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Distribution of mandibular premolars according to number of roots
| Number of roots | Left 1st PM | Left 2nd PM | Right 1st PM | Right 2nd PM | Overall n (%) |
|---|---|---|---|---|---|
| One root | 299 | 283 | 298 | 287 | 1167 (94.87) |
| Two roots | 24 | 3 | 24 | 1 | 52 (4.22) |
| Three roots | 0 | 3 | 0 | 3 | 6 (0.48) |
| C-shaped | 0 | 3 | 0 | 2 | 5 (0.40) |
| Total | 323 | 292 | 322 | 293 | 1230 (100) |
PM- premolars
