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Table. 4.

Comparison of the treatment changes in skeletodental and airway variables between groups 1 and 2 (T1–T0)

Variable Group 1 Group 2 p-value


Mean SD p-value Mean SD p-value
Skeletodental ΔA-VRP (mm) 6.07 1.77 0.002** 1.29 0.85 0.001** 0.000***
ΔSNA (°) 2.53 1.22 0.000*** 0.54 0.75 0.330 0.000***
ΔA-N perp (mm) 2.70 1.14 0.000*** 1.04 0.92 0.874 0.000***
ΔPNS-HRP (mm) 4.52 1.79 0.000*** 2.86 1.72 0.000*** 0.030*
ΔPNS-VRP (mm) 4.76 0.82 0.000*** 1.14 0.80 0.070 0.000***
ΔSNB (°) 0.18 2.13 0.771 0.64 2.35 0.365 0.377
ΔB-N perp (mm) 1.31 2.23 0.067 1.62 2.79 0.070 0.767
ΔSN-Pog (°) 0.37 2.34 0.598 0.13 2.39 0.860 0.805
ΔPog-N perp (mm) 0.31 2.35 0.660 1.42 2.91 0.119 0.313
ΔANB (°) 3.35 2.09 0.003** 1.18 2.21 0.090 0.008**
ΔEMxL (mm) 5.97 2.81 0.000*** 2.59 1.59 0.002** 0.014*
ΔEMnL (mm) 8.80 5.62 0.000*** 8.32 5.72 0.002** 0.590
ΔPP-FH (°) −0.70 0.77 0.109 0.22 0.79 0.364 0.143
ΔMP-FH (°) −0.62 0.96 0.300 0.14 2.34 0.838 0.597
ΔLFH (°) 0.23 4.07 0.851 0.63 2.79 0.448 0.777
ΔOverjet (mm) 4.32 2.87 0.000*** 2.83 1.53 0.110 0.662
ΔU1-SN (°) 7.54 8.53 0.011* 7.44 8.16 0.009** 0.977
ΔU1-FH (°) 7.43 8.52 0.012* 7.19 8.12 0.011* 0.944
ΔL1-MP (°) −1.54 6.05 0.762 −2.74 4.49 0.215 0.155
Airway space Hyoid bone ΔH-RGN (mm) 2.71 4.94 0.038* 0.67 4.86 0.644 0.112
ΔMP-H (mm) 0.55 4.00 0.430 0.74 3.55 0.483 0.897
ΔH-PTV (mm) 1.01 6.29 0.347 2.02 3.13 0.047* 0.052
ΔH-C3Me (mm) 0.26 3.03 0.769 0.96 2.76 0.252 0.560
Tongue ΔTGL (mm) 12.80 5.22 0.000*** 3.54 5.15 0.137 0.000***
ΔTGH (mm) 2.44 3.02 0.317 2.09 3.82 0.085 0.803
ΔTd-PP (mm) 0.44 2.42 0.538 0.57 3.01 0.527 0.374
ΔTT-PTV (mm) 5.79 3.36 0.002** 2.03 2.92 0.245 0.001**
Soft palate ΔSPL (mm) 1.56 3.44 0.145 −0.85 2.10 0.192 0.051
ΔSPT (mm) 0.39 2.08 0.532 0.52 1.81 0.340 0.869
ΔSPA (°) −3.81 2.76 0.002** −2.23 3.32 0.340 0.219
Pharyngeal airway ΔSPAS (mm) 4.92 3.01 0.002** 2.25 1.19 0.000*** 0.002**
ΔMAS (mm) 3.63 2.31 0.000*** 1.86 1.76 0.004** 0.046*
ΔIAS (mm) 2.00 2.72 0.027* 0.29 3.58 0.786 0.200
ΔVAL (mm) 8.87 2.83 0.000*** 7.13 5.23 0.001** 0.326
ΔPNS-ad1 (mm) 5.96 2.29 0.000*** 4.43 1.26 0.000*** 0.056
ΔPNS-ad2 (mm) 7.41 1.73 0.000*** 4.23 1.36 0.000*** 0.000***

Group 1, A point advancement > 4 mm; Group 2, A point advancement < 2 mm; SD, standard deviation.

See Table 2 for definitions of each landmark or measurement.

*p < 0.05, **p < 0.01, **^p < 0.001.

Paired t-test was performed.

Independent t-test was performed.

Korean J Orthod 2020;50:238~248 https://doi.org/10.4041/kjod.2020.50.4.238
© Korean J Orthod