Three-dimensional analysis of dental arch forms in Italian population

Progress in Orthodontics

Table 2 Mandible and maxilla T test between male and female

	Male (n = 35)		Female (n = 69)		Significance (P)
	Mean	SD	Mean	SD	(T test)
Maxilla
Sup. ang. 1^a	123.76	7.81	127.65	9.85	0.031*
Sup. ang. 2d^a	133.14	4.40	130.42	7.17	0.099
Sup. ang. 2s^a	133.93	6.06	131.59	6.55	0.118
Sup. ang. 3d^a	74.62	3.15	75.58	4.33	0.239
Sup. ang. 3s^a	74.59	2.89	74.94	3.72	0.679
Interpremolar distance^b	38.70	2.01	36.39	2.18	0.000*
Intercanine distance^b	34.43	1.87	32.66	2.08	0.000*
Intermolar distance^b	47.41	2.76	44.28	2.51	0.000*
Intercanine-intermolar distance ratio	0.73	0.03	0.74	0.07	0.389
Arch depth^b	32.76	2.05	30.86	2.51	0.000*
Mandible
Inf. ang. 1^a	137.04	12.02	137.91	12.51	0.626
Inf. ang. 2d^a	131.45	9.43	130.47	9.63	0.479
Inf. ang. 2s^a	130.68	8.24	130.46	8.16	0.854
Inf. ang. 3d^a	69.94	2.65	70.80	4.17	0.146
Inf. ang. 3s^a	70.18	3.41	69.90	3.30	0.561
Interpremolar distance^b	30.93	1.76	29.91	2.07	0.000*
Intercanine distance^b	26.13	1.59	25.45	1.84	0.010*
Intermolar distance^b	42.59	2.39	41.17	2.48	0.000*
Intercanine-intermolar distance ratio	0.61	0.04	0.62	0.04	0.439
Arch depth^b	27.81	2.66	27.00	2.33	0.014*