Table 3 Results for linear and angular measurements
Unit | Before expansion | After expansion | Treatment change | 95% CI for treatment change | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
mean | sd | mean | sd | mean | sd | Lower limit | Upper limit | p value | |||
Linear measurements | |||||||||||
1 | Anterior inter-maxillary distance (AIMD) | mm | 17.05 | 3.06 | 19.81 | 3.11 | 2.76 | 1.51 | 1.92 | 3.60 | < .0001** |
2 | Posterior inter-zygomatic distance (PIZD) | mm | 111.80 | 4.99 | 114.20 | 5.34 | 2.40 | 0.58 | 2.08 | 2.72 | < .0001** |
3 | Posterior inter-temporal distance (PITD) | mm | 115.38 | 5.35 | 115.40 | 5.38 | 0.02 | 0.08 | − 0.02 | 0.06 | 0.175 |
Angular measurements | |||||||||||
4 | Right zygomaticotemporal angle (Rt ZTA) | ° | 134.20 | 5.81 | 134.10 | 6.08 | − 0.10 | 1.09 | − 0.70 | 0.50 | 0.612 |
5 | Left zygomaticotemporal angle (Lt ZTA) | ° | 134.30 | 6.05 | 134.30 | 5.63 | − 0.04 | 1.53 | − 0.89 | 0.81 | 0.882 |
6 | Right angle of the zygomatic process (Rt ZPA) | ° | 87.16 | 4.71 | 88.90 | 5.18 | 1.74 | 1.07 | 1.15 | 2.33 | < .0001** |
7 | Left angle of the zygomatic process (Lt ZPA) | ° | 86.62 | 5.29 | 88.75 | 6.00 | 2.13 | 1.57 | 1.26 | 3.00 | 0.000** |