| |
Group 1—3 extractions (n = 31)
|
Group 2—1 extraction (n = 32)
| |
|---|
|
Variables
|
Mean
|
S.D.
|
Mean
|
S.D.
|
P
|
|---|
|
Maxillary component
|
|
SNA (°)
|
− 1.73
|
3.17
|
− 0.58
|
2.79
|
0.131
|
|
Co-A (mm)
|
− 0.95
|
4.12
|
− 0.29
|
2.00
|
0.416
|
|
Mandibular component
|
|
SNB (°)
|
0.49
|
2.27
|
− 0.02
|
2.27
|
0.376
|
|
Co-Gn (mm)
|
3.55
|
5.14
|
1.98
|
3.27
|
0.153
|
|
Maxillomandibular relationship
|
|
ANB (°)
|
− 2.21
|
2.19
|
− 0.56
|
1.87
|
0.002a
|
|
NAP (°)
|
2.95
|
4.44
|
0.49
|
2.79
|
0.010a
|
|
Growth pattern
|
|
SN.GoGn (°)
|
− 0.58
|
2.89
|
− 1.18
|
3.12
|
0.434
|
|
LAFH (mm)
|
2.45
|
2.56
|
1.10
|
3.51
|
0.088
|
|
Maxillary dentoalveolar component
|
|
Mx1.NA (°)
|
− 1.11
|
6.38
|
1.91
|
7.80
|
0.098
|
|
Mx1-NA (mm)
|
− 0.68
|
3.09
|
− 0.38
|
3.27
|
0.716
|
|
Mx1-PP (mm)
|
− 0.66
|
1.24
|
− 0.43
|
1.74
|
0.533
|
|
Mx6-PP (mm)
|
1.96
|
2.10
|
0.78
|
1.98
|
0.024a
|
|
Mx Molar asymmetry (mm)
|
− 0.16
|
0.43
|
0.75
|
1.13
|
0.000a
|
|
Mandibular dentoalveolar component
|
|
Md1.NB (°)
|
− 1.03
|
5.08
|
3.09
|
4.59
|
0.001a
|
|
Md1-NB (mm)
|
− 0.47
|
0.96
|
0.86
|
1.34
|
0.000a
|
|
IMPA (°)
|
− 0.67
|
5.58
|
3.13
|
5.62
|
0.009a
|
|
Md1-GoGn (mm)
|
0.98
|
2.05
|
0.49
|
1.86
|
0.325
|
|
Md6-GoGn (mm)
|
2.12
|
1.67
|
1.40
|
1.63
|
0.087
|
|
Md Molar asymmetry (mm)
|
1.06
|
0.57
|
0.09
|
0.72
|
0.000a
|
|
Dental relationship
|
|
Overjet (mm)
|
− 2.23
|
1.72
|
− 2.03
|
1.87
|
0.648
|
|
Overbite (mm)
|
− 0.88
|
2.27
|
− 1.16
|
1.31
|
0.551
|
|
Upper lip
|
|
UL-S Line (mm)
|
− 1.85
|
2.34
|
− 1.28
|
1.44
|
0.241
|
|
Prn-H (mm)
|
3.80
|
4.43
|
2.65
|
2.88
|
0.223
|
|
Lower lip
|
|
LL-S Line (mm)
|
− 1.68
|
2.27
|
− 0.88
|
1.47
|
0.101
|
|
Facial convexity and nasolabial angle
|
|
Z Angle (°)
|
2.15
|
4.72
|
0.68
|
5.41
|
0.254
|
|
N’.Sn.Pog’(°)
|
1.41
|
4.68
|
0.03
|
3.89
|
0.207
|
|
Cm.Sn.UL (°)
|
1.71
|
7.73
|
1.69
|
9.22
|
0.992
|
-
aStatistically significant at P < 0.05
