Fig. 1. Landmarks used in cephalometric analysis. S, sella; N, nasion; A, subspinale; B, supramentale; PNS, posterior nasal spine; U, tip of the uvula; AH, the most anterior and superior point of hyoid bone; Go, gonion; Me, menton; C3, the anterior border of the third vertebra; Ba, basion; V, vallecular.
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