# Long-Term Stability of Class II Malocclusion Treated with Maximly Molar Distalization
## 3 Results
### Changes in Cephalometric Measurements
No significant change  
\begin{table}
\begin{tabular}{l c c c c c c c c c} \hline  & \multicolumn{2}{c}{**T2-T1**} & \multicolumn{4}{c}{**T3-T2**} & \multicolumn{2}{c}{**T3-T1**} \\  & \multicolumn{2}{c}{**Mean \(\pm\) SD**} & \(\mathbf{t}\) & \(\boldsymbol{p}\) & \multicolumn{2}{c}{**Mean \(\pm\) SD**} & \(\mathbf{t}\) & \(\boldsymbol{p}\) & \multicolumn{2}{c}{**Mean \(\pm\) SD**} & \(\mathbf{t}\) & \(\boldsymbol{p}\) \\ \hline SNA\({}^{\circ}\) & \(0.39\pm 0.87\) & 2.871 & \(0.007\)\({}^{**}\) & \(0.34\pm 0.79\) & \(2.755\) & \(0.009\)\({}^{**}\) & \(0.74\pm 1.01\) & \(4.635\) & \(0.000\)\({}^{**}\) \\
**SNB\({}^{\circ}\)** & \(0.49\pm 0.87\) & 3.547 & \(0.001\)\({}^{**}\) & \(0.36\pm 0.28\) & \(2.948\) & \(0.005\)\({}^{**}\) & \(0.85\pm 121\) & \(4.458\) & \(0.000\)\({}^{**}\) \\ ANB\({}^{\circ}\) & \(-0.09\pm 0.68\) & \(-0.860\) & \(0.395\) & \(0.00\pm 0.58\) & \(0.055\) & \(0.957\) & \(-0.09\pm 0.77\) & \(-0.718\) & \(0.477\) \\
**SN-MP\({}^{\circ}\)** & \(0.81\pm 0.90\) & 5.728 & \(0.000\)\({}^{**}\) & \(-1.12\pm 1.12\) & \(-6.340\) & \(0.000\)\({}^{**}\) & \(-0.31\pm 1.33\) & \(-1.486\) & \(0.145\) \\ SN-OP\({}^{\circ}\) & \(0.31\pm 1.03\) & 1.879 & \(0.068\) & \(-0.54\pm 0.56\) & \(-0.703\) & \(0.000\)\({}^{**}\) & \(-0.23\pm 1.01\) & \(-1.479\) & \(0.147\) \\
**U6-PP\({}^{\circ}\)** & \(1.63\pm 1.58\) & 6.521 & \(0.000\)\({}^{**}\) & \(0.42\pm 0.29\) & \(0.904\) & \(0.000\)\({}^{**}\) & \(2.06\pm 145\) & \(8.939\) & \(0.000\)\({}^{**}\) \\
**U6-PP\({}^{\circ}\)** & \(1.33\pm 0.41\) & \({}^{b}\) & \(-5.518\) & \(0.000\)\({}^{**}\) & \(0.39\pm 0.34\) & \({}^{b}\) & \(-5.483\) & \(0.000\)\({}^{**}\) & \(1.73\pm 0.60\) & \(18.071\) & \(0.000\)\({}^{**}\) \\
**U6-ANS mm** & \(1.76\pm 0.85\) & 20.361 & \(0.000\)\({}^{**}\) & \(-0.31\pm 0.13\) & \(-14.619\) & \(0.000\)\({}^{**}\) & \(1.45\pm 0.03\) & \(13.7375\) & \(0.000\)\({}^{**}\) \\ U6-X mm & \(3.04\pm 1.59\) & 12.106 & \(0.000\)\({}^{**}\) & \(1.25\pm 0.84\) & \(9.475\) & \(0.000\)\({}^{**}\) & \(4.29\pm 0.20\) & \(13.369\) & \(0.000\)\({}^{**}\) \\
**U6-Y mm** & \(0.56\pm 1.82\) & 19.699 & \(0.056\) & \(1.50\pm 10.04\) & \(0.073\) & \(0.000\)\({}^{**}\) & \(2.06\pm 225\) & \(5.801\) & \(0.000\)\({}^{**}\) \\ U1-PP\({}^{\circ}\) & \(0.87\pm 5.35\) & 1.026 & \(0.311\) & \(0.43\pm 1.90\) & \(1.422\) & \(0.163\) & \(1.30\pm 4.48\) & \(1.827\) & \(0.075\) \\
**U1-PP\({}^{\circ}\)** & \(1.38\pm 1.45\) & 6.000 & \(0.000\)\({}^{**}\) & \(0.27\pm 0.66\) & \(2.526\) & \(0.016\)\({}^{*}\) & \(1.64\pm 137\) & \(8.873\) & \(0.000\)\({}^{**}\) \\
**U1-NS mm** & \(-0.22\pm 1.75\) & \(-0.777\) & \(0.442\) & \(-0.13\pm 0.92\) & \(-0.874\) & \(0.388\) & \(-0.34\pm 1.48\) & \(-1.468\) & \(0.150\) \\
**U1-Xmm** & \(3.16\pm 2.38\) & 8.408 & \(0.000\)\({}^{**}\) & \(1.02\pm 10.03\) & \(62.78\) & \(0.000\)\({}^{**}\) & \(4.18\pm 243\) & \(10.865\) & \(0.000\)\({}^{**}\) \\
**U1-Y mm** & \(2.09\pm 2.26\) & 5.838 & \(0.000\)\({}^{**}\) & \(1.13\pm 1.51\) & \(4.703\) & \(0.000\)\({}^{**}\) & \(3.21\pm 2.65\) & \(7.650\) & \(0.000\)\({}^{**}\) \\
**Overp mm** & \(-1.09\pm 1.271\) & \(-3.951\) & \(0.000\)\({}^{**}\) & \(0.30\pm 0.02\) & \(2.573\) & \(0.014\) & \(-0.78\pm 1.43\) & \(-3.842\) & \(0.001\)\({}^{**}\) \\
**Overpite mm** & \(-0.66\pm 1.30\) & \(-3.121\) & \(0.003\)\({}^{**}\) & \(-0.05\pm 1.07\) & \(b\) &was observed in the U1-PP measurement, which shows the buccal inclination of the upper incisors, or the U1-ANS measurement, which shows the sagittal position, during the treatment period (T2-T1) and in the long term after treatment (T3-T2). The increase in the U1-X and U1-Y measurements is associated with craniofacial growth in the vertical and sagittal directions.