Lateral cephalometric radiograph with landmarks, lines and angles (red) serving as reference points. Landmarks are N, nasion; S, sella; A, A point (most concave point of anterior maxilla); B, B point (most concave point on mandibular symphysis); Pog, pogonion (most anterior point of mandibulae symphysis); Me, menton (lowest point on mandibular symphysis); Gn, gnathion (point of intersection between the line between pogonion and menton); Gon, gonion (point of intersection between ramus plane and mandibular plane); Art, articulare (intersection between the ascending ramus and the inferior surface of the cranial base); PNS, posterior nasal spine; ANS, anterior nasal spine, lines: SNL, sella-nasion line; PNS-ANS, maxillary length; Gn-Gon, mandibular plane; gonial angle, angle formed by a line connecting gnathion to gonion to articulare, and angles: SNA (°), SNA-angle (indicates whether or not the maxilla is normal, prognathic or retrognathic); SNB (°), SNB angle (indicates whether the mandible is normal, prognathic or retrognathic); ANB (°), ANB angle (indicates whether the relationship between maxilla and mandible is regular, a skeletal class II or class III. The patient has agreed in writing to the use of the X-ray image for publication.