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The European Journal of Orthodontics Advance Access originally published online on August 25, 2008
The European Journal of Orthodontics 2008 30(5):477-482; doi:10.1093/ejo/cjn039
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© The Author 2008. Published by Oxford University Press on behalf of the European Orthodontic Society. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org.

Cephalometric evaluation of Class II malocclusion treatment with cervical headgear and mandibular fixed appliances

M. R. Freitas, D. V. Lima, K. M. S. Freitas, G. Janson and J. F. C. Henriques

Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, SP, Brazil

Address for correspondence Dr Karina Maria Salvatore Freitas, Department of Orthodontics, Bauru Dental School, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru SP 17012-901, Brazil, E-mail: kmsf{at}uol.com.br


  Abstract

The present study aimed to evaluate the cephalometric changes in Class II patients treated exclusively with cervical headgear (CHG) in the maxillary arch and fixed appliances in the mandibular arch as compared with a control group. The sample comprised 82 lateral cephalograms obtained pre- (T1) and post- (T2) treatment/observation of 41 subjects, divided into two groups: group 1—25 Class II division 1 patients (20 females and five males), with a mean pre-treatment age of 10.4 years, treated for a mean period of 2.5 years and group 2—16 Class II untreated subjects (12 females and four males), with a mean initial age of 9.9 years, followed for a mean period of 2.2 years. Treatment changes between the groups were compared by means of t-tests.

The results showed restriction of maxillary forward displacement and also a restriction in maxillary length growth, improvement in the maxillomandibular relationship, restriction of mandibular incisor vertical development, reduction in overjet and overbite, and improvement in molar relationship. It was concluded that this treatment protocol corrected the Class II malocclusion characteristics primarily through maxillary forward growth restriction.


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