Analysis of Age-Related Changes in Asian Facial Skeletons Using 3D Vector Mathematics on Picture Archiving and Communication System Computed Tomography.
10.3349/ymj.2015.56.5.1395
- Author:
Soo Jin KIM
1
;
So Jung KIM
;
Jee Soo PARK
;
Sung Wan BYUN
;
Jung Ho BAE
Author Information
1. Department of Otorhinolaryngology-Head and Neck Surgery, Ewha Womans University, School of Medicine, Seoul, Korea. jhent@ewha.ac.kr
- Publication Type:Original Article
- Keywords:
Facial bones;
aging;
computed tomography;
vector;
Asian
- MeSH:
Adult;
Aged;
Aging/ethnology/*physiology;
Asian Continental Ancestry Group;
Facial Bones/*anatomy & histology/*radiography;
Female;
Humans;
Image Processing, Computer-Assisted;
Male;
Mathematics;
Maxilla/anatomy & histology/radiography;
Middle Aged;
Orbit/anatomy & histology/radiography;
Radiology Information Systems;
Republic of Korea;
Tomography, X-Ray Computed/*methods;
Young Adult;
Zygoma/anatomy & histology/radiography
- From:Yonsei Medical Journal
2015;56(5):1395-1400
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: There are marked differences in facial skeletal characteristics between Asian and Caucasian. However, ethnic differences in age-related facial skeletal changes have not yet been fully established. The aims of this study were to evaluate age-related changes in Asian midfacial skeletons and to explore ethnic differences in facial skeletal structures with aging between Caucasian and Asian. MATERIALS AND METHODS: The study included 108 men (aged 20-79 years) and 115 women (aged 20-81 years). Axial CT images with a gantry tilt angle of 0 were analyzed. We measured three-dimensional (3D) coordinates at each point with a pixel lens cursor in a picture archiving and communication system (PACS), and angles and widths between the points were calculated using 3D vector mathematics. We analyzed angular changes in 4 bony regions, including the glabellar, orbital, maxillary, and pyriform aperture regions, and changes in the orbital aperture width (distance from the posterior lacrimal crest to the frontozygomatic suture) and the pyriform width (between both upper margins of the pyriform aperture). RESULTS: All 4 midfacial angles in females and glabellar and maxillary angles in males showed statistically significant decreases with aging. On the other hand, the orbital and pyriform widths did not show statistically significant changes with aging. CONCLUSION: The results of this study suggest that Asian midfacial skeletons may change continuously throughout life, and that there may be significant differences in the midfacial skeleton between both sexes and between ethnic groups.
