Table 2. Distribution of the root canal system configuration of the mesial root of maxillary first permanent molar teeth of Caucasians based on Vertucci’s classification.
| Percentages for types I-V | ||||||
| Investigators | Teeth | I | II | III | IV | V |
|
Pomeranz & Fishelberg (7) |
71 |
72.0 |
17.0 |
0 |
11.0 |
0 |
| Pineda & Kuttler(8) | 262 | 39.3 | 12.2 | 0 | 35.7 | 12.7 |
| Pineda(4) | 245 | 41.0 | 17.0 | 0 | 42.0 | 0 |
| Green(3) | 100 | 64.0 | 22.0 | 0 | 14.0 | 0 |
| Seidberg et al.(9) | 100 | 38.0 | 37.0 | 0 | 25.0 | 0 |
| Vertucci (6) | 100 | 45.0 | 37.0 | 0 | 18.0 | 0 |