Journal Article

Soft tissue facial profile changes following functional appliance therapy

Cátia Quintão, Ione Helena, V. P. Brunharo, Robsmar C. Menezes and Marco A. O. Almeida

in The European Journal of Orthodontics

Published on behalf of European Orthodontics Society

Volume 28, issue 1, pages 35-41
Published in print February 2006 | ISSN: 0141-5387
Published online August 2005 | e-ISSN: 1460-2210 | DOI:
Soft tissue facial profile changes following functional appliance therapy

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The aim of this study was to evaluate changes in the facial profile resulting from the use of a twin block (TB) functional appliance. The sample comprised 38 patients (24 males and 14 females) with a Class II division 1 malocclusion. Nineteen subjects were treated with a functional appliance while the remaining 19, who did not undergo any intervention, served as the control. The mean age of the treated group was 9.5 years (SD 10 months) and of the control group 9.9 years (SD 13 months). Lateral cephalograms were obtained for all subjects at the initial consultation and again after one year. The changes in facial profile, resulting from treatment with the TB, were analysed after the influence of growth had been taken into account.

The results showed a significant improvement in the facial profile, which closely followed the underlying dentoskeletal changes. Thus, the most significant effects were a total facial profile improvement, retraction of the upper lip and anterior movement of soft tissue pogonion (P < 0.05). Subjects treated with a TB appliance achieved improved facial harmony, but such changes were not observed in the control group.

Journal Article.  3751 words.  Illustrated.

Subjects: Restorative Dentistry and Orthodontics

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