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Progress in Orthodontics
Fig. 7 | Progress in Orthodontics

Fig. 7

From: The displacement of teeth and stress distribution on periodontal ligament under different upper incisors proclination with clear aligner in cases of extraction: a finite element study

Fig. 7

Vertical and sagittal displacement of incisors in three groups under intrusion force. A–C Vertical displacement of incisors under ST, MT and HT group, the "average" means the average displacement of total incisors, the gray arrow indicates that the total amount of displacement amounted to zero. D–F Sagittal displacement of incisors under ST, MT and HT group

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