Research Article
Morphological Study of Palatal Rugae in a Sudanese Population
Table 2
Descriptive statistics for palatal rugae shapes in both sexes.
| Shape | Males | Females | Chi-square test | Number | % | Mean | SD | Number | % | Mean | SD | Chi-square value | Degree of freedom | value |
| Straight | 160 | 24.06 | 3.20 | 1.69 | 140 | 22.54 | 2.80 | 1.87 | 8.937 | 9 | 0.408 | Curve | 185 | 27.82 | 3.70 | 1.91 | 158 | 25.44 | 3.16 | 1.50 | 10.089 | 8 | 0.229 | Wavy | 184 | 27.67 | 3.68 | 1.56 | 194 | 31.24 | 3.88 | 1.53 | 7.429 | 7 | 0.378 | Circular | 16 | 2.41 | 0.32 | 0.59 | 15 | 2.42 | 0.30 | 0.58 | 0.174 | 2 | 1.000 | Branch | 40 | 6.02 | 0.80 | 0.93 | 35 | 5.64 | 0.70 | 0.74 | 2.133 | 3 | 0.585 | Crosslink | 5 | 0.75 | 0.10 | 0.30 | 9 | 1.45 | 0.18 | 0.39 | 1.329 | 1 | 0.249 | Angular | 30 | 4.51 | 0.60 | 0.81 | 27 | 4.35 | 0.54 | 0.93 | 2.849 | 4 | 0.690 | Nonspecific | 14 | 2.11 | 0.28 | 0.54 | 10 | 1.61 | 0.20 | 0.40 | 1.705 | 2 | 0.601 | Converging | 21 | 3.16 | 0.42 | 0.61 | 16 | 2.58 | 0.32 | 0.55 | 0.840 | 2 | 0.682 | Diverging | 10 | 1.50 | 0.20 | 0.45 | 17 | 2.74 | 0.34 | 0.63 | 2.289 | 3 | 0.659 |
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