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The maxilla and the forward growth claim
The maxilla is the upper jaw bone. It carries the upper teeth, forms the floor of the orbits and most of the midface, and its position is fixed in adults. A maxilla set back enough to matter shows as a flat midface under the eyes, a recessed nasal base, and a convex profile, and that is an orthognathic finding. Posture and tongue position do not move it.
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VerdictFixed in adults
Verdict
Fixed in adultsAdult maxillary position is fixed; a midface flat under the eyes with a set-back nasal base and convex profile is a surgical finding, not a posture one
Do your facial analysis: Side profile analysis →What the maxilla does
The maxilla is a paired bone fused at the midline that forms the upper jaw, the hard palate, the floor of each eye socket, and the sides of the nasal opening. It holds the upper teeth and supports the cheek area, which is why its position influences midface projection, the nasal base, and how the eyes are supported from below.
Because it sits at the center of the midface, where it ends up determines a lot of the profile. A maxilla positioned further forward gives more support under the eyes and a flatter, more projected midface. One positioned further back contributes to a convex profile, a deeper under-eye hollow, and less support for the nasal base.
What forward growth means
The phrase describes the direction of maxillary growth during development. The maxilla grows downward and forward relative to the skull base through childhood and adolescence, and how far forward that carries it varies with genetics and, to a debated extent, with function such as breathing pattern. The direction is normal development; the question is how far it goes in a given person.
Orthodontists do influence maxillary position in growing children, using appliances that apply sustained force during active growth. That is established practice with a real mechanism and a narrow age window. It is also the piece of legitimate science that online claims about adult forward growth borrow their credibility from, usually without mentioning the age limit.
How much is too much, and what it costs
A maxilla within the normal range is invisible as such; you see a midface, not a bone. A maxilla set back enough to matter shows three signs together: flatness under the eyes with early hollowing, a nasal base that sits back so the nose reads larger, and a convex profile with the upper teeth behind where the lower lip would expect them. One sign alone is soft tissue or another bone; three is the pattern.
The cost is partly cosmetic and partly functional. A retruded maxilla often comes with a narrow palate, crowded upper teeth, a bite that does not meet properly, and a smaller nasal airway, which is why it is assessed by an orthodontist and not by a photo. A midface that reads flatter than it did a few years ago, in an adult, is fat descent, not bone, and is worth separating before assuming anything skeletal.
What actually changes it
In adults, nothing except surgery. Maxillary growth completes around the end of adolescence and the sutures fuse; posture, tongue position, and chewing do not produce the force to move fused bone. Bone remodels throughout life, but that is surface turnover, not relocation. The before-and-after images circulated for mewing are head angle, lighting, weight change, and clenching.
Genuine repositioning is orthognathic surgery, a Le Fort advancement planned with imaging by an orthodontist and a maxillofacial surgeon, considered when the bite or airway is affected. Filler or fat grafting to the cheek and nasal base changes the soft-tissue read without moving bone. In a child, the window is real and time-limited, which argues for an orthodontic consultation. Check your profile angle with the side profile analysis tool to see whether the convexity is even there.
FAQ
Common questions
What is maxillary forward growth?+
It describes the downward and forward direction in which the upper jaw grows relative to the skull base during childhood and adolescence. How far that growth carries it varies between individuals and affects midface projection.
How do I know if my maxilla is recessed, and how recessed is too recessed?+
You cannot measure it from a photo, but the pattern shows as three signs together: flatness under the eyes, a nasal base that sits back, and a convex profile with the upper teeth behind the lower lip line. That combination, especially with a bite that does not meet properly, is an orthodontist’s assessment with imaging.
Can adults change their maxilla position?+
Not without surgery. Maxillary growth completes in the late teens and the surrounding sutures fuse. Repositioning it in an adult means orthognathic surgery planned by an orthodontist and a maxillofacial surgeon.
Does mewing work on the maxilla?+
There is no good evidence that it does in adults. Tongue posture does not generate the force required to move fused bone. The case reports offered as proof lack controls, and apparent results are explained by head angle and lighting.