A Comparative Analysis of Tooth Size Discrepancy between Male and Female Subjects Presenting with a Class I Malocclusion

Table 2

Comparison of antimetric tooth size within the same gender by paired t-test.

Tooth pair	Mean	SD	95% Confidence Interval		Cohen’s d Effect size	Clinical significance
	difference		Lower	Upper
Male
T16-T26	0.01	0.34	-0.06	0.07	0.01	< 0.2
T15-T25	0.03	0.22	-0.01	0.08	0.14	< 0.2
T14-T24	0.02	0.18	-0.05	0.02	0.08	< 0.2
T13-T23	0.10	0.26	0.05	0.15	0.39	> 0.2
T12-T22	0.05	0.21	0.01	0.09	0.24	> 0.2
T11-T21	0.06	0.20	0.02	0.10	0.29	> 0.2
T36-T46	0.00	0.26	-0.05	0.06	0.01	< 0.2
T35-T45	0.04	0.24	-0.01	0.08	0.16	< 0.2
T34-T44	0.01	0.21	-0.05	0.04	0.03	< 0.2
T33-T43	0.01	0.21	-0.06	0.03	0.07	< 0.2
T32-T42	0.02	0.17	-0.02	0.05	0.11	< 0.2
T31-T41	0.01	0.17	-0.03	0.04	0.04	< 0.2
Female
T16-T26	0.00	0.23	-0.04	0.05	0.01	< 0.2
T15-T25	0.03	0.20	-0.01	0.07	0.14	< 0.2
T14-T24	0.02	0.22	-0.06	0.03	0.08	< 0.2
T13-T23	0.05	0.27	-0.01	0.10	0.18	< 0.2
T12-T22	0.05	0.25	-0.01	0.10	0.18	< 0.2
T11-T21	0.01	0.16	-0.02	0.04	0.07	< 0.2
T36-T46	0.00	0.24	-0.04	0.05	0.02	< 0.2
T35-T45	0.01	0.27	-0.04	0.06	0.03	< 0.2
T34-T44	0.01	0.23	-0.04	0.06	0.04	< 0.2
T33-T43	0.05	0.20	0.01	0.09	0.25	> 0.2
T32-T42	0.05	0.17	0.02	0.09	0.31	> 0.2
T31-T41	0.03	0.15	0.00	0.06	0.19	< 0.2

Cohen's d > 0.2 = clinical significance; SD = standard deviation.