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Updated: Jun 23, 2026

Quantitative Assessment Protocol for Facial Soft Tissue Volumetric Changes with Stereophotogrammetry
Published on: December 9, 2025
Facial soft tissue values in Persian adults with normal occlusion and well-balanced faces
Amjad Al Taki1, Fatma Oguz, Eyas Abuhijleh
1Department of Orthodontics, School of Dentistry, Ajman University of Science and Technology, Ajman, United Arab Emirates.
Objective:
To determine the mean soft tissue facial profile for Persian adults as determined by the Holdaway analysis.
Materials And Methods:
Lateral cephalometric radiographs for 62 Persian adults with normal occlusion were used.
Results:
Persian adults have the same values of Holdaway soft tissue norms except for the skeletal profile convexity, H angle, basic upper lip thickness, and soft tissue chin thickness, which were increased in Persians in relation to Holdaway norms. When comparing men with women, the nose prominence (P < .001), basic upper lip thickness (P < .001), upper lip thickness (P < .001), inferior sulcus to H line (P < .001), and soft tissue chin thickness (P < .01) were significantly increased in Persian men compared with Persian women.
Conclusions:
Persian adults differ from Holdaway's soft tissue norms in an increased skeletal profile convexity, H angle, basic upper lip thickness, and soft tissue chin thickness. These are recommended for use when formulating a treatment plan for this ethnic group.
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