Table 5: ICP-MS results demonstrating the Ni content released into the AS solutions used in the experiments.(The possible ion release from the ligatures on the brackets were considered as a part of the ion release from the brackets).
| Sample | Ni (μg/L) release into the AS solution |
| Undeformed archwire (UA) | 0.750 ± 0.150 |
| Dental model with only brackets bonded on (B) | 15.234 ± 1.054 |
| Dental model both with brackets bonded on and archwire bound on the brackets (BA) | 26.539 ± 2.517 |