Cone Beam Computed Tomographic Analyses of the Position and Course of the Mandibular Canal: Relevance to the Sagittal Split Ramus Osteotomy
Table 1
Measurements in three different positions of the mandible with their comparison between gender-side in millimeters.
Side
Gender
Minimum
Maximum
Mean
SD
value
Total
Mean
SD
P1
B
Right
1
3.3
10.8
6.4
1.53
0.650
6.5
1.54
0
2.2
9.9
6.3
1.85
Left
1
3.5
11.4
6.4
1.67
0.452
6.3
1.69
0
3.6
10.6
6.6
1.38
L
Right
1
0.9
7.6
2.4
1.02
0.000*
2.2
1.00
0
0.6
5.8
1.9
0.92
Left
1
1.0
4.0
2.2
0.70
0.004*
2.1
0.83
0
0.8
5.0
1.9
0.94
I
Right
1
1.4
11.4
6.1
1.75
0.000*
6.7
1.75
0
3.4
13.0
7.4
1.52
Left
1
3.1
12.1
6.5
1.58
0.000*
6.9
1.63
0
3.3
13.0
7.3
1.57
S
Right
1
8.6
19.6
14.4
1.95
0.000*
15.2
2.47
0
10.1
23.8
16.0
2.69
Left
1
11.0
19.7
15.1
2.08
0.000*
15.6
2.58
0
11.1
24.0
16.2
2.92
CB
Right
1
1.7
4.8
3.4
0.56
0.011*
3.5
0.60
0
2.4
5.9
3.6
0.63
Left
1
1.8
5.2
3.3
0.59
0.042*
3.4
0.60
0
2.3
5.1
3.4
0.60
P2
B
Right
1
2.7
9.1
5.7
1.57
0.428
5.7
1.57
0
2.2
9.4
5.6
1.57
Left
1
1.5
12.8
5.8
1.85
0.511
5.8
1.73
0
2.8
10.0
5.9
1.60
L
Right
1
0.8
5.1
2.5
0.96
0.172
2.4
1.01
0
0.7
5.1
2.3
1.06
Left
1
0.8
4.7
2.3
0.88
0.166
2.2
0.90
0
0.8
4.3
2.1
0.92
I
Right
1
2.9
14.0
7.0
1.80
0.000*
7.6
1.79
0
4.8
12.4
8.2
1.57
Left
1
2.8
11.6
7.3
1.57
0.000*
7.7
1.76
0
3.0
14.5
8.2
1.83
S
Right
1
6.1
19.7
10.6
2.21
0.000*
11.3
2.57
0
6.5
20.2
12.2
2.66
Left
1
6.2
14.9
11.3
1.77
0.045*
11.6
2.05
0
4.3
19.3
11.8
2.30
CB
Right
1
2.0
4.7
3.2
0.53
0.043*
3.2
0.51
0
2.5
4.4
3.3
0.49
Left
1
1.9
4.9
3.2
0.57
0.735
3.2
0.52
0
2.5
4.1
3.2
0.47
P3
B
Right
1
0.8
9.4
4.0
1.61
0.041*
3.8
1.68
0
1.1
9.3
3.6
1.73
Left
1
1.3
9.5
4.1
1.79
0.549
4.0
1.65
0
1.3
8.5
3.9
1.48
L
Right
1
0.8
6.3
2.8
1.46
0.620
2.8
1.45
0
0.6
7.3
2.9
1.45
Left
1
0.6
6.5
2.5
1.35
0.728
2.5
1.27
0
0.7
6.8
2.6
1.19
I
Right
1
5.5
17.0
10.4
2.37
0.000*
11.1
2.48
0
4.4
16.0
11.9
2.39
Left
1
5.4
16.8
10.7
2.12
0.000*
11.3
2.41
0
3.0
18.2
12.0
2.51
S
Right
1
5.4
15.3
9.4
2.02
0.010*
9.7
2.11
0
4.3
18.5
10.1
2.15
Left
1
3.8
13.3
9.7
2.05
0.095
9.9
1.95
0
4.5
13.5
10.1
1.81
CB
Right
1
1.1
5.4
2.8
0.80
0.555
2.8
0.71
0
1.8
5.5
2.9
0.60
Left
1
1.5
7.0
3.0
0.86
0.805
2.9
0.88
0
2.1
8.0
2.9
0.90
Groups: 1: women, 0: men; : statistical significance; SD: standard deviation. The distance between the external surface of the buccal cortical plate and the outer surface of the mandibular canal (B); between the external surface of the lingual cortical plate and the outer surface of the mandibular canal (L); between the external surface of the inferior border of the mandible and the outer surface of the mandibular canal (I); from superior aspect of the canal to the alveolar crest (S) and the thickness of inferior cortical bone (CB).
