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 | ||
| 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.