Fig. 3From: The effect of enhanced structure in the posterior segment of clear aligners during anterior retraction: a three-dimensional finite element and experimental model analysisF, M and d in the mesial-distal direction of the maxillary dentition: A, Fx and Mx of the finite element model; B, Fx and Mx of the experimental model (*P < 0.05, **P < 0.01); C, d of the finite element modelBack to article page