Table 8. Distribution of mandibular teeth (1st and 2nd molars) among both genders according to number of roots, number of canals canal configuration.
| 1st molar | 2nd molar | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| M | F | M | F | ||||||
| Number of roots | |||||||||
| 1 root | 0 (0.0) |
0 (0.0) |
0 (0.0) |
2 (1.2) |
|||||
| 2 roots | 145 (96.0) | 129 (92.8) | 171 (98.8) | 157 (95.7) |
|||||
| 3 roots | 6 (4.0) |
10 (7.2) |
2 (1.2) |
5 (3.0) |
|||||
| Number of canals | |||||||||
| 1 canal | 0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
|||||
| 2 canals | 1 (0.7) |
1 (0.7) |
9 (5.2) |
14 (8.5) |
|||||
| 3 canals | 98 (64.9) | 89 (64.0) | 156 (90.2) | 138 (84.1) |
|||||
| 4 canals | 52 (34.4) | 49 (35.3) | 8 (4.6) |
12 (7.3) |
|||||
| Vertucci types | Mesial root | Distal root | Mesial root | Distal root | |||||
| M | F | M | F | M | F | M | F | ||
| Type I | 2 (1.3) |
1 (0.7) |
103 (68.2) | 97 (69.8) | 8 (4.6) |
13 (7.9) |
164 (94.8) |
158 (96.3) |
|
| Type II | 48 (31.8) | 57 (41.0) |
1 (0.7) |
8 (5.8) |
41 (23.7) | 45 (27.4) | 0 (0.0) |
3 (1.8) |
|
| Type III | 3 (2.0) |
1 (0.7) |
25 (16.6) | 25 (18.0) | 26 (15.0) | 28 (17.1) | 2 (1.2) |
1 (0.6) |
|
| Type IV | 93 (61.6) | 75 (54.0) |
0 (0.0) |
2 (1.4) |
77 (44.5) | 56 (34.1) | 0 (0.0) |
0 (0.0) |
|
| Type V | 5 (3.3) |
5 (3.6) |
22 (14.6) |
7 (5.0) |
21 (12.1) | 22 (13.4) | 7 (4.0) |
2 (1.2) |
|
| Type VI | 0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
|
| Type VII | 0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
|
| Others | 0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
|
| Bold numbers refer to significant difference (P< 0.05) | |||||||||