pISSN 2234-7518
eISSN 2005-372X

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Fig. 2. Vertical linear measurements used exclusively in this study: 1, Po to palatal plane; 2, Ar to palatal plane; 3, S to palatal plane (posterior component of the maxilla); 4, Ptm to palatal plane; 5, Or to palatal plane; 6, N to palatal plane (anterior component of the maxilla).
See Figure 1 for definition of each landmark.
Korean J Orthod 2021;51:15~22 https://doi.org/10.4041/kjod.2021.51.1.15
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