TABLE 3.
Root canal configuration according to the types described by Vertucci and Sert & Bayirli in non-C-shaped mandibular first (n=478) and second molars (n=471)
| Mandibular first molars | No. of roots | Root | Root canal configuration (n/%) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Type I | Type II | Type III | Type IV | Type V | Type XV | Type XVIII | Type XIX | |||
| Single rooted | - | 1 (100.0) | - | - | - | - | - | - | ||
| (n=1) | ||||||||||
| Two rooted | M | 7 (1.5) | 322 (69.8) | 3 (0.6) | 121 (26.2) | 3 (0.6) | 1 (0.2) | - | 1 (0.2) | |
| (n=461) | D | 377 (81.7) | 58 (12.6) | 12 (2.6) | 7 (1.5) | 3 (0.6) | - | - | - | |
| Three rooted | MB | 6 (100.0) | - | - | - | - | - | - | - | |
| (n=6) | ML | 6 (1 00.0) | - | - | - | - | - | - | - | |
| D | 6 (1 00.0) | - | - | - | - | - | - | - | ||
| Three rooted | M | 1 (10.0) | 5 (50.0) | - | 3 (30.0) | 1 (10.0) | - | - | - | |
| (n=10) | DB | 1 0 (1 00.0) | - | - | - | - | - | - | - | |
| DL | 1 0 (1 00.0) | - | - | - | - | - | - | - | ||
| Mandibular second molars | Single rooted | 3 (27.3) | 7 (63.6) | - | - | - | - | 1 (9.1) | - | |
| (n=11) | ||||||||||
| Two rooted | M | 77 (17.7) | 278 (64.1) | 12 (2.8) | 61 (14.1) | 6 (1.4) | - | - | - | |
| (n=434) | D | 424 (97.7) | 6 (1.4) | - | 2 (0.5) | 2 (0.5) | - | - | - | |
| Three rooted | MB | 6 (100.0) | - | - | - | - | - | - | - | |
| (n=6) | ML | 6 (1 00.0) | - | - | - | - | - | - | - | |
| D | 6 (1 00.0) | - | - | - | - | - | - | - | ||
| Three rooted | M | 3 (15.0) | 11 (55.0) | - | 5 (25.0) | 1 (5.0) | - | - | - | |
| (n=20) | DB | 20 (1 00.0) | - | - | - | - | - | - | - | |
| DL | 20 (1 00.0) | - | - | - | - | - | - | - | ||
D: Distal, DB: Distobuccal, DL: Distolingual, M: Mesial, MB: Mesiobuccal, ML: Mesiolingual