Shape Male Female
Right Left P-value Right Left P-value
N (%) N (%) N (%) N (%)
Uniformly circular 20 (11.6) 26 (15) 0.728a 13 (8.8) 18 (12.2) 0.177a
Irregular 54 (31.2) 65 (37.6) 47 (32) 44 (29.9)
Ovoid 99 (57.2) 82 (47.4) 87 (59.2) 85 (57.9)
Total 173 (100) 173 (100) 147 (100) 147 (100)

aNo statistically significant association at the level P < 0.05, Chi-square test.
N = number of mental foramen observed.