Morphological Study of Palatal Rugae in a Sudanese Population

Table 3

Descriptive statistics for palatal rugae directions in both sexes.

Direction	Males				Females				Mann-Whitney test
	Number	%	Mean	SD	Number	%	Mean	SD		value
Forward	389	58.50	7.78	3.16	319	51.37	6.38	2.59	949.500	0.037
Backward	231	34.74	4.62	2.57	247	39.77	4.94	2.65	1158.500	0.525
Perpendicular	45	6.77	0.90	1.18	55	8.86	1.10	1.25	1109.000	0.301