<abstract xmlns="http://www.w3.org/1999/xhtml">

<italic>Objective:</italic> To compare and analyse the effects of activator and Forsus FRD EZ appliances in the treatment of skeletal Class II division I malocclusion.
<italic>Methods:</italic> Lateral cephalograms and hand-wrist radiographs were collected from 24 Class II division I growing patients (14 females, 10 males). The patients were randomly divided into two equal groups and either treated with an activator appliance (Mean age 12.67 ± 1.24 years) or with a Forsus FRD EZ appliance (Mean age 12.31 ± 1.09 years). Pretreatment and post-treatment cephalometric radiographs were obtained, traced, superimposed and data analysed using paired <italic>t</italic>-tests and the Wilcoxon signed rank test.
<italic>Results:</italic> The results demonstrated that the Forsus FRD EZ effectively corrected the Class II malocclusion, but the changes were mainly dentoalveolar. The Forsus FRD EZ appliance induced a clockwise rotation of the occlusal plane without significant alteration in the vertical facial dimension. Skeletally, maxillary growth was restricted and pogonion moved forward which improved the profile.
<italic>Conclusion:</italic> The Forsus FRD EZ appliance may be an effective dentoalveolar treatment method to manage a skeletal imbalance and improve the profile in growing patients.
</abstract>

Objective: To compare and analyse the effects of activator and Forsus FRD EZ appliances in the treatment of skeletal Class II division I malocclusion.
Methods: Lateral cephalograms and hand-wrist radiographs were collected from 24 Class II division I growing patients (14 females, 10 males). The patients were randomly divided into two equal groups and either treated with an activator appliance (Mean age 12.67 ± 1.24 years) or with a Forsus FRD EZ appliance (Mean age 12.31 ± 1.09 years). Pretreatment and post-treatment cephalometric radiographs were obtained, traced, superimposed and data analysed using paired t-tests and the Wilcoxon signed rank test.
Results: The results demonstrated that the Forsus FRD EZ effectively corrected the Class II malocclusion, but the changes were mainly dentoalveolar. The Forsus FRD EZ appliance induced a clockwise rotation of the occlusal plane without significant alteration in the vertical facial dimension. Skeletally, maxillary growth was restricted and pogonion moved forward which improved the profile.
Conclusion: The Forsus FRD EZ appliance may be an effective dentoalveolar treatment method to manage a skeletal imbalance and improve the profile in growing patients.

Comparison of the effects of fixed and removable functional appliances on the skeletal and dentoalveolar structures

Faculty of Dentistry Department of Orthodontics

Australasian Orthodontic Journal

This work is licensed under the Creative Commons Attribution 4.0 International License.

Objective: To compare and analyse the effects of activator and Forsus FRD EZ appliances in the treatment of skeletal Class II division I malocclusion.
Methods:...

Comparison of the effects of fixed and removable functional appliances on the skeletal and dentoalveolar structures

Publié en ligne: 01 août 2023

Pages: 110 - 116

Reçu: 01 juin 2010

Accepté: 01 mai 2011

DOI: https://doi.org/10.2478/aoj-2011-0014

© 2011 Fundagül Bilgiç et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.