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Orthodontic force loading promotes tooth movement and induces bone formation at tension sites. a Shown are the Micro-CT (scale bar = 1 mm) and HE staining (scale bar = 100 μm) images of the moved tooth. The distance of orthodontic tooth movement (b), BMD (c), BV/TV (d), Tb.Th and Tb.Sp were calculated. n = 5 per group. *P < 0.05, **P < 0.01. n.s No significance
