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Fig. 4 | BMC Oral Health

Fig. 4

From: Effects of upper-molar distalization using clear aligners in combination with Class II elastics: a three-dimensional finite element analysis

Fig. 4

The movement tendency of the mandibular dentition in models with Class II elastics. The coordinate system was specified based on the entire dentition (global coordinate system). As shown by the arrows, with the combination of Class II elastic, the mandibular dentition of models B and C moved forward with a little extrusion tendency of molars and intrusion of anterior teeth

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BMC Oral Health

ISSN: 1472-6831

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