Assessment of regional asymmetry of the face before and after surgical correction of unilateral cleft lip

Al-Rudainy, D. , Ju, X., Stanton, S., Mehendale, F. V. and Ayoub, A. (2018) Assessment of regional asymmetry of the face before and after surgical correction of unilateral cleft lip. Journal of Cranio-Maxillofacial Surgery, 46(6), pp. 974-978. (doi:10.1016/j.jcms.2018.03.023) (PMID:29752048)

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Abstract

This study was carried out on 26 unilateral cleft lip and palate (UCLP) cases with mean age 3.6 ± 0.7 months.3D facial images were captured for each infant 2–3 days before the repair of cleft lip and at 4 months following surgery at a mean age of 8.2 ± 1.8 months, using a stereophotogrammetry imaging system. An iterative closest point (ICP) algorithm was used to superimpose the 3D facial model to its mirror image using VRMesh software. After the superimposition, the face model was divided into seven anatomical regions. Asymmetry of the entire face and of the anatomical regions was calculated by measuring the absolute distances between the 3D facial surface model and its mirror image. Colour maps were used to illustrate the patterns and magnitude of the facial asymmetry before and after surgery. There were significant decreases in the asymmetry scores for the nose, upper lip and the cheeks as a result of the surgical repair of cleft lips. Surgery did not change the magnitude of the asymmetry scores for the lower lip and chin. The main outcome of the findings of this innovative study is to inform the required surgical refinement of primary repair of cleft lip in order to minimise facial asymmetry and to guide secondary corrective surgery. We have presented a sensitive tool that could be used for comparative analysis of lip repair at various cleft centres.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Ju, Dr Xiangyang and Ayoub, Professor Ashraf and Al-Rudainy, Dhelal Hatem Nsaif
Authors: Al-Rudainy, D., Ju, X., Stanton, S., Mehendale, F. V., and Ayoub, A.
College/School:College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing > Dental School
Journal Name:Journal of Cranio-Maxillofacial Surgery
Publisher:Elsevier
ISSN:1010-5182
ISSN (Online):1878-4119
Published Online:06 April 2018
Copyright Holders:Copyright © 2018 Elsevier
First Published:First published in Journal of Cranio-Maxillofacial Surgery 46(6):974-978
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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