Research Article
Anatomical Evaluation of Mandibular Molars in a Saudi Population: An In Vivo Cone-Beam Computed Tomography Study
Table 1
Frequency of number of roots, number of canals, and Vertucci type among mandibular 1st molars N (%).
| | | All teeth (N = 290) | 2-rooted teeth (N = 274) | 3-rooted teeth (N = 16) |
| | Number of canals | | 2 canals | 2 (0.7) | 2 (0.7) | — | | 3 canals | 187 (64.5) | 185 (67.5) | 2 (12.5) | | 4 canals | 101 (34.8) | 87 (31.8) | 14 (87.5) |
| | M. root Vertucci types | | Type I | 3 (1) | 2 (0.7) | 1 (6.3) | | Type II | 105 (36.2) | 100 (36.5) | 5 (31.3) | | Type III | 4 (1.4) | 3 (1.1) | 1 (6.3) | | Type IV | 168 (57.9) | 160 (58.4) | 8 (50.0) | | Type V | 10 (3.4) | 9 (3.3) | 1 (6.3) |
| | D. root Vertucci types | | Type I | 200 (69) | 184 (67.2) | 16 (100.0) | | Type II | 9 (3.1) | 9 (3.3) | — | | Type III | 50 (17.2) | 50 (18.2) | — | | Type IV | 2 (0.7) | 2 (0.7) | — | | Type V | 29 (10) | 29 (10.6) | — |
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All extra roots had one canal and Vertucci type I. |
