Research Article
Anatomical Evaluation of Mandibular Molars in a Saudi Population: An In Vivo Cone-Beam Computed Tomography Study
Table 4
Comparison amongst right and left edges among mandibular 2nd molars N (%).
| | | All teeth (N = 338) | 1-rooted teeth (N = 2) | 2-rooted teeth (N = 329) | 3-rooted teeth (N = 7) | | Right | Left | | Right | Left | | Right | Left | | Right | Left | |
| | Number of canals (N = 338) | | 2 canals | 9 (5.4) | 14 (8.2) | 0.575 | 1 (100.0) | 0 (0.0) | 1.000 | 8 (4.9) | 14 (8.5) | 0.414 | — | — | NC | | 3 canals | 149 (88.7) | 146 (85.9) | | 0 (0.0) | 1 (100.0) | | 149 (90.9) | 145 (87.9) | | — | — | | 4 canals | 10 (6.0) | 10 (5.9) | | — | — | | 7 (4.3) | 6 (3.6) | | 3 (100.0) | 4 (100.0) | | Total | 168 (49.7) | 170 (50.3) | | 1 (50.0) | 1 (50.0) | | 164 (49.8) | 165 (50.2) | | 3 (42.9) | 4 (57.1) |
| | M. Vertucci types (N = 338) | | Type I | 8 (4.8) | 13 (7.6) | 0.78 | — | — | 1.000 | 8 (4.9) | 13 (7.9) | 0.792 | — | — | 0.405 | | Type II | 41 (24.4) | 45 (26.5) | | — | — | | 40 (24.4) | 44 (26.7) | | 1 (33.3) | 1 (25.0) | | Type III | 29 (17.3) | 25 (14.7) | | — | — | | 28 (17.1) | 25 (15.2) | | 1 (33.3) | 0 (0.0) | | Type IV | 67 (39.9) | 66 (38.8) | | 0 (0.0) | 1 (100.0) | | 67 (40.9) | 63 (38.2) | | 0 (0.0) | 2 (50.0) | | Type V | 23 (13.7) | 21 (12.4) | | 1 (100.0) | 0 (0.0) | | 21 (12.8) | 20 (12.1) | | 1 (33.3) | 1 (25.0) | | Total | 168 (49.7) | 170 (50.3) | | 1 (50.0) | 1 (50.0) | | 164 (49.8) | 165 (50.2) | | 3 (42.9) | 4 (57.1) |
| | D. Vertucci types (N = 338) | | Type I | 161 (95.8) | 162 (95.3) | 0.857 | 1 (100.0) | 1 (100.0) | NC | 157 (95.7) | 158 (95.8) | 0.881 | 3 (100.0) | 3 (75.0) | 1.000 | | Type II | 2 (1.2) | 1 (0.6) | | — | — | | 2 (1.2) | 1 (0.6) | | — | — | | Type III | 1 (0.6) | 2 (1.2) | | — | — | | 1 (0.6) | 2 (1.2) | | — | — | | Type V | 4 (2.4) | 5 (2.9) | | — | — | | 4 (2.4) | 4 (2.4) | | 0 (0.0) | 1 (25.0) | | Total | 168 (49.7) | 170 (50.3) | | 1 (50.0) | 1 (50.0) | | 164 (49.8) | 165 (50.2) | | 3 (42.9) | 4 (57.1) |
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