Table 2 The frequency and percentage of canal system type according to Vertucci’s classification in maxillary first permanent premolars in a sample of Sulaimani population
Canal configurations | Single-rooted (%) | Double-rooted (%) | Three-rooted (e) | Total (%) | ||
|---|---|---|---|---|---|---|
Single-tipped root apex (a) | Double-tipped root apex (b) | Fused two roots (c) | Separate two roots (d) | |||
Type I | 1 (0.70) | 0 | 0 | 0 | 0 | 1 (0.70) |
Type II | 1 (0.70) | 0 | 0 | 0 | 0 | 1 (0.70) |
Type III | 0 | 0 | 0 | 0 | 0 | 0 |
Type IV | 0 | 13 (9.16%) | 24 (16.90) | 63 (44.37) | 0 | 100 (70.43) |
Type V | 0 | 27 (19.01%) | 10 (7.04) | 0 | 0 | 37 (26.05) |
Type VI | 0 | 0 | 0 | 0 | 0 | 0 |
Type VII | 0 | 0 | 0 | 0 | 0 | 0 |
Type VIII | 0 | 0 | 0 | 0 | 3 (2.12) | 3 (2.12) |
Total (%) | 2 (1.40) | 40 (28.17) | 34 (23.94) | 63 (44.37) | 3 (2.12) | 142 (100) |