Morphological Study of Root Canals of Maxillary Molars by Cone-Beam Computed Tomography
Table 5
Distribution of the different morphological types proposed by Vertucci [15] for mesiobuccal roots, distobuccal roots, and palatal roots according to sex, age group, and dental arch of the patient evaluated.
Mesiobuccal roots according to sex, age group, and dental arch of the patient evaluated
Sex
Age group
Arch
Vertucci classification
Male (n = 438)
Female (n = 562)
Children (n = 28)
Adults (n = 845)
Middle-aged (n = 114)
Older adults (n = 13)
Right (n = 505)
Left (n = 495)
Type I
2
0
1
1
0
0
0
2
(0.5%)
(0.0%)
(3.6%)
(0.1%)
(0.0%)
(0.0%)
(0.0%)
(0.4%)
Type II
4
5
1
8
0
0
4
5
(0.9%)
(0.9%)
(3.6%)
(0.9%)
(0.0%)
(0.0%)
(0.8%)
(1.0%)
Type III
3
9
1
10
1
0
5
7
(0.7%)
(1.6%)
(3.6%)
(1.2%)
(0.9%)
(0.0%)
(1.0%)
(1.4%)
Type IV
311
373
21
572
81
10
332
352
(71.0%)
(66.4%)
(75.0%)
(67.7%)
(71.1%)
(76.9%)
(65.7%)
(71.1%)
Type V
0 (0.0%)
1 (0.2%)
0 (0.0%)
1 (0.1%)
0 (0.0%)
0 (0.0%)
0 (0.0%)
1 (0.2%)
Type VI
27 (6.2%)
56 (10.0%)
1 (3.6%)
73 (8.6%)
8 (7.0%)
1 (7.7%)
42 (8.3%)
41 (8.3%)
Type VII
10 (2.3%)
19 (3.4%)
2 (7.1%)
22 (2.6%)
4 (3.5%)
1 (7.7%)
15 (3.0%)
14 (2.8%)
Type VIII
81 (18.5%)
99 (17.6%)
1 (3.6%)
158 (18.7%)
20 (17.5%)
1 (7.7%)
107 (21.2%)
73 (14.7%)
p value1
0.114
-
0.146
Distobuccal roots according to sex, age group, and dental arch of the patient evaluated
Vertucci classification
Sex
Age group
Arch
Male (n = 438)
Female (n = 562)
Children (n = 28)
Adults (n = 845)
Middle-aged (n = 114)
Older adults (n = 13)
Right (n = 505)
Left (n = 495)
Type I
19
24
3
33
7
0
21
22
(4.3%)
(4.3%)
(10.7%)
(3.9%)
(6.1%)
(0.0%)
(4.2%)
(4.4%)
Type II
2
2
0
3
1
0
3
1
(0.5%)
(0.4%)
(0.0%)
(0.4%)
(0.9%)
(0.0%)
(0.6%)
(0.2%)
Type III
19
31
3
41
6
0
20
30
(4.3%)
(5.5%)
(10.7%)
(4.9%)
(5.3%)
(0.0%)
(4.0%)
(6.1%)
Type IV
153
192
9
285
45
6
182
163
(34.9%)
(34.2%)
(32.1%)
(33.7%)
(39.5%)
(46.2%)
(36.0%)
(32.9%)
Type V
2 (0.5%)
5 (0.9%)
0 (0.0%)
6 (0.7%)
1 (0.9%)
0 (0.0%)
3 (0.6%)
4 (0.8%)
Type VI
114 (26.0%)
146 (26.0%)
3 (10.7%)
227 (26.9%)
27 (23.7%)
3 (23.1%)
136 (26.9%)
124 (25.1%)
Type VII
112 (25.6%)
135 (24.0%)
10 (35.7%)
209 (24.7%)
24 (21.1%)
4 (30.8%)
122 (24.2%)
125 (25.3%)
Type VIII
17 (3.9%)
27 (4.8%)
0 (0.0%)
41 (4.9%)
3 (2.6%)
0 (0.0%)
18 (3.6%)
26 (5.3%)
p value1
0.956
-
0.531
Palatal roots according to sex, age group, and dental arch of the patient evaluated
Vertucci classification
Sex
Age group
Arch
Male (n = 438)
Female (n = 562)
Children (n = 28)
Adults (n = 845)
Middle-aged (n = 114)
Older adults (n = 13)
Right (n = 505)
Left (n = 495)
Type I
121
145
11
218
34
3
129
137
(27.6%)
(25.8%)
(39.3%)
(25.8%)
(29.8%)
(23.1%)
(25.5%)
(27.7%)
Type II
8
9
0
16
1
0
7
10
(1.8%)
(1.6%)
(0.0%)
(1.9%)
(0.9%)
(0.0%)
(1.4%)
(2.0%)
Type III
69
91
5
134
18
3
85
75
(15.8%)
(16.2%)
(17.9%)
(15.9%)
(15.8%)
(23.1%)
(16.8%)
(15.2%)
Type IV
36
56
0
83
8
1
51
41
(8.2%)
(10.0%)
(0.0%)
(9.8%)
(7.0%)
(7.7%)
(10.1%)
(8.3%)
Type V
6
12
0
16
2
0
12
6
(1.4%)
(2.1%)
(0.0%)
(1.9%)
(1.8%)
(0.0%)
(2.4%)
(1.2%)
Type VI
56
77
4
111
15
3
58
75
(12.8%)
(13.7%)
(14.3%)
(13.1%)
(13.2%)
(23.1%)
(11.5%)
(15.2%)
Type VII
132
159
8
245
35
3
150
141
(30.1%)
(28.3%)
(28.6%)
(29.0%)
(30.7%)
(23.1%)
(29.7%)
(28.5%)
Type VIII
10
13
0
22
1
0
13
10
(2.3%)
(2.3%)
(0.0%)
(2.6%)
(0.9%)
(0.0%)
(2.6%)
(2.0%)
p value2
0.929
-
0.406
1Fisher’s exact test; 2chi-squared test for homogeneity.
