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Progress in Orthodontics
Fig. 2 | Progress in Orthodontics

Fig. 2

From: The effect of space arrangement between anterior teeth on their retraction with clear aligners in first premolar extraction treatment: a finite element study

Fig. 2

The vertical deformations of the clear aligners and the tendency for vertical displacement of the dentition in the groups with different spaces. A The deformation tendency of the aligner without spaces. B The values of minimum movement of the aligner in the vertical direction. C The values of maximum displacement differences of the aligner in the vertical direction. (The maximum displacement difference = maximum movement − minimum movement). D The average vertical movement of the whole dentition. E The tendency for maximum extrusion of the whole dentition in the vertical direction

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