Braces change your face primarily by repositioning your teeth and jaw alignment, which shifts the soft tissue draped over those structures. The changes are most visible in the lower third of your face: your lips, chin, and the area around your mouth. Most people won’t see dramatic cheekbone or midface transformation, but the profile view can look noticeably different, especially when teeth are moved significantly forward or back.
How Tooth Movement Reshapes Soft Tissue
Your lips rest directly against your teeth. When braces push teeth inward or pull them forward, the lips follow. This is the single biggest way braces alter your appearance. The relationship is roughly proportional: for every millimeter the upper front teeth move backward, the angle between your nose and upper lip increases by about 1.6 degrees. In patients who have premolars removed to create space for retraction, the upper incisors may move back around 6.7 mm, which can increase that nose-to-lip angle by about 10.5 degrees. That’s enough to produce a visible change in your profile.
The lower lip tends to respond more than the upper lip. Research using 3D facial scanning found that after treatment, the lower lip and corners of the mouth shifted backward by roughly half a millimeter on average. The upper lip showed no significant positional change in the same study. This makes sense: the lower lip sits against both the lower and upper teeth, so it’s influenced by movement in either arch.
People with thicker lips generally see less dramatic surface changes from the same amount of tooth movement. The extra tissue acts as a buffer, absorbing some of the repositioning underneath. If you have thinner lips, you’re more likely to notice the difference.
What Happens to Your Jawline and Chin
Braces don’t move your jawbone itself. They move teeth within the bone. But correcting an overbite or underbite can change how the jaw sits, which affects the appearance of your chin and jawline. For example, if your lower teeth are set too far back and braces bring them forward into proper alignment, your chin may look slightly more prominent. Conversely, retracting protruding lower teeth can make the chin appear less projected.
When teeth move through bone, the body responds with a process called alveolar bone remodeling. Cells break down bone on one side of the tooth and build new bone on the other side, guided by the pressure from the wire. This remodeling is limited to the bone immediately surrounding your teeth, not the broader jaw structure. So while braces fine-tune the contour of the area around your mouth, they don’t reshape the fundamental size or shape of your mandible or cheekbones.
The Extraction Question
One of the most common concerns about braces is whether extracting premolars (the teeth between your canines and molars) will make your face look “flat” or sunken. This fear has circulated widely online, but long-term research doesn’t support it.
A study comparing patients roughly 16 to 18 years after treatment found no significant differences in facial attractiveness or apparent age between those who had no extractions, two premolars removed, or four premolars removed. Lip position measurements relative to standard reference lines were statistically similar across all three groups. The only notable finding was that the four-extraction group had slightly longer upper and lower lip lengths and a marginally greater lower face height, but these differences didn’t translate into a visible aesthetic penalty when rated by observers.
This doesn’t mean extractions have zero effect on your profile. They can, particularly in the short term, as the front teeth retract into the newly available space. But the soft tissue adapts over time, and the long-term outcome is generally indistinguishable from non-extraction treatment in terms of how your face looks to other people.
Cheek Fullness and Buccal Corridors
Some patients worry about their cheeks looking hollow after braces, or hope that widening their arch will fill out their smile. The dark spaces visible at the corners of your mouth when you smile (called buccal corridors) are influenced by arch width, but research shows they have very little impact on how attractive your smile looks to others. Expanding the jaw purely to eliminate those dark spaces isn’t well supported. Unless the spaces are extremely obvious, most people simply don’t notice them. Cheek fullness is determined far more by your fat pads and bone structure than by the width of your dental arch.
Vertical Changes to Face Height
A persistent idea in orthodontics is that extracting premolars might allow the back teeth to shift forward and reduce the vertical height of the lower face, a concept sometimes called the “wedge effect.” Research has effectively rejected this. A retrospective study found that the vertical dimension remained stable after treatment regardless of whether first premolars were extracted, second premolars were extracted, or no teeth were removed at all. Changes to the jaw angle ranged from just 0.4 to 0.8 degrees across all groups, which is clinically insignificant. Your lower face height is not going to shrink or grow from braces alone.
Facial Symmetry Improvements
If your dental midline is shifted (your front teeth don’t line up with the center of your face), braces can correct this, and the result often improves the perception of facial symmetry. In mild cases, orthodontists use elastics, small temporary implants for anchorage, or selective extractions to center the teeth. One documented case corrected a 3 mm upper midline shift and a 1 mm lower midline shift using fixed appliances alone, producing a noticeably more balanced appearance.
There are limits, though. When facial asymmetry stems from the bone itself, such as one side of the jaw being longer than the other, braces can only compensate so much. Severe skeletal asymmetry typically requires jaw surgery combined with orthodontics to produce a meaningful change.
When Changes Become Visible
You won’t need to wait until the end of treatment to start seeing facial changes. Research tracking soft tissue during orthodontic treatment in adult women detected measurable changes as early as three months in. These early shifts didn’t worsen as treatment continued, suggesting the soft tissue adapts relatively quickly to the new tooth positions and then stabilizes.
After braces come off, there’s an additional subtle shift. The brackets themselves add a small amount of bulk to the front of your teeth, pushing your lips outward slightly. Removing them allows the lips to settle back. 3D imaging studies confirmed a slight backward movement of the lower lip and mouth corners after debonding, though the change is under a millimeter for most people.
The full picture of how braces change your face depends heavily on your starting point. Someone with severely protruding front teeth will see a more dramatic profile change than someone with mild crowding. The underlying bone structure, lip thickness, and how far the teeth need to move all shape the final result. But for most people, the changes are real, positive, and concentrated in the lower face, giving a more balanced profile without altering the fundamental character of your features.