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Table 4 Descriptive statistics and statistical comparisons of the T2-T3 changes

From: Mechanisms of Class II correction induced by the crown Herbst appliance as a single-phase Class II therapy: 1 year follow-up

Cephalometric measures cHerbst group Control group Net change P value
  Mean SD Mean SD
Skeletal measures       
 Co hor (mm) −0.6 1.1 −0.5 1.2 0.1 0.876
 Co ver (mm) 0.3 1.1 0.0 1.3 0.3 0.489
 A hor (mm) 0.8 1.5 0.3 1.8 0.5 0.276
 B hor (mm) 0.7 1.8 0.9 1.8 −0.2 0.752
 Pg hor (mm) 0.7 2.1 1.0 2.1 −0.3 0.598
 Me ver (mm) 1.4 2.3 1.2 1.0 0.2 0.681
 Co-A (mm) 1.5 1.7 1.0 1.3 0.5 0.228
 Co-Gn (mm) 1.8 2.2 1.6 1.6 0.2 0.737
 Co-Go (mm) 1.6 2.7 2.0 2.5 −0.4 0.556
 Go-Me (mm) 1.0 2.7 0.8 2.0 0.2 0.868
 SNA (°) 0.4 1.0 −0.3 1.0 0.7 0.042
 SNB (°) 0.3 0.9 0.1 0.8 0.2 0.504
 SNPog (°) 0.7 0.9 0.1 0.9 0.6 0.482
 ANB (°) 0.1 0.9 −0.4 0.8 0.5 0.118
 pp to T-FMN (°) 0.0 1.0 0.1 1.8 −0.1 0.880
 ml to T-FMN (°) −0.7 1.5 −0.8 1.7 0.1 0.740
 Co-Go-Me (°) −0.5 1.9 −0.6 1.6 0.1 0.875
Dental measures       
 Overjet (mm) 0.7 1.0 −0.5 1.2 1.2 0.000
 Overbite (mm) 1.4 1.2 0.0 0.7 1.4 0.000
 ms hor (mm) 2.1 2.5 0.8 1.7 1.3 0.055
 ms ver (mm) 1.5 1.6 0.9 1.0 0.6 0.077
 Upper molar tipping (°) 4.4 4.5 1.7 3.6 2.7 0.028
 mi hor (mm) 0.4 1.7 0.9 1.6 −0.5 0.342
 mi ver (mm) 0.8 1.8 0.6 1.0 0.2 0.774
 is hor (mm) 0.6 1.8 0.2 1.6 0.4 0.418
 is ver (mm) 1.2 1.6 0.5 1.0 0.7 0.110
 ii hor (mm) −0.1 1.5 0.7 1.4 −0.8 0.075
 ii ver (mm) −0.2 1.9 0.5 0.8 −0.7 0.192
 Upper incisor inclination (°) −0.6 3.3 −1.0 2.6 0.4 0.666
 Lower incisor inclination (°) −3.2 3.9 −0.6 2.5 −2.6 0.013