Fig.7: Devon, 5 years old, LR6 (*) rotates, as compared to Fig.8 (LL6).
图七：Devon，五岁，右下第一恒磨牙扭转（*，与图八：左下相应牙齿对比）
Early Ortho
Xin Wei, DDS, PhD, MS 1st edition 07/16/2013, last revision 08/25/2013
