Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Root canal morphologies of mandibular premolars
| Vertucci classification, n (%) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| I | II | III | IV | V | VI | VII | VIII | Additional | Others | C-shape | |||
| 1–1 | 2–1 | 1–2-1 | 2 | 1–2 | 2–1-2 | 1–2–1-2 | 3 | 2–3 | 3–2 | ||||
| Mandibular first premolar (n = 971) | 765 (78.78) | 22 (2.27) | 31 (3.19) | 4 (0.41) | 106 (10.92) | 0 (0) | 1 (0.1) | 0 (0) | 1 (0.1) | 5 (0.51) | 36 (3.71) | ||
| C-shape (n = 36) | – | – | 5 (13.9) | – | 28 (77.8) | – | – | – | 3 (8.3) | ||||
| Mandibular second premolar (n = 997) | 981 (98.4) | 14 (1.4) | 2 (0.2) | – | – | – | – | – | – | ||||
