| Reaction of facial soft tissues to treatment with a Herbst appliance. | |
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MedLine Citation:
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PMID: 22391787 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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OBJECTIVE: The objective of this prospective longitudinal study was to investigate the reaction of facial soft tissues to treatment with a Herbst appliance. We aimed to quantify three-dimensionally (3D) the isolated effect of the Herbst appliance and volume changes in the lip profile. PATIENTS AND METHODS: The 3D data of the facial soft tissues of 34 patients with skeletal Class II (17 female and 17 male, mean age 13.5 ± 1.8 years) were prepared in a standardized manner immediately before (T1) and after (T2) treatment with a Herbst appliance. Anthropometric evaluation was carried out in sagittal and vertical dimensions. To quantify volume changes, pretherapeutic and posttherapeutic images were superimposed three-dimensionally and the difference volumes calculated. Following testing for normal distribution, a statistical analysis was carried out using the paired t test. RESULTS: We observed ventral development of the soft tissues of the lower jaw with flattening of the profile curvature and anterior displacement of the sublabial region in a total of 27 patients. Anterior facial height was lengthened and the facial depth at the lower jaw increased. The largest percentage changes were noted in the lip profile, with a reduction in the red margin of the upper lip and an increase in lower lip height. We also observed a reduction of the sublabial fold in conjunction with a simultaneous increase in volume. CONCLUSION: The influence of the Herbst appliance on the facial soft tissues is expected to result in a positive treatment outcome, particularly in patients with a convex profile, a retrusive lower lip, and a marked sublabial fold. We observed a broad clinical spectrum of individual reactions in the facial soft tissues. It is, thus, not possible to detect a linear relationship between the Herbst treatment and soft tissue changes, making soft tissue changes difficult to predict. |
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Authors:
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P Meyer-Marcotty; J Kochel; U Richter; F Richter |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-3-7 |
Journal Detail:
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Title: Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie Volume: - ISSN: 1615-6714 ISO Abbreviation: - Publication Date: 2012 Mar |
Date Detail:
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Created Date: 2012-3-6 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9713484 Medline TA: J Orofac Orthop Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Orthodontics, Würzburg University Hospital, Pleicherwall 2, 97070, Würzburg, Germany, Meyer_P1@klinik.uni-wuerzburg.de. |
Vernacular Title:
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Reaktionen der Gesichtsweichteile auf die Therapie mit der Herbst-Apparatur. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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