Table 2.
The frequency (%) of the opening direction of mental foramen for gender and mean age in the right and left sides.
| Variables | Superior | Superior-posterior | Labial | Mesial | Posterior | P value |
|---|---|---|---|---|---|---|
| R | ||||||
| Male | 23.8% | 70.2% | 3.6% | 0% | 2.4% | 0.28 |
| Female | 30.2% | 59.4% | 6.3% | 3.1% | 1% | |
| L | ||||||
| Male | 23.8% | 70.2% | 2.4% | 1.2% | 2.4% | 0.15 |
| Female | 36.5% | 55.2% | 2.1% | 5.2% | 1% | |
| R | ||||||
| Mean age | 53.14 (SD ± 13.8) | 47.22 (SD ± 13) | 47.33 (SD ± 18.7) | 48 (SD ± 9.53) | 30.33 (SD ± 17) | 0.02 |
| L | ||||||
| Mean age | 50.73 (SD ± 14.5) | 47.63 (SD = 13.5) | 53 (SD ± 5.7) | 52.50 (SD ± 8.8) | 30.33 (SD ± 17.2) | 0.09 |