Table 4.
Percentage reduction of crowding between groups
| Group 1 (conventional NiTi) |
Group 2 (Cu-NiTi) |
Group 3 (SmartArch®) |
P* | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| n | Mean±SD (%) | Median (%) | n | Mean±SD | Median | n | Mean±SD | Median | ||
| T0–T1 | 13 | 46.3±15.35 | 42.86 | 13 | 56.2±18.66 | 54.55 | 13 | 53.53±20.45 | 55.56 | 0.38 |
| T1–T2 | 13 | 70.77±26.53 | 66.67 | 12 | 70.35±25.16 | 66.67 | 13 | 89.51±20.84 | 100 | 0.12 |
| T0–T2 | 13 | 82.07±17.24 | 83.33 | 12 | 85.28±12.68 | 83.33 | 13 | 95.42±7.99 | 100 | 0.07 |
*Kruskal-Wallis test; T0 – at start of treatment, T1 – 4-week follow-up, T2 – 8-week follow up, and T3 – 12-week follow-up