Table 1.
Number and percentage of roots and canals in the mandibular first premolars for the two genders
| No. | Root | Canal | |||
|---|---|---|---|---|---|
|
|
|
||||
| n | % | n | % | ||
| Male | 1 | 96 | 96 | 92 | 92 |
| 2 | 4 | 4 | 8 | 8 | |
| Female | 1 | 91 | 91 | 80 | 80 |
| 2 | 9 | 9 | 20 | 20 | |
| χ 2 | 2.0568 | 5.9801 | |||
| P | 0.151531 | 0.014468 | |||
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