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Pharyngeal airway changes in pre-pubertal children with Class II malocclusion after Fršnkel-2 treatment
 

Type:  Articles

Pubblication date:  12/2017

Authors:  G. Fabiani*, J. GalvŠn GalvŠn**, G. Raucci*, M. Elyasi**, C. PachÍco-Pereira***, C. Flores-Mir****, L. Perillo*****

Language:  English

Institution:  *Orthodontic Postgraduate student, Orthodontic Postgraduate Program, Multidisciplinary Department of Medical-Surgical and Dental Specialties, Second University of Naples, Naplesß, Italy **PhD student, Department of Dentistry, University of Alberta, Edmonton, Alberta, Canada ***Assistant Clinical Professor, Department of Dentistry, University of Alberta, Edmonton, Alberta, Canada ****Professor and Chair of the Graduate Orthodontic Program, Department of Dentistry, University of Alberta, Edmonton, Alberta, Canada ***** Professor, Head of Orthodontic Unit and Chair of the Orthodontic Postgraduate Program, Multidisciplinary Department of Medical-Surgical and Dental Specialties, Second University of Naplesß, Naples, Italy

Publication:  European Journal of Paediatic Dentistry

Publisher:  Ariesdue Srl

Keywords:  Fršnkel-2; Functional appliances; Oropharynx; Pharynx; Pre-pubertal; Upper airway dimensional changes.

Email:   letizia.perillo@unicampania.it


Title:  Pharyngeal airway changes in pre-pubertal children with Class II malocclusion after Fršnkel-2 treatment

Abstract:  Aim To evaluate two-dimensional changes in pharyngeal airway dimensions in pre-pubertal children with a Class II malocclusion treated with a Fršnkel-2 appliance compared to a matched non-treated control sample. Materials and Methods Lateral cephalograms obtained from 28 consecutively treated pre-pubertal children before (T0) and after (T1) a one-year Fršnkel-2 treatment were analysed. Fršnkel-2 appliance was used for at least 18 hr/day during 12 months. The control group was matched as closely as possible. All the cases presented normal facial growth pattern. Sagittal and vertical cephalometric measurements assessing maxillary and mandibular skeletal positions, as well as sagittal pharyngeal airway dimensions, were calculated. Intraclass correlation coefficient was calculated in order to determine reliability. Differences based on age for all the outcome variables at T0 were compared with an independent t-test. A MANOVA was used thereafter to determine if any factors and their interactions were associated with changes in the outcome variables. Differences between T1 and T0 were evaluated with either a t-student test or a Mann Whitney U test. Results At T0 differences between groups were noted for several variables. These differences were considered during the follow-up statistical analysis. Changes between groups after treatment (T1-T0) were noted for SNB, PNS to Ba, McNamara Low and Middle to S (increase in treatment group), and ANB and AD1 to Ba (decrease in treatment group). Conclusions Some pharyngeal two-dimensional airway dimensions changed in Class II malocclusion pre-pubertal patients during a one-year treatment with Fršnkel-2 appliances.

 
 
 
 
 
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