Table 2. Classification of maxillary second premolar according to numbers of roots and canals per root.
| Maxillary 2. Premolar |
Single root
|
Two rooted
|
Three rooted
|
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type |
Right
|
Left
|
Total |
Right
|
Left
|
Total |
Right
|
Left
|
Total | ||||||
| F (%) | M (%) | F (%) | M (%) | F (%) | M (%) | F (%) | M (%) | F (%) | M (%) | F (%) | M (%) | ||||
|
One canal at apex
| |||||||||||||||
| Type I | 62 (13.9) | 51 (11.4) | 53 (11.9) | 54 (12.1) | 220 (49.4) | — | — | — | — | — | — | — | — | — | — |
| Type II | 36 (8) | 24 (5.3) | 38 (8.5) | 26 (5.8) | 124 (27.8) | — | — | — | — | — | — | — | — | — | — |
| Type III | — | 5 (1.1) | — | 3 (0.6) | 8 (1.7) | — | — | — | — | — | — | — | — | — | — |
|
Two canals at apex
| |||||||||||||||
| Type IV | 10 (2.2) | 17 (3.8) | 11 (2.4) | 9 (2) | 47 (10.5) | 9 (2) | 10 (2.2) | 9 (2) | 6 (1.3) | 34 (7.6) | — | — | — | — | — |
| Type V | 2 (0.4) | 2 (0.4) | 5 (1.1) | — | 9 (2) | — | — | — | — | — | — | — | — | — | — |
| Type VI | 1 (0.2) | — | — | — | 1 (0.2) | — | — | — | — | — | — | — | — | — | — |
| Three canals at apex | — | — | — | — | — | — | — | — | — | — | — | 1 (0.2) | — | 1 (0.2) | 2 (0.4) |
Abbreviations: F, female; M, male.