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Table 2 Deformation of the dental arch width under different protraction degrees

From: Displacements prediction from 3D finite element model of maxillary protraction with and without rapid maxillary expansion in a patient with unilateral cleft palate and alveolus

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
−0.0799 −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
  1. Negative values if the dental arch width decreased, positive values if the dental arch width increased