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Dento-skeletal effects of mixed palatal expansion evaluated by postero-anterior cephalometric analysis

Type:  Case studies

Pubblication date:  /1/2014

Authors:  V. Grassia, F. D’Apuzzo, V. E. Ferrulli, G. Matarese*, F. Femiano, L. Perillo

Language:  English

Institution:  Department of Orthodontics, Second University of Naples, Italy *Department of Orthodontics, University of Messina,

Publication:  European Journal of Paediatic Dentistry

Publisher:  Ariesdue Srl

Keywords:  Mixed palatal expansion; Posterior crossbite; Transverse dimension.

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Email:  [email protected])

Title:  Dento-skeletal effects of mixed palatal expansion evaluated by postero-anterior cephalometric analysis

Abstract:  Aim The aim of this study was to evaluate the dento-skeletal effects of mixed palatal expansion (MPE) on growing patients with a uni- or bilateral posterior crossbite and mild-to-moderate crowding as compared to untreated growing individuals using postero-anterior (PA) cephalometric analysis. Materials and methods A group of 24 patients (18 girls and 6 boys) treated with a Hyrax-type device was compared to an untreated matched control group at T0 (8.6 yrs ± 2.01) and T1 (10 yrs ± 2.00) using PA cephalograms. The cephalometric analysis included eight bilateral skeletal and dental landmarks. The groups were compared using independent sample t-test to estimate dento-skeletal effects on PA cephalograms. Results The treated group showed significant changes for the maxillary width (P<0.001) and upper molar width (P<0.001) when compared to those of the control group. Conclusion MPE may effectively increase transverse dimensions and correct posterior crossbites.

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