Assessing the outcome of orthognathic surgery by three-dimensional soft tissue analysis

Vittert, L., Katina, S., Ayoub, A. , Khambay, B. and Bowman, A.W. (2018) Assessing the outcome of orthognathic surgery by three-dimensional soft tissue analysis. International Journal of Oral and Maxillofacial Surgery, 47(12), pp. 1587-1595. (doi: 10.1016/j.ijom.2018.05.024) (PMID:29933911) (PMCID:PMC6234045)

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Studies of orthognathic surgery often focus on pre-surgical versus post-surgical changes in facial shape. In contrast, this study provides an innovative comparison between post-surgical and control shape. Forty orthognathic surgery patients were included, who underwent three different types of surgical correction: Le Fort I maxillary advancement, bilateral sagittal split mandibular advancement, and bimaxillary advancement surgery. Control facial images were captured from volunteers from local communities in Glasgow, with patterns of age, sex, and ethnic background that matched those of the surgical patients. Facial models were fitted and Procrustes registration and principal components analysis used to allow quantitative analysis, including the comparison of group mean shape and mean asymmetry. The primary characteristic of the difference in shape was found to be residual mandibular prognathism in the group of female patients who underwent Le Fort I maxillary advancement. Individual cases were assessed against this type of shape difference, using a quantitative scale to aid clinical audit. Analysis of the combined surgical groups provided strong evidence that surgery reduces asymmetry in some parts of the face such as the upper lip region. No evidence was found that mean asymmetry in post-surgical patients is greater than that in controls.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Ayoub, Professor Ashraf and Katina, Dr Stanislav and Bowman, Prof Adrian and Khambay, Dr Balvinder and Vittert, Dr Liberty
Authors: Vittert, L., Katina, S., Ayoub, A., Khambay, B., and Bowman, A.W.
College/School:College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing > Dental School
College of Science and Engineering > School of Mathematics and Statistics > Statistics
Journal Name:International Journal of Oral and Maxillofacial Surgery
ISSN (Online):1399-0020
Published Online:19 June 2018
Copyright Holders:Copyright © 2018 The Authors
First Published:First published in International Journal of Oral and Maxillofacial Surgery 47(12): 1587-1595
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
477842The analysis of three-dimensional facial dysmorphologyAdrian BowmanWellcome Trust (WELLCOTR)086901/Z/08/ZM&S - STATISTICS