Table 5.
Width of the second molar and retromolar region of 100 samples in different genders.
| Male (N = 50) | Female (N = 50) | t value | p value | |
|---|---|---|---|---|
| Upper 7-7 width | 65.48 ± 2.18 | 62.86 ± 1.86 | -6.44 | 0.000∗∗∗ |
| Lower 7-7 width | 68.67 ± 3.37 | 68.24 ± 3.84 | -0.59 | 0.555 |
| Ratio (U7-7/L7-7) | 0.96 ± 0.06 | 0.92 ± 0.06 | 2.79 | 0.006∗∗ |
| Difference width (U7-7-L7-7) | −3.19 ± 3.19 | −5.38 ± 4.09 | 2.66 | 0.009∗∗ |
| Upper retromolar region width | 64.53 ± 2.38 | 62.23 ± 1.97 | -5.26 | 0.000∗∗∗ |
| Lower retromolar region width | 71.82 ± 4.39 | 71.29 ± 4.06 | -0.62 | 0.536 |
| Width ratio (upper/lower retromolar region) | 0.90 ± 0.07 | 0.88 ± 0.06 | 2.04 | 0.044∗ |
| Difference width (upper-lower retromolar region) | −7.29 ± 5.02 | −9.07 ± 4.68 | 1.83 | 0.071 |
Dependent t-test. Note. Values are mean ± standard deviation. ∗Statistically significant for p < 0.05. ∗∗Statistically significant for p < 0.01. ∗∗∗Statistically significant for p < 0.001.