Table 4 The degree of root resorption (mm) between T1 and T2 for the patients in conventional preadjusted brackets group
Measurements, mm | T1 | T2 | ||||
|---|---|---|---|---|---|---|
Mean | SD | Mean | SD | T2–T1 | P | |
Maxillary right central incisor | 25.26 | 1.26 | 24.86 | 1.18 | −0.40 | 0.002 |
Maxillary right lateral incisor | 24.52 | 1.32 | 24.17 | 1.29 | −0.30 | 0.007 |
Maxillary left central incisor | 25.22 | 1.52 | 24.83 | 1.24 | −0.39 | 0.001 |
Maxillary left lateral incisor | 24.54 | 1.26 | 24.23 | 1.35 | −0.31 | 0.005 |