Table 3. A. Comparison of the palatal rugae patterns {shape - straight, wavy, curved} in terms of {Mean (SD)} among males and females using unpaired t-test.

	Gender	N	Mean	Std. Deviation	t value	p value
Straight	Male	500	3.51	1.902	0.673	0.501
	Female	500	3.59	1.855
Wavy	Male	500	3.08	1.636	4.443	<0.001**
	Female	500	2.63	1.522
Curved	Male	500	1.80	1.315	1.139	0.255
	Female	500	1.90	1.404