pISSN 2234-7518
eISSN 2005-372X

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Fig. 1. Evaluation of surgical quantities of hard tissues. N, Nasion; S, sella; A, A point; ANS, anterior nasal spina; PNS, posterior nasal spina; HRP, horizontal reference plane; VRP, vertical reference plane.
Korean J Orthod 2020;50:249~257 https://doi.org/10.4041/kjod.2020.50.4.249
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