Fig. 2. Cephalometric analyses. A = the deepest anterior point in the concavity of the anterior maxilla; ANS = anterior nasal spine; B = the deepest anterior point in the concavity of the anterior mandible; Ba = basion; GN = gnathion; Go = gonion; H = hyoid bone; PM = protuberance menti; Pt = pterygoid point; S = sella; N = nasion; Me = menton; Xi = center point of the body of the mandible.