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. 2018 Jul 15;2018:7641908. doi: 10.1155/2018/7641908

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.