## 3 Result
### Skeletal Changes
\begin{table}
\begin{tabular}{c c c c c c c c c c c c c c c} \hline \hline  & \multicolumn{2}{c}{T0} & \multicolumn{2}{c}{T1} & \multicolumn{2}{c}{T2} & \multicolumn{2}{c}{T1-T0} & \multicolumn{2}{c}{T2-T1} & \multicolumn{2}{c}{T2-T0} \\ \cline{2-13} \cline{13-13}  & **Mean** & **SD** & **Mean** & **SD** & **Mean** & **SD** & **Mean** & **SD** & **Sign** & **Mean** & **SD** & **Sig** & **Mean** & **SD** & **Sig** \\ \hline \multicolumn{13}{c}{**Skeletal**} \\ SNA(c) & 80.20 & 2.88 & 80.47 & 2.80 & 80.32 & 3.26 & 0.27 & 0.68 & \(-\)0.14 & 1.30 & 0.12 & 1.64 & \\ SNB(c) & 76.81 & 3.48 & 76.91 & 3.67 & 76.89 & 3.53 & 0.09 & 0.63 & \(-\)0.02 & 1.12 & 0.08 & 1.28 & \\ ANB(c) & 3.39 & 2.67 & 3.56 & 2.68 & 3.43 & 2.63 & 0.17 & 0.64 & \(-\)0.13 & 0.59 & 0.04 & 0.82 & \\ SN-OP(c) & 20.94 & 4.88 & 21.38 & 5.82 & 21.07 & 5.36 & 0.44 & 2.56 & \(-\)0.31 & 1.66 & 0.13 & 2.99 & \\ SN-MP(c) & 37.73 & 6.61 & 37.34 & 6.48 & 37.87 & 6.56 & \(-\)0.38 & 0.91 & 0.53 & 2.01 & 0.14 & 2.34 & \\ PTV-A(mm) & 51.96 & 2.31 & 52.78 & 2.71 & 52.69 & 3.45 & 0.82 & 2.45 & \(-\)0.08 & 1.70 & 0.73 & 2.76 & \\ PTV-B(mm) & 52.50 & 6.98 & 52.15 & 7.08 & 52.03 & 7.52 & \(-\)0.35 & 2.03 & \({}^{\star}\) & \(-\)0.12 & 2.34 & \(-\)0.47 & 3.73 & \\ ANS-Metmm) & 74.63 & 6.65 & 74.57 & 5.80 & 75.52 & 5.81 & \(-\)0.06 & 2.00 & 0.95 & 1.91 & 0.89 & 2.75 & \\ Facial Height & \multicolumn{2}{c}{} & Ratio(\%) & 63.26 & 5.17 & 63.52 & 5.21 & 63.09 & 5.42 & 0.26 & 0.93 & \(-\)0.43 & 2.19 & \(-\)0.17 & 2.31 \\ \hline \multicolumn{13}{c}{**Dental linear (mm)**} \\ \hline
**U1t-PTV** & 63.13 & 4.17 & 60.45 & 4.44 & 60.88 & 4.79 & \(-\)2.68 & 2.19 & *** & 0.43 & 1.15 & \(-\)2.25 & 2.46 & *** \\
**U1t-PTV** & 49.61 & 4.31 & 48.53 & 3.84 & 48.38 & 3.88 & \(-\)1.09 & 2.11 & * & \(-\)0.15 & 1.33 & \(-\)1.23 & 3.07 & * \\
**U6r-PTV** & 28.39 & 4.16 & 25.93 & 4.11 & 26.45 & 3.87 & \(-\)2.46 & 1.97 & *** & 0.52 & 0.99 & * & \(-\)1.94 & 1.72 & *** \\
**U6r-PTV** & 27.98 & 2.84 & 26.35 & 3.33 & 26.80 & 2.78 & \(-\)1.63 & 2.14 & ** & 0.45 & 0.79 & & \(-\)1.18 & 1.75 & ** \\
**U7t-PTV** & 17.55 & 4.27 & 14.95 & 4.34 & 15.60 & 3.91 & \(-\)2.60 & 2.52 & *** & 0.65 & 0.92 & * & \(-\)1.95 & 2.05 & ** \\
**U7t-PTV** & 18.26 & 2.78 & 15.82 & 2.89 & 16.40 & 2.51 & \(-\)2.44 & 2.34 & *** & 0.58 & 1.03 & * & \(-\)1.86 & 2.09 & *** \\
**U1t-PT** & 33.03 & 3.18 & 32.74 & 3.04 & 33.00 & 13.07 & \(-\)0.28 & 1.40 & 0.26 & 2.57 & & \(-\)0.03 & 1.97 & \\
**U1r-PT** & 11.52 & 3.43 & 10.91 & 2.76 & 11.07 & 2.99 & \(-\)0.61 & 2.45 & & 0.16 & 0.76 & & \(-\)0.45 & 1.24 & \\
**U6r-PTP** & 25.03 & 2.02 & 24.11 & 2.35 & 24.46 & 2.54 & \(-\)0.92 & 1.16 & ** & 0.35 & 0.55 & \(-\)0.57 & 1.51 & ** \\
**U6r-PTP** & 7.81 & 1.62 & 6.45 & 2.02 & 6.86 & 2.29 & \(-\)1.36 & 1.52 & *** & 0.41 & 0.47 & \(-\)0.95 & 1.76 & ** \\
**U7t-PT** & 22.14 & 2.22 & 21.25 & 2.54 & 21.63 & 2.87 & \(-\)0.89 & 1.17 & ** & 0.38 & 0.89 & \(-\)0.51 & 1.76 & * \\
**U7r-PP** & 5.39 & 1.69 & 4.04 & 1.93 & 4.48 & 2.08 & \(-\)1.35 & 1.39 & *** & 0.44 & 0.62 & \(-\)0.91 & 1.49 & * \\ \hline \multicolumn{13}{c}{**Dental angular(c)**} \\ \hline
**U1 to SN** & 105.56 & 6.24 & 101.70 & 6.91 & 102.79 & 7.57 & \(-\)3.86 & 4.28 & *** & 1.08 & 3.55 & \(-\)2.77 & 4.11 & ** \\
**U6 to SN** & 72.59 & 5.72 & 69.94 & 5.74 & 71.55 & 6.05 & \(-\)2.66 & 3.97 & ** & 0.71 & 2.44 & * & \(-\)1.04 & 3.68 & * \\
**U7 to SN** & 68.81 & 7.58 & 68.32 & 6.16 & 68.78 & 6.66 & \(-\)0.50 & 5.42 & & 0.46 & 2.02 & * & \(-\)0.04 & 5.68 & \\ \hline \multicolumn{13}{c}{**Soft tissue (mm)**} \\ \hline
**Upper Lip E-plane** & 0.80 & 1.85 & \(-\)0.10 & 1.85 & 0.06 & 1.58 & \(-\)0.89 & 1.19 & *** & 0.16 & 0.89 & \(-\)0.73 & 1.12 & *** \\
**Lower Lip E-plane** & 2.17 & 2.18 & 1.32 & 2.07 & 1.28 & 1.92 & \(-\)0.85 & 2.08 & * & 0.04 & 1.07 & \(-\)0.81 & 1.82 & * \\ \hline \multicolumn{13}{c}{T0, pretreatment; T1, post-treatment; T2, postretention; SD, standard deviation; Sig, significance. * \(p<0.05\); ** \(p<0.01\); *** \(p<0.001\).} \\ \end{tabular}
\end{table}