Journal Article

Treatment and post-treatment effects of facemask therapy on the sagittal pharyngeal dimensions in Class III subjects

Tiziano Baccetti, Lorenzo Franchi, Manuela Mucedero and Paola Cozza

in The European Journal of Orthodontics

Published on behalf of European Orthodontics Society

Volume 32, issue 3, pages 346-350
Published in print June 2010 | ISSN: 0141-5387
Published online September 2009 | e-ISSN: 1460-2210 | DOI: http://dx.doi.org/10.1093/ejo/cjp092
Treatment and post-treatment effects of facemask therapy on the sagittal pharyngeal dimensions in Class III subjects

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The purpose of this cephalometric study was to analyse the treatment and post-treatment craniofacial effects of a facemask (FM) combined with a bite block (BB) with specific regard to the sagittal pharyngeal dimensions in subjects with a Class III malocclusion when compared with an untreated Class III control group. The FM/BB group (22 subjects, 12 females and 10 males) had a mean age pre-treatment (T1) of 8.9 ± 1.5 years, at the end of active treatment (T2) of 10.5 ± 1.3 years, and post-treatment (T3) of 12.6 ± 1.9 years. The treated group was compared with a control group of 14 subjects (6 females and 8 males) with untreated Class III malocclusions that matched the FM/BB group as to age at T1, T2, and T3, observation periods and skeletal maturation. Comparisons of the T2−T1 and T3−T1 changes between the two groups were analysed with the Mann–Whitney test.

Significant favourable skeletal changes in the maxilla and mandible were observed in the treated group both after Ts2 and T3. No significant short- or long-term changes in the sagittal oropharyngeal and nasopharyngeal airway dimensions were induced by maxillary protraction in subjects with a Class III malocclusion when compared with untreated controls.

Journal Article.  2608 words.  Illustrated.

Subjects: Restorative Dentistry and Orthodontics

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