Table 2 Deformation of the dental arch width under different protraction degrees
Protraction degree | Anterior arch (mm) | Medial arch (mm) | Posterior arch (mm) |
|---|---|---|---|
−30° | −0.0676 | −0.0547 | −0.0333 |
−20° | −0.0702 | −0.0568 | −0.0342 |
−10° | −0.0745 | −0.0609 | −0.0374 |
0° | −0.0799 | −0.0663 | −0.0424 |
10° | −0.0860 | −0.0728 | −0.0488 |
20° | −0.0928 | −0.0801 | −0.0564 |
30° | −0.1001 | −0.0882 | −0.0652 |
−30°(ex) | 0.0532 | 0.0534 | 0.0480 |
−20°(ex) | 0.0507 | 0.0513 | 0.0468 |
−10°(ex) | 0.0463 | 0.0472 | 0.0447 |
0°(ex) | 0.0398 | 0.0409 | 0.0416 |
10°(ex) | 0.0348 | 0.0353 | 0.0365 |
20°(ex) | 0.0280 | 0.0280 | 0.0289 |
30°(ex) | 0.0208 | 0.0199 | 0.0201 |