From: Tooth alignment and pain experience with A-NiTi versus Cu-NiTi: a randomized clinical trial
Time | Study group irregularity index | P value* | Test statistic | |
---|---|---|---|---|
A-NiTi mean (SD) | Cu-NiTi mean (SD) | |||
Before treatment | 8.73 (2.22) | 8.34 (2.15) | 0.395 | 0.855 |
After treatment | 6.17 (1.82) | 5.47 (1.69) | 0.065 | 1.87 |
P value** | < 0.001 | < 0.001 | ||
Test statistic | 13.17 | 13.78 | ||
Change in irregularity index (mm) | 2.56 | 2.87 |