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Three-dimensional finite element model. A, Landmarks for the assessment of displacement; B, location of the miniscrew. Dots indicate points for (mesiobuccal) cusp tips/middle incisal edge or mesial root apices. Miniscrew position was simulated at 8 mm above the main archwire, at the contact point portion between the 2nd premolar and 1st molar. C.I., central incisor; L.I., lateral incisor; C, canine; PM1, 1st premolar; PM2, 2nd premolar; M1, 1st molar; M2, 2nd molar.
