Fig. 3From: A retrospective cephalometric study on pharyngeal airway space changes after rapid palatal expansion and Herbst appliance with or without skeletal anchorageModified SO-Pancherz analysis. Reference points and lines: sella (S), nasion (N), subnasal (A), supramental (B), pogonion (PG), gonion (GO), menton (ME), occlusal line (OL), and occlusal line perpendicular (OLp)Back to article page