Table 3 Results of the statistical analysis (median, SD and t test)
From: Early treatment of posterior crossbite - a randomised clinical trial
Control | Therapy | Control-therapy (T2) | |||||||
|---|---|---|---|---|---|---|---|---|---|
Code | Unit | Parameter | T1 | T2 | t test | T1 | T2 | t test | t test |
uitw | [mm] | upper intercanine transversal width (III - III) | 27.9 (2.2) | 28.9 (2.2) | 0.000*** | 29.0 (2.6) | 32.6 (2.7) | 0.000*** | 0.000*** |
uatw | [mm] | upper anterior transversal width (IV - IV) | 32.2 (1.9) | 32.7 (2.0) | 0.006** | 32.6 (2.2) | 36.7 (2.8) | 0.000*** | 0.000*** |
umtw | [mm] | upper median transversal width (V - V) | 37.2 (2.4) | 37.7 (2.3) | n.s. | 36.8 (1.8) | 41.7 (3.1) | 0.000*** | 0.000*** |
uptw | [mm] | upper posterior transversal width (6–6) | 42.6 (3.1) | 43.4 (2.3) | n.s. | 42.2 (2.6) | 47.3 (2.5) | 0.000*** | 0.000*** |
malo | [mm] | median arch length on the occlusal plane | 34.0 (4.9) | 34.7 (4.6) | n.s. | 34.8 (4.7) | 34.4 (4.8) | n.s. | 0.045* |
aio | [°] | arch inclination on the occlusal plane | 66.1 (5.5) | 66.9 (7.3) | n.s. | 65.6 (4.5) | 70.8 (5.4) | 0.000*** | 0.001** |
apbal | [mm] | anterior palatal base arch length (IV - IV) | 34.7 (4.1) | 34.6 (4.0) | n.s. | 35.7 (3.4) | 38.8 (3.9) | 0.000*** | 0.000*** |
mpbal | [mm] | median palatal base arch length (V - V) | 38.5 (4.2) | 39.4 (3.9) | 0.006** | 40.4 (3.5) | 44.3 (3.9) | 0.000*** | 0.000*** |
ppbal | [mm] | posterior palatal base arch length (6–6) | 41.2 (2.9) | 41.6 (2.9) | n.s. | 41.5 (4.1) | 46.1 (3.8) | 0.000*** | 0.000*** |
mapd | [mm] | median anterior palatal depth (IV - IV) | 11.4 (1.6) | 11.5 (2.0) | n.s. | 12.0 (1.8) | 11.1 (1.8) | 0.001** | 0.002** |
mppd | [mm] | median posterior palatal depth (V - V) | 13.7 (1.7) | 14.0 (1.8) | n.s. | 14.6 (2.1) | 14.2 (2.1) | n.s. | 0.011* |
litw | [mm] | lower intercanine transversal width (III - III) | 25.2 (1.7) | 25.4 (1.6) | n.s. | 25.8 (1.9) | 25.9 (1.7) | n.s. | n.s. |
latw | [mm] | lower anterior transversal width (IV - IV) | 33.4 (1.6) | 33.6 (1.9) | n.s. | 33.8 (1.8) | 34.2 (1.6) | n.s. | n.s. |
lmtw | [mm] | lower median transversal width (V - V) | 41.3 (2.4) | 41.4 (2.0) | n.s. | 41.6 (2.0) | 41.8 (1.9) | n.s. | n.s. |
lptw | [mm] | lower posterior transversal width (6–6) | 47.2 (2.5) | 47.7 (2.6) | n.s. | 48.1 (2.0) | 48.6 (1.7) | n.s. | n.s. |
md | [mm] | midline deviation | 1.9 (1.2) | 2.1 (1.3) | n.s. | 2.1 (1.3) | 0.5 (0.5) | 0.000*** | 0.000*** |
vob | [mm] | vertical overbite | 0.7 (1.9) | 1.0 (1.8) | n.s. | 0.3 (2.4) | 1.8 (2.1) | 0.000*** | 0.005** |
soj | [mm] | sagittal overjet | 3.2 (2.0) | 3.4 (2.4) | n.s. | 3.6 (1.5) | 3.3 (1.2) | n.s. | n.s. |