## 4 Discussion
In addition, if the (+) Signed difference increased toward the posterior, a tilting effect away from the maxilla may occur in the mandibular quadrant arch relative to the maxillary quadrant arch, and if the (-) signed difference increases, vice versa may occur  
\begin{table}
\begin{tabular}{c c c c c c c c c c c c c c c c} \hline \hline  & \multicolumn{4}{c}{**T500**} & \multicolumn{4}{c}{**Ttos**} & \multicolumn{4}{c}{**CS3600**} & \multicolumn{4}{c}{**i500**} \\ \cline{3-14}  & & **Median** & **Q1** & **Q3** & **Median** & **Q1** & **Q3** & **_p_ & **Median** & **Q1** & **Q3** & **_p_ & **Median** & **Q1** & **Q3** & **_p_ \\ \hline \multirow{4}{*}{FPS} & P3 & 11.6 & 7.3 & 25.2 & 10.5 & 7.1 & 24.1 & 0.80 & 47.5 & 23.7 & 68.7 & 0.08 \({}^{*}\) & 174.6 & 79.8 & 198.4 & 0.03 \({}^{*}\) \\  & P4 & 4.4 & 2.3 & 10.9 & 15.8 & 8.2 & 27.1 & 0.02 \({}^{*}\) & 31.1 & 148 & 72.1 & 0.01 \({}^{*}\) & 182.0 & 82.0 & 228.6 & 0.00 \({}^{*}\) \\  & P5 & 12.9 & 5.7 & 19.1 & 22.0 & 15.0 & 26.9 & 0.08 \({}^{*}\) & 57.4 & 25.1 & 95.6 & 0.01 \({}^{*}\) & 183.9 & 60.6 & 263.9 & 0.01 \({}^{*}\) \\  & P6 & 4.9 & 2.1 & 15.1 & 15.7 & 4.8 & 38.1 & 0.23 & 42.5 & 22.3 & 117.3 & 0.00 \({}^{*}\) & 192.2 & 69.3 & 246.1 & 0.00 \({}^{*}\) \\  & P7 & 19.9 & 9.1 & 33.2 & 31.2 & 14.5 & 60.7 & 0.38 & 84.2 & 280 & 114.6 & 0.02 \({}^{*}\) & 148.0 & 88.9 & 175.8 & 0.00 \({}^{*}\) \\ \hline \multirow{4}{*}{PPS} & P3 & 8.1 & 4.9 & 18.2 & 37.0 \({}^{*}\) & 9.1 & 49.0 \({}^{*}\) & 47.1 & 35.7 & 81.1 & 0.00 \({}^{*}\) & 84.6 & 47.8 & 92.5 & 0.02 \({}^{*}\) \\  & P4 & 9.2 & 0.4 & 13.8 & 38.9 \({}^{*}\) & 13.8 & 57.4 & 0.02 \({}^{*}\) & 77.0 & 38.5 & 106.1 & 0.00 \({}^{*}\) & 90.6 & 45.4 & 153.9 & 0.02 \({}^{*}\) \\  & P5 & 13.4 & 6.6 & 16.6 & 35.8 & 10.6 & 61.6 & 0.11 & 123.2 & 70.6 & 154.1 & 0.00 \({}^{*}\) & 98.8 & 63.4 & 132.6 & 0.00 \({}^{*}\) \\  & P6 & 14.7 & 4.9 & 22.8 & 86.7 \({}^{*}\) & 66.4 & 11.5 & 0.00 \({}^{*}\) & 188.9 & 69.9 & 236.6 & 0.00 \({}^{*}\) & 99.2 & 48.8 & 109.3 & 0.00 \({}^{*}\) \\  & P7 & 6.9 & 2.2 & 29.3 & 131.3 \({}^{*}\) & 117.6 & 146.7 & 0.00 \({}^{*}\) & 184.2 & 61.2 & 259.4 & 0.00 \({}^{*}\) & 82.3 & 43.5 & 105.0 & 0.00 \({}^{*}\) \\ \hline \multirow{4}{*}{SDEB} & P3 & 13.1 & 7.4 & 14.6 & 29.2 & 18.3 & 61.2 & 0.04 \({}^{*}\) & 49.3 & 155.5 & 116.2 & 0.04 \({}^{*}\) & 51.8 \({}^{*}\) & 33.4 & 68.4 & 0.04 \({}^{*}\) \\  & P4 & 6.5 & 3.4 & 17.4 & 15.1 & 3.9 & 34.0 & 0.44 & 51.5 & 32.8 & 39.1 & 0.00 \({}^{*}\) & 89.0 \({}^{*}\) & 60.4 & 105.0 \({}^{*}\) \\  & P5 & 11.2 & 2.0 & 14.7 & 25.0 & 13.7 & 42.3 & 0.04 \({}^{*}\) & 78.5 & 404. & 144.5 & 0.00 \({}^{*}\) & 67.5 \({}^{*}\) & 46.4 & 97.5 & 0.00 \({}^{*}\) \\  & P6 & 9.9 & 5.0 & 18.6 & 24.0 & 12.4 & 88.6 & 0.11 & 73.6 & 195.8 & 188.0 & 0.01 \({}^{*}\) & 124.4 \({}^{*}\) & 88.8 & 165.1 & 0.01 \({}^{*}\) \\  & P7 & 13.2 & 3.3 & 19.4 & 48.8 & 15.7 & 71.5 & 0.04 \({}^{*}\) & 163.8 & 72.9 & 235.9 & 0.00 \({}^{*}\) & 189.7\({}^{*}\) & 148.1 & 231.7 & 0.00 \({}^{*}\) \\ \hline \multirow{4}{*}{LSDEB} & P3 & 8.6 & 3.6 & 19.5 & 74.6 & 50.4 & 99.9 & 0.00 \({}^{*}\) & 52.1 & 3.5 & 105.9 & 0.20 & 88.8 \({}^{*}\) & 55.5 & 108.1 & 0.00 \({}^{*}\) \\  & P4 & 11.0 & 6.6 & 19.8 & 109.6 & 61.6 & 127.2 & 0.00 \({}^{*}\) & 33.3 & 132.2 & 75.8 & 0.16 & 91.6 \({}^{*}\) & 74.4 & 165.5 & 0.00 \({}^{*}\) \\ \cline{1-1}  & P5 & 3.8 & 1.0 & 6.6 & 137.2 & 91.3 & 146.8 & 0.00 \({}^{*}\) & 42.9 & 32.7 & 87.1 & 0.00 \({}^{*}\) & 146.7 \({}^{*}\) & 81.3 & 242.0 & 0.00 \({}^{*}\) \\ \cline{1-1}  & P6 & 15.0 & 4.0 & 29.7 & 113.1 & 78.3 & 149.0 & 0.00 \({}^{*}\) & 49.9 &For example, in Trios, the (+) signed and unsigned differences in the posterior area, such as in position 7 of the PPS group, was statistically greater than those in the other positions. This reveals differences increased significantly more than that in the anterior position, indicating that there may be a tilting effect away from the maxilla in the posterior in the absence of posterior support. In contrast, in i500, the (-) signed differences in position 7 of the SSDEB and LSDEB group was statistically lower than those in the other positions.