Table 2.

Relative location of the mental foramen to the occlusal plane (Group A: above, Group L: at level, Group B: below the occlusal plane). Bold p values mean statistical difference according to the Pearson chi-square test (p less than 0.05). Minus indicates below the OP and indicates above the OP.

	Total		Right		Left		P value
	Mean (±Std)	%	Mean (±Std)	%	Mean (±Std)	%
Group A	+3.45 (±1.29)	38.43%	+3.12 (±1.27)	41.01%	+3.78 (±1.35)	35.85%	0.16
Group L	N/A	11.34%	N/A	12.17%	N/A	10.51%	0.27
Group B	-4.78 (±1.28)	50.23%	-4.56 (±1.34)	49.25%	-5.01(±1.13)	51.21%	0.08
P value		0.001		0.002		0.001