Harmony · Side view · Facial Profile
Total Facial Convexity
The angle from brow prominence through the nose tip to the chin.
What is measured
The calculation
Oriented angle: glabella → pronasale → pogonion
Side view / Measurement guide
Follow the measurement
Dots mark the landmarks. Lines show how the measurement is taken.
In these guides, nasion means the nasal root, subnasale the nose base, and pogonion the most forward chin point. Frankfort refers to the direction from the ear-opening landmark to the lower orbital landmark.
Why it matters
This includes nasal projection, unlike the two convexity measures that use the nose base. It shows why a prominent nose can change the apparent profile even with the same jaw position.
- Lower on a convex profile: a more closed bend at the nose tip.
- Closer to 180°: a straighter three-point relationship; reflex values preserve the opposite orientation.
Where the idea comes from
Clinical reference
Total-profile angles extend soft-tissue profile analysis to include the nose. The specific nose-tip construction should be distinguished from angles that deliberately exclude it. [1] [2]
A worked example
Keeping the brow and chin fixed while moving the nose tip forward generally closes the convex angle.
Example values explain the calculation. They are not a target range and are not measurements of the schematic above.
Research & further reading
The sources below explain the history or related evidence. FaceIQ’s score weights and reference ranges are model settings; these papers do not collectively validate the scoring system.
[1] Holdaway · 1984
A soft-tissue cephalometric analysis and its use in orthodontic treatment planning. Part IIExplains how lip, chin and skeletal relationships must be considered together, with a range of profiles compatible with balance.
[2] Tavakoli et al. · 2023
Ideal Nasal Preferences: A Quantitative Investigation with 3D Imaging in the Iranian PopulationAsked 203 volunteers to rate edited nose features on one male and one female model. Supports studying angles and projection together, with limits from the sampled faces and raters.