Table 1.
Comparison of the mean tooth size, the mean anterior, and overall Bolton's ratio between male and female subjects by two-sample t-test.
| Tooth | Male | Female | Mean Difference |
SE of Mean Difference |
95% Confidence Interval | P value | |||
|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Lower | Upper | ||||
| Maxillary | |||||||||
| T16 | 10.7 | 0.6 | 10.3 | 0.5 | 0.4 | 0.08 | 0.25 | 0.56 | <0.001∗ |
| T15 | 7.3 | 0.4 | 7.0 | 0.4 | 0.2 | 0.06 | 0.10 | 0.32 | <0.001∗ |
| T14 | 7.7 | 0.4 | 7.5 | 0.4 | 0.2 | 0.06 | 0.10 | 0.34 | <0.001∗ |
| T13 | 8.4 | 0.5 | 8.0 | 0.5 | 0.4 | 0.07 | 0.26 | 0.53 | <0.001∗ |
| T12 | 7.3 | 0.5 | 7.2 | 0.6 | 0.2 | 0.08 | 0.00 | 0.30 | 0.05 |
| T11 | 8.7 | 0.5 | 8.5 | 0.5 | 0.2 | 0.07 | 0.08 | 0.36 | 0.003∗ |
| T21 | 8.7 | 0.5 | 8.5 | 0.5 | 0.2 | 0.07 | 0.03 | 0.31 | 0.02∗ |
| T22 | 7.3 | 0.5 | 7.1 | 0.5 | 0.1 | 0.07 | 0.00 | 0.29 | 0.054 |
| T23 | 8.3 | 0.5 | 7.9 | 0.5 | 0.3 | 0.06 | 0.22 | 0.47 | <0.001∗ |
| T24 | 7.8 | 0.4 | 7.5 | 0.4 | 0.2 | 0.06 | 0.10 | 0.34 | <0.001∗ |
| T25 | 7.2 | 0.4 | 7.0 | 0.4 | 0.2 | 0.06 | 0.09 | 0.32 | <0.001∗ |
| T26 | 10.7 | 0.5 | 10.3 | 0.5 | 0.4 | 0.08 | 0.25 | 0.56 | <0.001∗ |
| Mandibular | |||||||||
| T36 | 11.4 | 0.5 | 11.0 | 0.6 | 0.4 | 0.08 | 0.25 | 0.55 | <0.001∗ |
| T35 | 7.5 | 0.5 | 7.3 | 0.5 | 0.2 | 0.07 | 0.08 | 0.36 | 0.002∗ |
| T34 | 7.6 | 0.4 | 7.4 | 0.4 | 0.2 | 0.06 | 0.04 | 0.28 | 0.01∗ |
| T33 | 7.2 | 0.4 | 6.9 | 0.4 | 0.3 | 0.06 | 0.21 | 0.44 | <0.001∗ |
| T32 | 6.1 | 0.4 | 6.0 | 0.4 | 0.1 | 0.05 | -0.02 | 0.19 | 0.11 |
| T31 | 5.5 | 0.4 | 5.4 | 0.4 | 0.1 | 0.05 | -0.03 | 0.17 | 0.157 |
| T41 | 5.5 | 0.4 | 5.4 | 0.4 | 0.1 | 0.05 | -0.01 | 0.19 | 0.073 |
| T42 | 6.1 | 0.4 | 6.0 | 0.4 | 0.1 | 0.05 | 0.02 | 0.22 | 0.022∗ |
| T43 | 7.2 | 0.4 | 6.8 | 0.4 | 0.4 | 0.06 | 0.28 | 0.50 | <0.001∗ |
| T44 | 7.6 | 0.4 | 7.4 | 0.4 | 0.2 | 0.06 | 0.06 | 0.29 | 0.004∗ |
| T45 | 7.5 | 0.5 | 7.3 | 0.5 | 0.2 | 0.07 | 0.06 | 0.33 | 0.004∗ |
| T46 | 11.4 | 0.6 | 11.0 | 0.6 | 0.4 | 0.08 | 0.24 | 0.55 | <0.001∗ |
| Anterior ratio | 77.04 | 1.86 | 77.03 | 1.86 | 0.01 | 0.26 | -0.51 | 0.52 | 0.987 |
| Overall ratio | 90.48 | 1.79 | 90.65 | 1.60 | 0.17 | 0.24 | -0.64 | 0.31 | 0.486 |
∗P < 0.05; SD = standard deviation; SE = standard error.