Quick answer
The short answer to “do premolar extractions flatten your face?” is no, not in every case. Removing premolars creates space, but the visible result depends on how that space is used. If the front teeth move backward, the lips often follow and the side profile may look flatter. The research does not support claims that extraction makes every face collapse.
Your profile can still change, and the direction depends on your starting teeth, lips, bite, growth, and treatment plan. Ask your orthodontist to explain the intended tooth movement before you agree to an irreversible extraction.
What orthodontists mean by a flatter profile
“Flat” is a loose appearance term, not a diagnosis. Orthodontic studies usually measure specific changes, such as lip position, incisor position, profile convexity, and the angle below the nose.
These measurements mainly describe the side view and do not mean the cheekbones or jawbone have shrunk. The studies reviewed here do not show a universal collapse of the facial skeleton after premolar removal.
The extraction itself creates space in the dental arch, but what happens next matters more for your profile. An orthodontist may use the space to align crowding, correct an overjet, or retract front teeth and lips.
That distinction explains why two people can have four premolars removed and see different results.
What the best reviews found
Elias and colleagues pooled extraction and non-extraction studies in a 2024 systematic review. On average, four-premolar treatment was linked with upper and lower lip retraction. The same review did not find a clear difference in smile aesthetics after treatment.
An average does not predict your face because extraction patients often start with more crowding, protrusive incisors, or fuller lips. Those baseline differences make a simple before-and-after comparison hard to interpret.
The evidence also limits firm promises: Benson and colleagues reviewed 399 papers about premolar extraction decisions. Of 336 primary-data studies, 332 were observational, only four were interventional, and most reports had low methodological quality.
That leaves two claims unsupported: extraction doesn't guarantee a ruined or “sunken” face, and non-extraction doesn't guarantee a better profile.
Who is more likely to notice lip or profile change
Planned incisor movement is the best clue, since intended retraction of protrusive front teeth may also retract the lips. That can make a convex profile look straighter to some viewers.
Your starting anatomy changes the response because lip thickness, posture, tooth position, jaw relationship, and remaining growth affect the final outline. Soft tissue does not follow tooth movement in a fixed ratio for every patient.
The extraction pattern also matters because removing two upper premolars serves a different plan from removing four. Anchorage affects whether the front teeth move backward or the back teeth move forward into the space.
The British Orthodontic Society says extraction and expansion each have a place in modern care. Its guidance bases the choice on the bite, tooth positions, facial appearance, stability, and expected soft-tissue response.
A social-media result cannot forecast yours because it rarely shows diagnosis, mechanics, growth, weight change, or standardized profile records.
A long-term study offers useful context
Janson's team examined 63 adults with a specific Class II bite, treated at least eight years earlier with no, two, or four premolar extractions.
Laypeople and orthodontists rated facial attractiveness and age, finding no difference linked to the three treatment protocols. The researchers also found no meaningful difference in the combined soft-tissue measurements they assessed.
That result is reassuring but not a guarantee, since the study covered one bite pattern and only 63 people. It cannot rule out an unwanted profile change in a different patient or treatment plan.
What to ask before premolars are removed
A useful consultation should connect extraction to a clear diagnosis and give understandable answers, not promise that every face responds alike.
- What problem requires space in my case?
- How much backward movement of my upper and lower incisors is planned?
- What change do you expect in my lips and side profile?
- Which non-extraction options are realistic for me, and what are their limits?
- Can we compare standardized profile photos or scans before treatment starts?
- Would a second opinion from another licensed orthodontist be reasonable?
Expansion, enamel reduction, or moving back teeth may create space in selected cases, but none automatically replaces extraction. Each option has limits based on your teeth, bone, bite, and long-term stability.
Do not try to create space with DIY expanders, finger pressure, or altered elastic wear. The American Association of Orthodontists warns that unsupervised tooth movement can damage teeth, gums, or your bite. A licensed orthodontist should plan and monitor it.
If you already had the extractions
Don't alter braces, aligners, or elastics yourself, and ask which teeth moved, what space remains, and whether the result matches the plan.
Bring comparable records because the British Orthodontic Society uses standard full-face, three-quarter, and side-profile views for clinical comparison. Keep your own camera distance, head position, expression, and lighting consistent. A casual selfie taken years later cannot isolate the effect of orthodontic treatment.
If you remain concerned, request your records and seek a second opinion from a licensed orthodontist. Reopening closed spaces is a new treatment plan, not a standard reversal, so a specialist must explain feasibility and trade-offs.
FAQ
Do four premolar extractions always pull the lips back?
No. Reviews find average lip retraction after four-premolar treatment, but the amount varies. It depends on how far the front teeth move, the anchorage plan, starting lip posture, and growth.
Can premolar extraction make the cheeks hollow?
Current reviews focus mainly on lips and the side profile, not cheek volume. They do not establish premolar extraction as a general cause of hollow cheeks. Age, body weight, lighting, and natural facial structure can change that appearance.
Is non-extraction orthodontics always better for facial aesthetics?
No. The better plan depends on your diagnosis and goals. Avoiding extraction can leave protrusion or crowding unresolved in some cases, while unnecessary retraction may be unhelpful in others.
Can an orthodontist predict my profile change exactly?
No. Records and treatment simulations can support a reasoned estimate, but soft tissue varies between people. Ask for the expected direction, likely range, and main uncertainty rather than a perfect prediction.
