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Bite force and its association with stability following Class II/1 functional appliance treatment

Antonarakis, Gregory S. ; Kjellberg, Heidrun ; Kiliaridis, Stavros

In: European Journal of Orthodontics, 2013, vol. 35, no. 4, p. 434-441

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    Titre
    • Bite force and its association with stability following Class II/1 functional appliance treatment
    Auteur
    • Antonarakis, Gregory S.. Department of Orthodontics, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg,Sweden and
    • Kjellberg, Heidrun. Department of Orthodontics, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg,Sweden and
    • Kiliaridis, Stavros. Department of Orthodontics, School of Dentistry, University of Geneva, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • European Journal of Orthodontics, 2013, vol. 35, no. 4, p. 434-441. Oxford University Press
    Autre version électronique
    Classification
    • Santé
    Identifiant OAI-PMH
    • oai:doc.rero.ch:300852
    Summary
    SUMMARY The aims of this study were to investigate the value of pre-treatment maximal molar bite force as a predictive variable in determining post-treatment changes and stability following functional appliance treatment in Class II malocclusion children. Twenty-eight Class II malocclusion children having undergone functional appliance treatment were followed for at least 1 year post-treatment. Maximal molar bite force measurements, lateral cephalograms, and study casts were taken before treatment, after treatment, and after post-treatment follow-up. Relationships between pre-treatment maximal molar bite force and dental or cephalometric changes post-treatment were examined. Patients were divided into stable and unstable groups, based on dental sagittal changes (overjet and molar relationship), and differences between the two groups of patients determined. Post-treatment changes varied widely. Thirteen children showed dentoalveolar sagittal relapse, namely a shift in molars towards a Class II relationship and an increase in overjet, while 15 did not. The unstable group demonstrated a lower pre-treatment maximal molar bite force, as well as a more obtuse gonial angle, than the stable group. The gonial angle was found to be negatively correlated to maximal molar bite force and may thus be a cephalometric indicator partly reflecting the functional condition of the masticatory muscles. Children with a lower pre-treatment maximal molar bite force were more prone to dentoalveolar sagittal relapse following functional appliance treatment