Table 6 Changes in vertical indexes before and after treatment in 30 children with skeletal Class III malocclusion in deciduous teeth
Indicator | IIA stage | IIIA stage | IIA-IIIA stage | t | P |
|---|---|---|---|---|---|
MP-SN(°) | 36.46 ± 5.72 | 36.15 ± 5.87 | 0.31 ± 3.21 | 0.523 | 0.665 |
FH-MP(°) | 30.88 ± 4.87 | 31.64 ± 4.13 | -0.76 ± 2.35 | -1.777 | 0.086 |
Y-ais angle(°) | 63.02 ± 2.71 | 64.88 ± 3.06 | -1.86 ± 2.43 | -4.199 | 0.000*** |
Po-NB distance(mm) | -1.02 ± 1.91 | -0.31 ± 1.01 | -0.70 ± 2.03 | -1.893 | 0.068 |
SN-FH(°) | 5.42 ± 2.48 | 4.55 ± 3.44 | 0.86 ± 2.82 | 1.674 | 0.105 |