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The European Journal of Orthodontics 2006 28(5):503-512; doi:10.1093/ejo/cjl009
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© The Author 2006. Published by Oxford University Press on behalf of the European Orthodontic Society. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org.

Long-term follow-up of orthodontically treated deep bite patients

Ulrike Schütz-Fransson*, Krister Bjerklin** and Rune Lindsten**

* Orthodontic Clinic, Mölndal, Sweden
** The Institute for Postgraduate Dental Education, Jönköping, Sweden

Address for correspondenceDr Krister BjerklinDepartment of OrthodonticsThe Institute for Postgraduate Dental EducationPO Box 1030SE-551 11 JönköpingSwedenE-mail: krister.bjerklin{at}lj.se

The aim of this study was to evaluate the long-term stability of corrected deep bite and mandibular anterior crowding in a sample of 62 subjects (30 patients and 32 controls). The patients began treatment at a mean age of 12.2 years (SD 1.56). The treatment consisted of non-extraction and fixed appliances in 23 subjects and functional appliances in seven. The treatment group was compared with the control group with normal molar occlusion, normal overjet and overbite, no crowding, and without an orthodontic treatment need. The registrations were made on four occasions: before treatment (T1), after treatment (T2), and at two long-term follow-ups (T3 and T4). Four registrations were also made in the control group. All measurements were undertaken on plaster models and lateral cephalograms.

 Treatment was found to have normalized the overbite and overjet and to have eliminated the space deficiency in the mandibular anterior region. At T4, there was a minor relapse in overbite in the treatment group (mean 0.8 mm). In the control group, the overbite underwent reverse development (bite opening by 0.7 mm) during the same period. The available mandibular incisor space, however, was –0.9 mm in the treatment group and –1.8 mm in the control group. The long-term stability of the treatment results was thus good.


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