Glossary · Jaw & chin
Ramus
The ramus is the vertical branch of the mandible, running from the angle of the jaw up to the joint below the ear. Its height sets how deep the jaw looks from the side. It is bone and does not change without surgery; BecomeTen reports it as a directional band, never a length.
Also called: mandibular ramus, ramus length, ramus ratio
What is the ramus?
The mandible has two parts you can name from the outside: the body, which carries the teeth and runs forward to the chin, and the ramus, the near-vertical plate rising from the gonial angle to the joint in front of the ear. Ramus height, together with the angle where it meets the body, decides how much vertical jaw sits behind the cheek. That is what makes a face look deep in profile. Its length was set by growth that finished in adolescence.
What can a photo show about the ramus?
Very little directly. The ramus sits under the masseter, the parotid gland and a layer of fat, and a front-facing photo sees it almost end-on. A profile shows its outline better, but that outline is still soft tissue over bone.
That is why BecomeTen never reports a ramus length; a number read off a selfie would be false precision. The report gives a band instead, longer, average or shorter relative to the lower face, and pairs it with a capture grade so a poor angle is flagged first.
- Head tilted down: the jaw appears deeper than it is.
- Camera below eye level: ramus and chin look longer.
- Chin pushed forward or neck extended: the outline sharpens and can pass for structure.
Is the ramus workable or structural?
Structural. No routine, exercise or posture habit lengthens a bone in an adult, and BecomeTen's plan is not permitted to claim otherwise. Where the ramus is a weak point the report says so and the plan works only on how the trait reads, the rule the methodology applies to every bone trait.
One photo. Then stop guessing.
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What actually changes how the ramus reads?
- Body fat. The fat over the masseter and under the jaw is the biggest lever by far; see body fat and the jawline.
- Neck and head posture. A neutral, slightly lengthened neck separates the jaw from the neck in a photo. Slumped posture collapses the outline.
- Hair and beard. A beard along the jaw border adds depth; hair over the ear hides the top of the ramus.
- Lighting. Side light draws a shadow under the jaw border; flat front light removes it.
None of these change the bone. They change the picture, and the picture is what a rating reads.
Questions
Does a short ramus mean a weak jawline?
Not on its own. A jawline reads from ramus height, gonial angle, chin projection and, above all, the fat and skin over them. Many faces with an unremarkable ramus read as strong because the area under the chin is lean. BecomeTen rates the definition traits separately from the bone traits for this reason.
Can chewing gum or masseter training lengthen the ramus?
No. Chewing loads the masseter, a muscle. A larger masseter can make the back of the jaw look a little wider in some people, but it does not lengthen bone. BecomeTen labels masseter-focused advice as having no studies for aesthetic purposes, and it is not part of the plan.
Why does my ramus band differ between two scans?
Almost always because the photos differ. Angle, head tilt, focal length and light all move the outline. BecomeTen grades capture quality, withholds a comparison when the photos are not comparable, and shows differences within two points as noise. Bone did not change between the scans, and the report will not say it did.