Nasofacial angle: inclination of the nasal dorsum
Quick facts
- Definition
- Angle between the line of the nasal dorsum and the facial plane, seen in profile.
- References
- Nasion, pogonion and nasal tip.
- Cited range
- Between about 30 and 40 degrees, as a descriptive reference and not a goal.
- Depends on
- Height of the dorsum, projection of the tip and position of the chin.
- In HOF
- Describes the profile; it does not define what should be treated.
The nasofacial angle is measured in profile. It describes the inclination of the nasal dorsum relative to the facial plane, a line drawn from the nasion to the pogonion. The more it leans forward, the greater the apparent projection of the nose.
How is it measured?
In cephalometric analysis or on a standardized profile photo, two lines are drawn: one along the nasal dorsum, from the nasion to the tip, and another from the nasion to the pogonion. The angle between them is the nasofacial angle. Classic cephalometry uses radiographs, and photo analysis requires standardization.
| Profile measurement | Describes |
|---|---|
| Nasofacial angle | Inclination of the nasal dorsum |
| Nasofrontal angle | Transition between the forehead and the nose |
| Nasolabial angle | Relationship between the columella and the upper lip |
| Nasomental angle | Nose in relation to the chin |
What does the angle show, and what does it not?
It depends on three elements at once: the dorsum, the tip and the chin. A recessed chin can make the nose look bigger, and a projecting chin can reduce that impression. That is why looking at the nose alone is misleading.
And in HOF?
Harmonization of the nose and chin is done with extra attention, because the nose is a high vascular risk zone, and hyaluronidase should be available whenever hyaluronic acid is used. The angle serves to describe the facial profile, not to promise results. Indication and technique are the decision of the qualified professional, according to the rules of their professional council in Brazil.
Also known as: nasal dorsum angle.
Frequently asked questions
Is there an ideal nasofacial angle?
There are ranges used as a descriptive reference, but they vary with age, sex, ethnic group and aesthetic preference. They serve to organize the analysis, not to impose a standard.