Fig. 2. Cephalometric measurements. A, Landmarks of lateral cephalometry are used in this study. B, Illustration of the L_CR-MP (representing true intrusion) and IMPA (representing labial tipping).
SN, sella-nasion plane; Me, menton; Go, gonion; SNA, sella-nasion-point A angle; SNB, sella-nasion-point B angle; ANB, point A-nasion-point B angle; MP-SN, sella-nasion plane to the mandibular plane angle; IMPA, mandibular incisor to mandibular plane angle; L1-Cres, center of resistance of lower incisor; L_CR-MP, the vertival distance between L1-Cres and MP.

© Korean J Orthod