de Freitas V, Madeira M C, Toledo Filho J L, Chagas C F
Acta Anat (Basel). 1979;104(3):353-5. doi: 10.1159/000145083.
The absence of the mental foramen was investigated in 1,435 dry human mandibles (2,870 sides). The foramen was absent twice in the right side (0.06%) and once in the left side (0.03%). The meaning of this anatomical variation was commented.