Table 3.

The mean increase (mm) of clinical crown height of lower incisors (gingival recession) after treatment (from TB to TA).

Tooth number	Retroclination (R)		Stable Position (S)		Proclination (P)		p value
	Mean	Std. deviation	Mean	Std. deviation	Mean	Std. deviation
42	0.08	0.48	0.26	0.34	0.17	0.48	0.464NS
41	0.11	0.52	0.25	0.28	0.09	0.37	0.448NS
31	0.14	0.45	0.08	0.51	0.10	0.46	0.903NS
32	0.03	0.42	0.25	0.44	0.20	0.49	0.049∗

NS: not significant, ^∗ p < 0.05.

One-way ANOVA, post hoc Tukey test.