going on? Part I
A 13-year-old boy has severe crowding (Fig.1-5). Four of the first bicuspids were extracted on 02/17/2014. Full mouth brackets or bands (except #18) were placed on 03/27/2014. Alignment improved 2 months later (Fig.11, 05/24/2014). What do you find in this photo? The upper 18 ss wire was modified (Fig.12), and fixed with alastiks (Fig.13,14). Why to do so? One month later (07/01/2014), local alignment also improved (Fig.15); the upper modification is confined to one tooth. Why?
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Xin Wei, DDS, PhD, MS 1st edition 08/14/2014, last revision 01/19/2018