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Progress in Orthodontics
Fig. 4 | Progress in Orthodontics

Fig. 4

From: Effective contribution ratio of the molar during sequential distalization using clear aligners and micro-implant anchorage: a finite element study

Fig. 4

Total displacement of the maxillary dentition. Set I, initial distalization of the 2nd molar; set II, initial distalization of the 1st molar. Model A, control model without anchorage reinforcement; model B, microimplants attached to the tooth by precision cuts; model C, microimplants attached to the aligner by a button. Vector diagrams from the lateral and occlusal views show the displacement direction of the whole maxillary dentition. Histograms display the total displacement values of different models in two group sets with various traction forces (mm). The coordinate system was based on the entire dentition (global coordinate system). The x-axis represents the coronal plane (+ left, − right), the y-axis represents the sagittal plane (+ posterior, − anterior), and the z-axis represents the vertical plane (+ superior, − inferior)

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