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Article: A longitudinal study of facial growth of Southern Chinese in Hong Kong: Comprehensive photogrammetric analyses

TitleA longitudinal study of facial growth of Southern Chinese in Hong Kong: Comprehensive photogrammetric analyses
Authors
Issue Date2017
PublisherPublic Library of Science. The Journal's web site is located at http://www.plosone.org/home.action
Citation
PLoS One, 2017, v. 12 n. 10, p. e0186598 How to Cite?
AbstractIntroduction Existing studies on facial growth were mostly cross-sectional in nature and only a limited number of facial measurements were investigated. The purposes of this study were to longitudinally investigate facial growth of Chinese in Hong Kong from 12 through 15 to 18 years of age and to compare the magnitude of growth changes between genders. Methods and findings Standardized frontal and lateral facial photographs were taken from 266 (149 females and 117 males) and 265 (145 females and 120 males) participants, respectively, at all three age levels. Linear and angular measurements, profile inclinations, and proportion indices were recorded. Statistical analyses were performed to investigate growth changes of facial features. Comparisons were made between genders in terms of the magnitude of growth changes from ages 12 to 15, 15 to 18, and 12 to 18 years. For the overall face, all linear measurements increased significantly (p < 0.05) except for height of the lower profile in females (p = 0.069) and width of the face in males (p = 0.648). In both genders, the increase in height of eye fissure was around 10% (p < 0.001). There was significant decrease in nasofrontal angle (p < 0.001) and increase in nasofacial angle (p < 0.001) in both genders and these changes were larger in males. Vermilion-total upper lip height index remained stable in females (p = 0.770) but increased in males (p = 0.020). Nasofrontal angle (effect size: 0.55) and lower vermilion contour index (effect size: 0.59) demonstrated large magnitude of gender difference in the amount of growth changes from 12 to 18 years. Conclusions Growth changes of facial features and gender differences in the magnitude of facial growth were determined. The findings may benefit different clinical specialties and other nonclinical fields where facial growth are of interest.
Persistent Identifierhttp://hdl.handle.net/10722/254863
ISSN
2015 Impact Factor: 3.057
2015 SCImago Journal Rankings: 1.395

 

DC FieldValueLanguage
dc.contributor.authorWen, YF-
dc.contributor.authorWong, HM-
dc.contributor.authorMcGrath, CPJ-
dc.date.accessioned2018-06-21T01:07:46Z-
dc.date.available2018-06-21T01:07:46Z-
dc.date.issued2017-
dc.identifier.citationPLoS One, 2017, v. 12 n. 10, p. e0186598-
dc.identifier.issn1932-6203-
dc.identifier.urihttp://hdl.handle.net/10722/254863-
dc.description.abstractIntroduction Existing studies on facial growth were mostly cross-sectional in nature and only a limited number of facial measurements were investigated. The purposes of this study were to longitudinally investigate facial growth of Chinese in Hong Kong from 12 through 15 to 18 years of age and to compare the magnitude of growth changes between genders. Methods and findings Standardized frontal and lateral facial photographs were taken from 266 (149 females and 117 males) and 265 (145 females and 120 males) participants, respectively, at all three age levels. Linear and angular measurements, profile inclinations, and proportion indices were recorded. Statistical analyses were performed to investigate growth changes of facial features. Comparisons were made between genders in terms of the magnitude of growth changes from ages 12 to 15, 15 to 18, and 12 to 18 years. For the overall face, all linear measurements increased significantly (p < 0.05) except for height of the lower profile in females (p = 0.069) and width of the face in males (p = 0.648). In both genders, the increase in height of eye fissure was around 10% (p < 0.001). There was significant decrease in nasofrontal angle (p < 0.001) and increase in nasofacial angle (p < 0.001) in both genders and these changes were larger in males. Vermilion-total upper lip height index remained stable in females (p = 0.770) but increased in males (p = 0.020). Nasofrontal angle (effect size: 0.55) and lower vermilion contour index (effect size: 0.59) demonstrated large magnitude of gender difference in the amount of growth changes from 12 to 18 years. Conclusions Growth changes of facial features and gender differences in the magnitude of facial growth were determined. The findings may benefit different clinical specialties and other nonclinical fields where facial growth are of interest.-
dc.languageeng-
dc.publisherPublic Library of Science. The Journal's web site is located at http://www.plosone.org/home.action-
dc.relation.ispartofPLoS One-
dc.rights© 2017 Wen et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleA longitudinal study of facial growth of Southern Chinese in Hong Kong: Comprehensive photogrammetric analyses-
dc.typeArticle-
dc.identifier.emailWong, HM: wonghmg@hkucc.hku.hk-
dc.identifier.emailMcGrath, CPJ: mcgrathc@hkucc.hku.hk-
dc.identifier.authorityWong, HM=rp00042-
dc.identifier.authorityMcGrath, CPJ=rp00037-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1371/journal.pone.0186598-
dc.identifier.hkuros285329-
dc.identifier.volume12-
dc.identifier.issue10-
dc.identifier.spagee0186598-
dc.identifier.epagee0186598-
dc.publisher.placeUnited States-

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