Three-Dimensional Computed Tomography-Based Longitudinal Analysis of Facial Skeletal Aging

Area of Science:

• Craniofacial anatomy
• Aging research
• Medical imaging

Background:

• Facial aging involves complex, region-specific changes in soft tissue and bone.
• Previous studies on skeletal remodeling often use cross-sectional imaging, limiting longitudinal understanding.
• This study addresses the need for longitudinal data on bony changes over time.

Purpose of the Study:

• To quantify and characterize age-related changes in facial skeletal morphology.
• To longitudinally assess skeletal facial aging using serial three-dimensional CT scans.
• To establish a baseline for understanding individual skeletal aging patterns.

Main Methods:

• Retrospective analysis of 96 Caucasian adults with two facial CT scans approximately a decade apart.
• Three-dimensional reconstruction and anatomical measurements across facial thirds.
• Statistical analysis using paired t-tests and ANOVA to identify significant changes.

Main Results:

• Significant reductions observed in vertical facial height, transverse width, and specific facial angles (glabella, pyriform, maxillary).
• Increase in orbital aperture area and mandibular angle with age.
• Age-related changes were most pronounced in individuals aged 30-50 years.

Conclusions:

• The facial skeleton undergoes measurable remodeling throughout the aging process.
• Longitudinal data supports the necessity of addressing bony changes in facial rejuvenation.
• Enhanced understanding of skeletal aging can lead to more accurate and durable aesthetic interventions.