Fig. 1. Cephalometric analysis. A, Linear measurements. N-S, Anterior cranial base length; S-Ar, posterior cranial base length; ANS-PNS, maxillary length; Ar-Go, mandibular ramus height; Go-Me, mandibular corpus length; Ar-Me, total mandibular length; N-Me, anterior facial height; S-Go, posterior facial height; AO-BO, wits appraisal. B, Angular measurements. ① SNA, The relationship of the maxilla to the cranial base; ② SNB, the relationship of the mandible to the cranial base; ③ ANB, the relationship between the maxilla and the mandible; ④ SN-GoMe, mandibular plane angle; ⑤ Ar- Go-Me, gonial angle; ⑥ SN-ArGo, ramal angle; ⑦ N-S-Ar, cranial base angle. S, Sella turcica; N, nasion; Ar, articulare; ANS, anterior nasal spine; PNS, posterior nasal spine; A, point A; B, point B; AO, the point perpendicular to the occlusal plane at point A; BO, the point perpendicular to the occlusal plane at point B; Go, constructed gonion; Me, menton.
