Fig. 2From: The effect of maxillary molar distalization with clear aligner: a 4D finite-element study with staging simulationThe automatic clear aligner morphology changing method based on the temperature changing method. Ci–Cj, the center point of dental crowns at occlusion view; Pi–Pj, the margin points of dental crowns on the line of Ci–Cj; Pc, the center point of Pi–PjBack to article page