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Analysis of Age-Related Changes in Asian Facial Skeletons Using 3D Vector Mathematics on Picture Archiving and Communication System Computed Tomography.

Kim SJ, Kim SJ, Park JS, Byun SW, Bae JH - Yonsei Med. J. (2015)

Bottom Line: 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.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.

View Article: PubMed Central - PubMed

Affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, Ewha Womans University, School of Medicine, Seoul, Korea.

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.

No MeSH data available.


Column graphs illustrating changes in glabellar angle, maxillary angle, orbital, and pyriform aperture angles, as well as pyriform and orbital widths. Glabellar (A) and maxillary (B) angles show a statistically sinificant decrease with aging in both sexes. Orbital (C) and pyriform (D) angles show a statistically significant decrease with aging in females only. Pyriform (E) and orbital (F) widths do not show statistically significant differences between the age groups.
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Figure 6: Column graphs illustrating changes in glabellar angle, maxillary angle, orbital, and pyriform aperture angles, as well as pyriform and orbital widths. Glabellar (A) and maxillary (B) angles show a statistically sinificant decrease with aging in both sexes. Orbital (C) and pyriform (D) angles show a statistically significant decrease with aging in females only. Pyriform (E) and orbital (F) widths do not show statistically significant differences between the age groups.

Mentions: For both men and women, the glabellar and maxillary angles showed statistically significant decreases with aging in the young, middle, and old age groups. For males, mean glabellar angles were 69.4±6.14, 67.4±6.26, and 65.0±4.77 degrees in the young, middle, and old age groups, respectively. For females, similar changes in the glabellar angle were observed with mean angles measuring 75.6±4.98, 72.0±5.88, and 71.1±4.51 degrees in the young, middle, and old age groups, respectively. For males, mean maxillary angles were 66.5±4.70, 64.3±4.27, and 63.0±4.10 degrees in the young, middle, and old age groups, respectively. For females, more prominent changes in the mean maxillary angle were observed with aging in the young and middle age groups; mean maxillary angles were 67.2±5.35, 63.6±5.90, and 61.9±5.73 degrees in the young, middle, and old age groups, respectively. For females, the orbital angle showed a statistically significant decrease between the middle (76.6±5.61 degrees) and old age groups (74.1±5.18 degrees), and the pyriform angle also showed a statistically significant decrease between the young (59.3±6.52 degrees) and middle age groups (56.7±7.21 degrees) (Fig. 6A-D).


Analysis of Age-Related Changes in Asian Facial Skeletons Using 3D Vector Mathematics on Picture Archiving and Communication System Computed Tomography.

Kim SJ, Kim SJ, Park JS, Byun SW, Bae JH - Yonsei Med. J. (2015)

Column graphs illustrating changes in glabellar angle, maxillary angle, orbital, and pyriform aperture angles, as well as pyriform and orbital widths. Glabellar (A) and maxillary (B) angles show a statistically sinificant decrease with aging in both sexes. Orbital (C) and pyriform (D) angles show a statistically significant decrease with aging in females only. Pyriform (E) and orbital (F) widths do not show statistically significant differences between the age groups.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4541673&req=5

Figure 6: Column graphs illustrating changes in glabellar angle, maxillary angle, orbital, and pyriform aperture angles, as well as pyriform and orbital widths. Glabellar (A) and maxillary (B) angles show a statistically sinificant decrease with aging in both sexes. Orbital (C) and pyriform (D) angles show a statistically significant decrease with aging in females only. Pyriform (E) and orbital (F) widths do not show statistically significant differences between the age groups.
Mentions: For both men and women, the glabellar and maxillary angles showed statistically significant decreases with aging in the young, middle, and old age groups. For males, mean glabellar angles were 69.4±6.14, 67.4±6.26, and 65.0±4.77 degrees in the young, middle, and old age groups, respectively. For females, similar changes in the glabellar angle were observed with mean angles measuring 75.6±4.98, 72.0±5.88, and 71.1±4.51 degrees in the young, middle, and old age groups, respectively. For males, mean maxillary angles were 66.5±4.70, 64.3±4.27, and 63.0±4.10 degrees in the young, middle, and old age groups, respectively. For females, more prominent changes in the mean maxillary angle were observed with aging in the young and middle age groups; mean maxillary angles were 67.2±5.35, 63.6±5.90, and 61.9±5.73 degrees in the young, middle, and old age groups, respectively. For females, the orbital angle showed a statistically significant decrease between the middle (76.6±5.61 degrees) and old age groups (74.1±5.18 degrees), and the pyriform angle also showed a statistically significant decrease between the young (59.3±6.52 degrees) and middle age groups (56.7±7.21 degrees) (Fig. 6A-D).

Bottom Line: 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.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.

View Article: PubMed Central - PubMed

Affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, Ewha Womans University, School of Medicine, Seoul, Korea.

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.

No MeSH data available.