Table 2.
Root canal morphology of maxillary second premolars in various studies
| Reference | No. of teeth | Type of study | Canal Types |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|
| I (%) | II (%) | III (%) | IV (%) | V (%) | VI (%) | VII (%) | VIII (%) | |||
| Vertucci[3] (USA) 100 Clearing | 100 | Clearing | 48 | 22 | 5 | 11 | 6 | 5 | 2 | 1 |
| Caliskan et al.[13] (Turkey) | 100 | Clearing | 44 | 22 | 6 | 12 | 6 | 6 | 4 | - |
| Kartal et al.[11] | 300 | Clearing | 48.6 | 6.3 | - | 37.99 | 4 | 0.6 | - | - |
| Sert and Bayirili[7] (Turkey) | 200 | Clearing | 32 | 20 | 10 | 25.5 | 6 | 1.5 | 3 | 1.5 |
| Weng et al.[10] (China) | 100 | Clearing | 27.7 | 36.9 | - | 33.8 | - | 1.6 | - | - |
| Present study (2010) (India) | 200 | Clearing | 29.2 | 33.6 | 1.3 | 31.1 | 2.1 | 1.2 | 1 | - |