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Orthopaedic treatment efficiency in skeletal Class III malocclusions in young patients: RME-face mask versus TSME

Type:  Articles

Pubblication date:  09/2012

Authors:  C. Maspero, G. Galbiati, L. Perillo*, L. Favero**, L. Giannini

Language:  English

Institution:  Fondazione IRCCS Cą, Granda - Ospedale Maggiore Policlinico, Department of Orthodontics, University of Milan, Italy *Department of Orthodontics, Seconda Universitą di Neaples **University of Padua, Italy

Publication:  European Journal of Paediatic Dentistry

Publisher:  Ariesdue Srl

Keywords:  Facemask therapy; TSME; RME.

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Email:  [email protected]

Title:  Orthopaedic treatment efficiency in skeletal Class III malocclusions in young patients: RME-face mask versus TSME

Abstract:  Aim To cephalometrically compare the skeletal vertical and sagittal effects of TSME with those of RME protraction facemask therapy in Class III patients. Materials and methods The sample of this retrospective study included 104 patients (53 females, 51 males) with age ranging from 5 to 9 years, presenting a skeletal Class III relationship: 52 were treated with transverse sagittal maxillary expander (TSME) appliance (Group 1) and 52 with Hyrax rapid maxillary expander/facemask (RME/FM, Group 2). For each patient a lateral cephalogram was obtained before treatment (T0) and at the end of the retention period (T1). Changes in the two groups during the observation period were calculated, compared and statistically analysed with t-test. Results TSME can produce skeletal changes and dento-alveolar modifications. RME in association with protraction facemask showed that after treatment the maxilla was moved significantly forward. The correction of the ANB angle was due to a change in mandibular position during treatment which showed a backward and downward rotation. Conclusion Both devices were effective in the treatment of subjects with skeletal Class III due to maxillary retrusion.

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