| |
Group 1—3 extractions (n = 31)
|
Group 2—1 extraction (n = 32)
| |
|---|
|
Variables
|
Mean
|
S.D.
|
Mean
|
S.D.
|
P
|
|---|
|
Maxillary component
|
|
SNA (°)
|
82.37
|
4.75
|
82.70
|
4.65
|
0.778
|
|
Co-A (mm)
|
81.77
|
4.00
|
83.12
|
3.46
|
0.156
|
|
Mandibular component
|
|
SNB (°)
|
79.81
|
4.22
|
79.24
|
2.55
|
0.518
|
|
Co-Gn (mm)
|
114.50
|
6.30
|
113.95
|
5.36
|
0.708
|
|
Maxillomandibular relationship
|
|
ANB (°)
|
2.56
|
2.44
|
3.46
|
2.83
|
0.183
|
|
NAP (°)
|
174.60
|
3.95
|
173.38
|
3.86
|
0.218
|
|
Growth pattern
|
|
SN.GoGn (°)
|
28.61
|
5.45
|
26.68
|
4.80
|
0.140
|
|
LAFH (mm)
|
65.88
|
4.76
|
63.42
|
4.77
|
0.044a
|
|
Maxillary dentoalveolar component
|
|
Mx1.NA (°)
|
23.34
|
5.21
|
27.66
|
8.11
|
0.014a
|
|
Mx1-NA (mm)
|
4.85
|
2.42
|
5.12
|
4.13
|
0.758
|
|
Mx1-PP (mm)
|
27.74
|
2.27
|
26.38
|
2.81
|
0.039a
|
|
Mx6-PP (mm)
|
22.31
|
2.21
|
20.20
|
2.19
|
0.000a
|
|
Mx Molar asymmetry (mm)
|
1.83
|
0.42
|
2.94
|
1.07
|
0.000a
|
|
Mandibular dentoalveolar component
|
|
Md1.NB (°)
|
27.79
|
5.18
|
30.94
|
5.13
|
0.018a
|
|
Md1-NB (mm)
|
5.42
|
1.39
|
6.80
|
2.00
|
0.002a
|
|
IMPA (°)
|
96.89
|
6.49
|
102.34
|
7.39
|
0.002a
|
|
Md1-GoGn (mm)
|
36.95
|
2.94
|
35.95
|
2.89
|
0.180
|
|
Md6-GoGn (mm)
|
28.95
|
2.28
|
28.72
|
2.58
|
0.713
|
|
Md Molar asymmetry (mm)
|
3.15
|
0.58
|
1.88
|
0.54
|
0.000a
|
|
Dental relationship
|
|
Overjet (mm)
|
2.65
|
0.68
|
2.94
|
0.73
|
0.109
|
|
Overbite (mm)
|
1.01
|
0.74
|
0.81
|
0.95
|
0.353
|
|
Upper lip
|
|
UL-S Line (mm)
|
0.56
|
2.67
|
0.14
|
2.55
|
0.524
|
|
Prn-H (mm)
|
4.72
|
5.07
|
5.96
|
4.64
|
0.312
|
|
Lower lip
|
|
LL-S Line (mm)
|
1.81
|
2.86
|
1.07
|
2.48
|
0.272
|
|
Facial convexity and nasolabial angle
|
|
Z Angle (°)
|
77.99
|
6.95
|
74.59
|
4.46
|
0.023a
|
|
N’.Sn.Pog’(°)
|
157.49
|
5.94
|
157.67
|
5.90
|
0.905
|
|
Cm.Sn.UL (°)
|
106.79
|
9.51
|
102.93
|
10.55
|
0.132
|
-
aStatistically significant at P < 0.05
