Morphological changes of the anterior alveolar bone due to retraction of anterior teeth: a retrospective study

Head & Face Medicine

Table 2 Changes of the anterior alveolar bone width and height before (T0) and after (T1) orthodontic treatment

Alveolar bone	T0	T1	T1-T0		N
	Mean ± SD (mm)	Mean ± SD (mm)	Mean ± SD (mm)	P value	N
ABWL1	1.81 ± 0.39	1.75 ± 0.40	−0.07 ± 0.47	.012*	308
ABWP1	3.24 ± 0.79	2.97 ± 0.80	−0.27 ± 0.88	.000***	308
ABWT1	11.69 ± 1.26	10.71 ± 1.35	− 0.98 ± 1.11	.000***	308
ABHL1	17.70 ± 2.05	18.82 ± 2.34	1.12 ± 1.23	.000***	308
ABHP1	21.52 ± 1.97	21.24 ± 2.16	−0.28 ± 1.22	.000***	308
ABWL2	1.77 ± 0.46	1.76 ± 0.43	−0.01 ± 0.46	.811	154
ABWP2	1.88 ± 0.43	1.51 ± 0.35	−0.37 ± 0.43	.000***	154
ABWT2	8.62 ± 0.87	7.76 ± 0.80	−0.87 ± 0.75	.000***	154
ABHL2	29.05 ± 2.81	28.63 ± 3.35	−0.42 ± 1.74	.003**	154
ABHP2	29.75 ± 2.87	28.60 ± 3.26	−1.15 ± 1.50	.000***	154

†ABWL1, ABWP1, and ABWT1: labial, palatal, and total alveolar width of the upper incisor, respectively; ABWL2, ABWP2, and ABWT2: labial, lingual, and total alveolar width of the lower incisor, respectively. ABHL1 and ABHP1: labial and palatal alveolar bone height of the upper incisor, respectively; ABHL2 and ABHP2: labial and palatal alveolar bone height of the lower incisor, respectively.
‡* P < 0.05; ** P < 0.01; *** P < 0.001.

ISSN: 1746-160X