Figure 1.

Lateral cephalogram showing the landmarks used for the study. (1) Most anterior point on lower lip; (2) deepest concavity of inferior labial sulcus; (3) most anterior point of soft-tissue chin; (4) lower incisor apex; (5) deepest midline concavity of anterior symphysis; (6) most anterior point of symphysis; (7) most inferior point of symphysis; (8) most posterior point of symphysis; (9) lower first molar distal root apex; (10) superior-anterior point of hyoid bone; (11) deepest impression of mandibular corpus in front of masseter insertion; (12) most anterior point of atlas bow; (13) most posterior-superior point of dens axis; (14) inferior-anterior point of body of CV2; (15) inferior-anterior point of body of CV3