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Cephalometric angular measurements: 1, Sella-Nasion-point A angle (SNA); 2, Sella-Nasion-point B angle (SNB); 3, Point A-Nasion-point B angle (ANB); 4, Sella-Nasion to palatal plane (PP-SN); 5 Sella-Nasion to occlusal plane (Occl-SN); 6, Sella-Nasion to mandibular plane (Mp-SN); 7, Upper incisor to Sella-Nasion (SN–U1).
