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Table 3 Descriptive statistics and statistical comparisons of the T1-T2 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) −0.9 1.2 −0.4 1.3 −0.5 0.198
 Co ver (mm) 0.3 1.2 0.9 1.3 −0.6 0.098
 A hor (mm) 0.5 1.0 0.9 1.2 −0.4 0.161
 B hor (mm) 1.7 1.9 1.0 1.7 0.7 0.185
 Pg hor (mm) 1.9 2.1 1.4 2.1 0.5 0.383
 Me ver (mm) 3.4 1.6 2.6 2.7 0.8 0.193
 Co-A (mm) 1.6 1.5 1.3 1.8 0.3 0.593
 Co-Gn (mm) 4.0 1.8 2.7 2.4 1.3 0.026
 Co-Go (mm) 2.7 3.7 1.1 1.5 1.6 0.071
 Go-Me (mm) 1.4 3.1 1.3 2.7 0.1 0.913
 SNA (°) −0.3 0.9 0.2 1.1 −0.5 0.142
 SNB (°) 0.8 1.0 0.1 0.8 0.7 0.014
 SNPog (°) 0.7 0.9 0.3 0.6 0.4 0.122
 ANB (°) −1.1 1.0 0.0 0.7 −1.1 0.000
 pp to T-FMN (°) 0.7 1.2 −0.5 1.9 1.2 0.005
 ml to T-FMN (°) 0.3 1.9 0.1 2.0 0.2 0.684
 Co-Go-Me (°) 0.6 2.8 0.7 1.7 −0.1 0.890
Dental measures       
 Overjet (mm) −2.7 1.9 0.0 0.8 −2.7 0.000
 Overbite (mm) −2.7 1.3 −0.4 0.7 −2.3 0.000
 ms hor (mm) −1.6 1.6 1.1 1.7 −2.7 0.000
 ms ver (mm) 1.4 1.2 1.7 1.9 −0.3 0.501
 Upper molar tipping (°) −5.7 4.5 1.4 4.1 −7.1 0.000
 mi hor (mm) 3.6 1.9 1.1 1.7 2.5 0.000
 mi ver (mm) 2.6 1.3 1.6 2.0 1.0 0.031
 is hor (mm) 0.1 1.8 1.0 1.3 −0.9 0.076
 is ver (mm) 1.6 1.4 1.1 1.6 0.5 0.291
 ii hor (mm) 2.9 1.7 1.0 1.6 1.9 0.000
 ii ver (mm) 4.3 1.7 1.5 2.0 2.8 0.000
 Upper incisor inclination (°) −2.3 4.6 0.3 2.1 −2.6 0.023
 Lower incisor inclination (°) 4.6 4.1 −0.8 3.4 5.4 0.000