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Progress in Orthodontics
Fig. 3 | Progress in Orthodontics

Fig. 3

From: The predictability of orthodontic tooth movements through clear aligner among first-premolar extraction patients: a multivariate analysis

Fig. 3

Variation of upper incisor movements using different canine and incisor attachments. PR, power ridge used on central incisors; NPR, no power ridge on central incisors; U3 Optimized, optimized attachments used on canines; U3 Vertical, vertical attachments used on canines. Δlingual tipping, Δextrusion and Δretraction indicate difference between actual and designed tooth movement. Tukey’s post hoc test was used for pairwise comparison between groups of different attachments with the same variance

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