Table 4: Comparison of the Pretreatment and Posttreatment Values within the Orthodontic Group

  Pre-Treatment Orthodontic Group Post-Treatment Orthodontic Group Wilcoxon Signed Rank Test
Mean SD Mean SD Sig.
Cranial base  
PoOr-NBa(°) 27.45 1.82 28.17 2.07 *
NSAr(°) 123.64 5.45 123.67 5.61 NS
BaSN(°) 131.47 4.39 132.41 5.20 NS
Maxillary  
SNA(°) 79.89 2.67 79.11 3.49 NS
PP-SN(°) 8.76 2.18 9.00 2.97 NS
Mandibular  
SNB(°) 81.35 2.81 80.79 2.84 NS
ML-SN(°) 33.84 5.23 33.65 6.16 NS
NPog-SN(°) 81.89 2.55 81.82 3.03 NS
Go-Me:S-N 111.38 8.22 114.43 7.07 **
Maxillary/Mandibular  
ANB(°) -1.46 2.06 -1.68 1.54 NS
Wits(mm) -8.46 2.73 -7.23 3.22 NS
PP-ML(°) 25.08 5.56 24.65 6.31 NS
M/M ratio 0.85 0.07 0.85 0.05 NS
NAPog(°) -3.71 5.09 -5.33 5.04 NS
Vertical  
ArGoMe(°) 121.23 4.28 119.44 3.87 **
Goupper(°) 45.65 3.43 43.69 3.71 **
Golower(°) 75.58 4.77 75.74 5.16 NS
Facial Prop 55.43 2.71 56.13 2.62 *
Y-axis(°) 61.43 4.08 61.03 3.91 NS
Dentoalveolar  
U1-SN(°) 111.76 6.02 110.21 4.88 NS
L1-ML(°) 93.74 7.30 86.65 6.59 **
U1-L1(°) 120.65 7.89 129.48 5.61 **
Soft tissure  
Holdaway angle 14.57 4.07 13.46 4.87 NS
Z angle 66.77 7.85 74.94 9.29 **

NS, not significant; * P<0.05; ** P<0.01; *** P<0.001.