|  | Fixed appliances (Mean ± SD) | Clear aligners (Mean ± SD) | p value |
---|---|---|---|---|
Bone Thickness | ||||
Central incisors | Labial |  − 0.03 ± 0.70 | 0.09 ± 0.49 | 0.714b |
Palatal | 0.47 ± 0.99 | 0.02 ± 1.09 | 0.000b*** | |
Total | 0.22 ± 0.89 | 0.05 ± 0.85 | 0.004b** | |
lateral incisors | Labial | 0.05 ± 0.55 | 0.18 ± 0.43 | 0.095b |
Palatal | 0.32 ± 0.90 |  − 0.33 ± 1.18 | 0.000b*** | |
Total | 0.18 ± 0.76 |  − 0.08 ± 0.92 | 0.001b** | |
Total | 0.20 ± 0.82 |  − 0.01 ± 0.89 | 0.000b*** | |
Bone height | ||||
Central incisors | Labial | 0.92 ± 1.36 | 0.90 ± 2.33 | 0.160b |
Palatal | 1.83 ± 1.65 | 0.69 ± 1.50 | 0.419b | |
Lateral incisors | Labial | 0.85 ± 1.22 | 2.01 ± 3.21 | 0.504b |
Palatal | 1.03 ± 1.97 | 0.45 ± 1.90 | 0.381b | |
Root Resorption | ||||
Central incisors | 0.68 ± 0.97 | 0.28 ± 0.26 | 0.016b* | |
Lateral incisors | 0.55 ± 0.54 | 0.35 ± 0.53 | 0.010b* | |
Average | 0.62 ± 0.78 | 0.31 ± 0.42 | 0.000b*** | |
Inclination | ||||
UI-PP |  − 1.23 ± 8.07 | 4.52 ± 8.03 | 0.030a* |