Skip to main content
Progress in Orthodontics
Fig. 2 | Progress in Orthodontics

Fig. 2

From: Influence of maxillary molar distalization with clear aligners on three-dimensional direction: molar distal movement, intrusion, distal tip and crown buccal torque

Fig. 2

Measurement of maxillary molar linear movement after distalization. A The three-dimensional coordinate system was developed according to the morphology of the target teeth. B The center of the aimed molar (pretreatment) was constructed by selecting the region of the teeth. C The center of the target molar (after distalization) was constructed by selecting the region of the teeth. D The distance between the two mass centers was projected to the three-dimensional coordinate system of the target teeth and measured. The mesial–distal movement was obtained after projecting the distance to the Y-axis, i.e., the actual distal movement. E The distance between the two mass centers was projected to the three-dimensional coordinate system of the target teeth and measured. The vertical linear movement was obtained after projecting the distance to the Z-axis, i.e., the actual intrusion

Back to article page