How can I fix my uneven mouth? (Photos)

Question

I noticed my mouth falls unevenly and Im not certain what causes this. My thoughts were braces or fillers. Its been like this for as long as I can remember.

Anna Chacon, MD, FAAD · Answer

Thank you for your question and photos.

An asymmetrical mouth — especially when one side appears to “fall” more than the other — is quite common and often due to natural anatomical differences, including muscle tone, jaw position, or facial fat distribution. Since you mentioned it’s been this way for as long as you can remember, it’s likely structural or congenital rather than caused by something recent.

Possible Causes:
Skeletal asymmetry (from jaw or bite alignment)
Muscle imbalance in the lower face
Volume loss or uneven fat distribution
Dental or orthodontic factors (e.g., misaligned bite, missing teeth)

Treatment Options to Consider:
Dermal Fillers
Strategically placed filler can balance volume on one side of the lips, corners of the mouth, or chin to improve symmetry.
This is a non-surgical, temporary option that can yield subtle but effective results.

Botox (Neuromodulators)
In some cases, carefully placed Botox can relax overactive muscles that pull one side of the mouth differently, helping to balance your smile or resting mouth posture.

Orthodontics / Braces or Invisalign
If your uneven mouth is related to bite or jaw alignment, an orthodontic evaluation may be helpful. This can address deeper skeletal imbalances that fillers cannot.

Surgical Options
For more significant or skeletal asymmetry, options like lip lift or orthognathic surgery may be considered — but these are usually only pursued in moderate to severe cases.

A consultation with a board-certified dermatologist, plastic surgeon, or orthodontist can help you determine the root cause and best approach — whether cosmetic, structural, or both.

In many cases, non-surgical treatments like fillers or Botox offer excellent results with minimal downtime.

Anil R. Shah, MD · Answer

Hello! My name is Jessica, I am a physician assistant, and one of the providers at Aesthetic Skin - Winnetka & Chicago. This is a great question. An uneven mouth, where one side appears to droop or sit lower than the other, can stem from various causes—including natural facial asymmetry, prior dental work like braces, muscle imbalance, or even residual effects from fillers. Since you mention it’s been this way for as long as you can remember, it may be primarily anatomical or developmental, though prior interventions like cheek filler or orthodontics could have subtly shifted muscle function or support structures. Correction often involves a combination of neuromodulators like Botox and dermal fillers to achieve better symmetry. Botox can be used to relax overactive muscles on the stronger or higher side of the mouth, subtly allowing the weaker side to "catch up." On the other hand, fillers can be used to provide support and volume to the lower or flatter side, especially if there’s volume loss or soft tissue asymmetry. I hope this helps and best of luck!

Camille Cash, MD · Answer

There are several ways to address asymmetry based on the cause.  Fillers and Botox can help improve these issues by correcting volume and dynamic muscle activity concerns.  Visit with an expert injector near you to learn more.

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