Analysis of the Morphological Characteristics of the Palatal Rugae for Three-Dimensional Superimposition of Digital Models in Korean Subjects

Table 2

Mean number of the primary, secondary, and fragmentary rugae between sexes.

Type of ruga	Men (N = 110)		Women (N = 233)		P value
	Mean	SD	Mean	SD
Primary ruga	3.4	0.7	3.4	0.6	0.838
Secondary ruga	1.1	0.6	1.3	0.6	0.024
Fragmentary ruga	1.0	0.8	1.1	0.7	0.229

SD: standard deviation.