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Early treatment of Class III malocclusion with RME and facial mask: evaluation of dentoalveolar effects on digital dental casts
 

Type:  Articles

Pubblication date:  09/2015

Authors:  R. Lione*, M. Buongiorno**, G. Laganŕ*, P. Cozza***, L. Franchi****

Language:  English

Institution:  *Research Fellow, Department of Clinical Sciences and Translational Medicine, University of Rome “Tor Vergata”, Rome, Italy **Research Fellow, Department of Surgery and Translational Medicine, University of Florence, Italy ***Professor and Department Chair, Department of Clinical Sciences and Translational Medicine, University of Rome “Tor Vergata”, Rome, Italy ****Assistant Professor, Department of Surgery and Translational Medicine, University of Florence, Florence, Italy

Publication:  European Journal of Paediatic Dentistry

Publisher:  Ariesdue Srl

Keywords:  Class III malocclusion; Dental effects; Digital dental casts; Early treatment.

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Title:  Early treatment of Class III malocclusion with RME and facial mask: evaluation of dentoalveolar effects on digital dental casts

Abstract:  Aim To analyse the dental effects on digital dental casts in subjects with Class III malocclusion treated with bonded Rapid Maxillary Expansion and Facial Mask (RME/FM). Materials and methods A study group sample (SG) of 29 subjects (13 females and 16 males) and mean age of 7.4 years (SD 1.2 years) was selected. A bonded RME was placed and activated 1/4 of a turn per day until overcorrection of the transverse width. At the end of expansion, patients were given FMs and treated at least to a positive overjet. The SG was compared with a control group (CG) of 21 prepubertal subjects (9 females; 12 males) presenting with normal occlusion and mean age of 7.9 years (SD 1.6 years). For each subject of the SG and CG initial (pretreatment, T1) and final (post-treatment, T2) digital dental casts were available. Significant in between-group differences were tested with the Student’s t-test. Results The transverse dimension of the upper arch was significantly greater in SG vs. CG (IMAW: +2.6 mm; ICAW: +3.1 mm). Anterior arch length and arch depth were significantly smaller in SG when compared with CG (AAL: -3.2 mm, AD: -3.4 mm) at the end of therapy. Conclusion The orthopaedic treatment with bonded RME/FM produced in subjects treated in the deciduous or early mixed dentition a significant expansion of the maxillary arch and mesialisation of the posterior teeth with a reduction of the arch depth.

 
 
 
 
 
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