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Fig. 2. A, Facial cone-beam computed tomography. B, ANB angle = 3°, 1.NA for tooth #21 = 20°; 1.NB for tooth #31= 30°.
ANB, the angle formed by the lines Nasion to point A and Nasion to point B; 1.NA, the angle formed by the long axis of the upper incisor and the line Nasion to point A; 1.NB, the angle formed by the long axis of the lower incisor and the line Nasion to point B.
Korean J Orthod 2021;51:293~300 https://doi.org/10.4041/kjod.2021.51.4.293
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