pISSN 2234-7518
eISSN 2005-372X

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Fig. 2. Horizontal planes associated with the cranium (a, Broadbent’s plane = sella–nasion plane; b, optical axis plane). Rt, Right; Lt, left; MidON, mid optic nerve.
Korean J Orthod 2020;50:258~267 https://doi.org/10.4041/kjod.2020.50.4.258
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