Cephalometric Sagittal Changes Suggestive of Maxillary Anterior Displacement and Mandibular Immediate Shift Following 3D-Guided Midpalatal Piezocorticotomy-Assisted MARPE in Adults: A Retrospective Cohort Study.

Among the evaluated covariates, baseline sagittal jaw relationship (ANB) emerged as a highly significant independent predictor (beta = 0.36, 95%CI: 0.151 to 0.573, p = 0.001), indicating that patients presenting with more severe initial sagittal discrepancies experienced a greater magnitude of forward maxillary change.

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This near-significant threshold highlights a direct dose–response relationship, indicating that greater absolute activation of the expansion appliance yields a corresponding volumetric and spatial advancement of point A.

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