pISSN 2234-7518
eISSN 2005-372X

Table. 2.

Changes in three-dimensional coordinates of landmarks

Variable X Y Z



∆T (T1–T0) p-value ∆T (T1–T0) p-value ∆T (T1–T0) p-value
Prn −0.08 ± 0.95 0.928 1.14 ± 1.63 0.000*** 1.35 ± 0.87 0.000***
Sn −0.14 ± 0.75 0.459 0.60 ± 0.99 0.000*** 2.24 ± 1.59 0.000***
Al_r −1.22 ± 0.90 0.000*** 1.21 ± 1.20 0.000*** 2.64 ± 1.55 0.000***
Al_l 1.25 ± 1.28 0.000*** 1.07 ± 1.72 0.002** 2.82 ± 1.29 0.000***
Ac_r −1.42 ± 0.90 0.000*** 0.78 ± 1.10 0.000*** 3.67 ± 1.43 0.000***
Ac_l 1.54 ± 1.27 0.000*** 1.12 ± 1.33 0.000*** 3.32 ± 1.73 0.000***

Values are presented as mean ± standard deviation.

Paired-samples t-test were performed.

T0, Presurgery; T1, postsurgery; ΔT, amount of change after surgery (T1–T0); x-axis, left (no sign), right (minus sign); y-axis, superior (no sign), inferior (minus sign); z-axis, anterior (no sign), posterior (minus sign).

**p < 0.01, ***p < 0.001.

See Table 1 for definitions of the other landmarks.

Korean J Orthod 2020;50:249~257 https://doi.org/10.4041/kjod.2020.50.4.249
© Korean J Orthod