Difference in Midface Rejuvenation Strategy Between East Asians and Caucasians Based on Analysis of Age-related Changes in the Orbit and Midcheek Using Computed Tomography.

BACKGROUND: The differences between Caucasian and East Asian faces could lead to different age-related bony changes. We analyzed computed tomography (CT) scan images of East Asians to find objective differences in midface rejuvenation strategy between East Asians and Caucasians.

METHODS: We reviewed 54 East Asian individuals' charts and facial CT images ranging in age-group: Group A (21-30 years), Group B (41-50 years), and Group C (61-70 years). No patients had congenital or acquired facial deformity and history of facial trauma. The anteroposterior length of the orbital roof and floor (LOR, LOF) and the angle of the anterior wall of the maxilla were recorded on parasagittal images through the midline of the orbit.

RESULTS: The LORs at their midpoints showed significant differences between Groups A and B (p < 0.01). The LOFs were also significantly different between Groups A and B (p < 0.001). The difference in the angle between the anterior maxillary wall and the orbital floor was not significant between Groups A and B. The lengths between Groups B and C showed no significant differences.

CONCLUSION: Our study demonstrated that the aging process in East Asians differs considerably from that in Caucasians, with characteristic significant changes in LOF and LOR. Since the aging process is different, the strategies to cope with aging should also differ. Volume restoration of the inferior orbital rim in the midface is one of the most important rejuvenation methods in East Asians.

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