What the Maxilla Is
The maxilla is the upper jaw: a paired bone that forms the roof of the mouth, the upper tooth row, the sides of the nose, and part of the floor of each eye socket. Almost every midface feature people care about - cheekbone projection, under-eye support, nose base angle, lip support - is carried by it. When looksmaxxing discussions talk about "forward growth", they mean a maxilla that sits high and forward under the eyes rather than dropping down and back.
Forward vs Downward Growth
The direction the midface grows matters more than its size. Forward growth produces a compact lower third, supported under-eyes, visible cheekbone shelf, and an upturned nose base. Downward growth produces a longer face, flatter cheeks, more scleral show, and a nose that appears to droop. Two people can have identical bone volume and look very different purely because of growth direction.
Signs of a Recessed Maxilla
- Flat midface with little projection under the eyes
- Under-eye hollowing, dark circles, or visible sclera below the iris
- Downward-pointing nose tip and an acute nasolabial angle
- Long lower third relative to the upper and middle thirds
- Narrow palate, crowded teeth, or a history of extractions
- Habitual mouth breathing or a restricted nasal airway
Vertical balance is measurable. Run the facial thirds calculator to see whether your lower third is running long, which is the most common downstream signal of downward midface growth.
What Mewing Can and Cannot Do
Tongue posture, nasal breathing, and chewing load are part of normal craniofacial development while the sutures are still open. In children and adolescents, airway treatment and palatal expansion can genuinely change skeletal width and growth direction, and that is standard orthodontic practice.
In adults the picture is different. The midpalatal suture is fused, and there is no controlled evidence that tongue posture advances the maxilla. What adults can realistically get is better nasal breathing, less swelling, mild posture and soft-tissue change, and clearer photos. Treat before-and-after threads promising adult bone movement from mewing with heavy skepticism - lighting, angle, body fat, and jaw clenching explain most of them.
Real Options for Adults
- Orthodontics with surgery. Le Fort I advancement or surgically assisted rapid palatal expansion, planned by a maxillofacial surgeon, is the only route that moves the bone.
- Airway treatment. Treating nasal obstruction or sleep-disordered breathing has health value on its own and improves how the midface presents.
- Soft tissue. Fillers or fat grafting can camouflage mild midface flatness without changing structure.
- Controllables. Body fat, sleep, sodium, and posture change how the midface reads in photos far more than most people expect.
How the Maxilla Affects Your PSL Score
The maxilla is never scored directly, but it drives several categories that are. Midface compactness, cheekbone projection, under-eye support, and lower-third length all trace back to it, which is why forward growth is one of the strongest halos in a PSL rating. See the PSL scale for how those categories roll into tiers, and the side profile guide for how it interacts with chin and jaw projection.
Check Your Own Midface
Start with the free PSL test for a preliminary estimate from a single photo, then measure specific traits with the facial symmetry test and the golden ratio face calculator. The PSL Rank app scores the midface in full alongside the other categories.
Frequently Asked Questions
What is the maxilla?
The maxilla is the upper jaw bone. It forms the floor of the eye sockets, the sides of the nose, the roof of the mouth, and the upper tooth row. Because so much of the midface attaches to it, its forward and upward position drives cheekbone support, under-eye support, nose shape, and how the whole midface reads.
What does a recessed maxilla look like?
Common signs are a flat or sunken midface, weak cheekbone projection, under-eye hollowing or scleral show, a downward-tilted nose tip, a long lower third, narrow palate with crowded teeth, and a chin that looks weak even when the mandible is normal. A side profile usually shows the midface sitting behind the ideal line from brow to chin.
Does mewing actually move the maxilla?
In growing children and teenagers, tongue posture and airway habits are part of how the midface develops, and orthodontic expansion at that age can genuinely change skeletal width. In adults, sutures are fused and there is no controlled evidence that tongue posture repositions the maxilla. Adults may notice small soft-tissue and posture changes, not bone movement.
How do I know if my maxilla is forward or recessed?
Take a relaxed side profile photo at eye level with teeth lightly together. Look at whether the area under your eyes and around your nose base sits forward of, level with, or behind a vertical line dropped from your brow. A dental or orthodontic assessment gives the accurate answer; photos only give an impression.
Can adults fix a recessed maxilla?
Real skeletal correction in adults comes from orthodontics combined with surgery, typically Le Fort I advancement or surgically assisted palatal expansion, decided by a maxillofacial surgeon. Non-surgical options such as clear aligners, MSE, or fillers change the teeth or soft tissue rather than advancing the bone.
How much does the maxilla affect a PSL score?
A lot, indirectly. Maxillary position influences cheekbone projection, under-eye support, nose angle, lip support, and lower-third length, all of which are scored separately. That is why forward maxillary growth is treated as one of the strongest halos in PSL rating even though it is never scored on its own.