Progress in Orthodontics

Table 5 Comparison of our Caucasian tip values with those measured by Andrews

From: Three-dimensional assessment of teeth first-, second- and third-order position in Caucasian and African subjects with ideal occlusion

Caucasians—tip				Andrews’ values			Comparison
	n	Mean	Standard deviation	n	Mean	Standard deviation	t test	p level
TIP U7	60	−3.88	10.60	240	.39	5.69	−3.02	0.004
TIP U6	60	10.26	5.54	240	5.73	1.90	6.24	<0.001
TIP U5	60	9.64	4.16	240	2.82	1.52	12.49	<0.001
TIP U4	60	7.67	4.28	240	2.65	1.69	8.91	<0.001
TIP U3	60	9.96	4.81	240	8.40	2.97	2.40	0.019
TIP U2	60	9.99	3.69	240	8.04	2.80	3.83	<0.001
TIP U1	60	4.53	2.84	240	3.59	1.65	2.46	0.017
TIP L7	60	14.20	6.47	240	2.94	2.05	13.32	<0.001
TIP L6	60	10.99	2.78	240	2.03	1.14	24.47	<0.001
TIP L5	60	6.90	3.09	240	1.54	1.35	13.12	<0.001
TIP L4	60	6.06	3.36	240	1.28	1.90	10.60	<0.001
TIP L3	60	5.913	3.980	240	2.48	3.28	6.18	<0.001
TIP L2	60	.14	4.46	240	.38	1.47	−.41	ns
TIP L1	60	.00	4.46	240	.53	1.29	−.90	ns

ns not significant.

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