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Fig. 2 | Progress in Orthodontics

Fig. 2

From: Alveolar bone remodeling during maxillary incisor intrusion and retraction

Fig. 2

Reference lines used to determine the extent of intrusion and retraction of the incisor. Difference in the distance from incisor tip to Frankfort plane at pre-treatment and post-treatment (V0–V1) represents the amount of intrusion of incisor. Difference in the distance from incisor tip to N-perpendicular line at pretreatment and posttreatment (H0–H1) represents the amount of retraction of incisor

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