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. 2015 Nov 2;2015:124635. doi: 10.1155/2015/124635

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