Class III Twin Blocks: a case series

• Autores: Glenda Kinder, Andrew DiBiase, D. DiBiase
• Localización: Journal of orthodontics, ISSN-e 0301-228X, ISSN 1465-3125, Vol. 30, Nº. 3, 2003, págs. 197-201
• Idioma: inglés
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• Resumen

  • Objective: To evaluate the use of Class III Twin Blocks for the early treatment of Class III malocclusion.

    Design: Retrospective analysis.

    Subjects and Method: 14 subjects were consecutively treated with a modified version of the Class III Twin Block appliance. Lateral cephalometric radiographs taken at the start and end of treatment were assessed digitally.

    Results: The mean age of subjects was 10 years and mean treatment time was 6.6 months. The cephalometric analysis of changes during treatment shows proclination of the upper incisors [mean 5.1°, SD 5.1], retroclination of the lower incisors [mean −4.5°, SD 3.9], reduction in angle SNB [mean −1.3°, SD 1.8] and an increase in the maxillary/ mandibular planes angle (mean 2.1°, SD 2.2]. Average cephalometric digitizations and photographs of a clinical case are shown.

    Conclusions: Class III Twin Blocks can be used successfully for early treatment of Class III malocclusion. A randomly allocated prospective study is required to fully evaluate the efficacy of this appliance.