The lower 4s are expected to be extracted.  On the day of surgery, LR 5 is found to have been heavily restored (MO amalgam, DO composite, Fig.1 (mirror view)); the prognosis is less favorable than LR 4.  So the former is extracted (Fig.2).  On the other side, the canine area is crowded (Fig.1: 3). 

Extraction/Banding     Last     Next  Xin Wei, DDS, PhD, MS 1st edition 03/29/2015, last revision 01/02/2021