Table 1 Comparison of pressure drop (ΔP), maximum midsagittal velocity (Vms), and maximum wall shear stress (Pws) at inspiration and expiration before (T0) and after (T1) rapid maxillary expansion (n = 17)
From: The effect of rapid maxillary expansion on the upper airway’s aerodynamic characteristics
T0 | T1 | T0 versus T1 | ||||
|---|---|---|---|---|---|---|
Mean | SD | Mean | SD | p value | ||
Paired t test | Wilcoxon test | |||||
Inspiration | ||||||
ΔP (Pa) | − 4.00 | 1.87 | − 4.36 | 2.45 | 0.549 | |
Maximum Vms (m/s) | 2.48 | 0.70 | 2.43 | 0.92 | 0.906 | |
Maximum Pws (Pa) | 1.29 | 1.24 | 1.03 | 1.32 | 0.163 | |
Expiration | ||||||
ΔP (Pa) | 2.96 | 2.56 | 2.81 | 2.43 | 0.943 | |
Maximum Vms (m/s) | 2.79 | 1.09 | 2.28 | 0.82 | 0.057 | |
Maximum Pws (Pa) | 1.63 | 1.85 | 0.93 | 0.71 | 0.381 | |