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Composite is placed in LR6 (Fig.3 C) and LL7 for clearance. Lingual buttons are placed in the buccal surface of UR7 (<) and lingual surface of LR7 (Fig.6 ^) with 6 oz. elastic in between.
Xin Wei, DDS, PhD, MS 1st edition 02/17/2020, last revision 02/17/2020