Table 1.
Mean±standard deviation values of surface roughness, nanohardness and elastic modulus of different group of archwires (*P<0.05)
| Properties | Arch wires | Mean±SD | Minimum | Maximum | P |
|---|---|---|---|---|---|
| Surface roughness | Control | 0.293±0.007 | 0.283 | 0.302 | 0.000* |
| Epoxy | 1.517±0.071 | 1.421 | 1.586 | ||
| Rhodium | 0.297±0.015 | 0.274 | 0.312 | ||
| Teflon | 0.857±0.014 | 0.841 | 0.875 | ||
| Nano-hardness | Control | 3.249±0.384 | 2.870 | 3.770 | 0.000* |
| Epoxy | 0.143±0.100 | 0.018 | 0.228 | ||
| Rhodium | 0.186±0.037 | 0.121 | 0.207 | ||
| Teflon | 0.168±0.032 | 0.126 | 0.196 | ||
| Elastic modulus | Control | 56.413±4.593 | 51.315 | 60.854 | 0.000* |
| Epoxy | 4.409±2.109 | 2.165 | 7.587 | ||
| Rhodium | 5.063±0.448 | 4.293 | 5.435 | ||
| Teflon | 5.345±0.508 | 4.739 | 5.965 |
*P<0.05. SD=Standard deviation