Table 4.
Dento-alveolar displacement (mm) after activation of quad-helix and NPE2
| Quad-helix | NPE2 | |||||
|---|---|---|---|---|---|---|
| X | Y | Z | X | Y | Z | |
| Lingual marginal ridge of central incisor | 0.005346 | −0.005947 | 0.008094 | 0.005254 | −0.005312 | 0.00549 |
| Lingual marginal ridge of lateral incisor | 0.006913 | −0.004625 | 0.006239 | 0.006758 | −0.004031 | 0.003674 |
| Lingual marginal ridge of first permanent molar | 0.017585 | −0.000169 | 0.003302 | 0.015673 | −0.000006 | 0.00233 |
| Central incisor cusp tip | 0.003598 | −0.006677 | 0.008102 | 0.003688 | −0.005642 | 0.005067 |
| First permanent molar mesiobuccal cusp tip | 0.021027 | 0.001396 | 0.005404 | 0.020318 | 0.001291 | 0.007759 |
| Erupting canine cusp tip | 0.00872 | 0.001526 | 0.005405 | 0.008523 | 0.002276 | 0.001431 |
| Erupting second molar mesiobuccal cusp tip | 0.01962 | 0.000524 | 0.002048 | 0.017849 | 0.000452 | 0.003237 |
X transverse, Y sagittal Z vertical, + indicates outward, backward and downward displacement