Face Shape Changes Before and After Braces: The Truth

Introduction: More Than Just Straight Teeth

When you sign up for orthodontic treatment, your primary goal is likely a straight smile. However, many patients are surprised—sometimes pleasantly, sometimes not—to notice subtle or even drastic changes in their facial structure. From a sharper jawline to “sunken” cheeks, the internet is full of anecdotes about how braces changed someone’s face.

In this 3000-word guide, we break down the medical mechanisms behind these changes. We will explore how correcting malocclusions (bad bites) alters the soft tissue profile, the controversial role of tooth extractions, and the differences between treating a growing child versus a fully grown adult.

1. The Anatomy of Facial Support

To understand how braces change your face, you must first understand what supports your face. Your lips and cheeks act like drapery, hanging over the framework of your teeth and jaws.

• The Lips: Supported primarily by the incisors (front teeth). If these teeth protrude (stick out), the lips look full or pushed forward. If these teeth are retracted (pulled back), the lips lose support and fall back.
• The Cheeks: Supported by the width of the dental arch (the U-shape of your teeth). A wide arch provides full cheek support. A narrow arch can make cheeks look flatter.
• The Vertical Dimension: The height of your face is determined by how your upper and lower teeth touch. Correcting a deep bite can literally lengthen the face.

2. Specific Bite Corrections and Face Shape Changes

Not everyone sees facial changes. It depends largely on the type of malocclusion being treated.

Overbite (Buck Teeth)

The Problem: The upper front teeth stick out far beyond the lower teeth. This often causes the upper lip to protrude, creating a convex profile (where the chin looks weak).

The Change: Braces pull the upper teeth back. As the teeth retreat, the upper lip follows. This flattens the profile and can make the nose appear larger or more prominent in comparison. However, it also balances the face, making a weak chin appear stronger by reducing the projection of the mouth.

Underbite (Bulldog Look)

The Problem: The lower jaw sits in front of the upper jaw, giving the face a “concave” or moon shape. The chin appears very prominent and sharp.

The Change: In severe cases, this requires jaw surgery + braces. However, in milder cases, braces can camouflage the discrepancy. By pushing lower teeth back and upper teeth forward, the lower lip tucks in, softening the aggressive appearance of the chin. This softens the jawline, making the face look more oval and less square/pointy.

Open Bite (Long Face)

The Problem: The front teeth don’t touch when the back teeth are closed. This often forces the patient to strain their lip muscles to close their mouth (mental strain), causing a bumpy chin texture.

The Change: Closing the bite allows the lips to close naturally without strain. This relaxes the chin muscle (mentalis), smoothing out the chin and potentially shortening the lower third of the face, making it look less “long” or Oblong.

3. The “Extraction Face” Controversy

One of the most heated debates in orthodontics is whether extracting healthy premolars to create space ruins the face. The theory is that removing teeth reduces the volume of the dental arch, causing the skin and lips to collapse inward, leading to a “dished-in” profile or premature aging.

If you have a full, convex profile (pouty lips, weak chin), extraction can be beautifying. It balances the face. If you have a flat profile, your orthodontist should likely use expansion (widening the palate) instead of extraction to avoid the “old” look.

4. Adults vs. Children: Skeletal vs. Dental Change

A crucial distinction is age.

• Children (Growing Patients): Orthodontists can use appliances like Palatal Expanders or Headgear to guide the growth of the jawbones themselves. This causes skeletal changes. For example, expanding the palate can physically widen the floor of the nose and the cheekbones, creating a wider, more robust face shape.
• Adults (Non-Growing): Once puberty ends, the jawbones fuse. Braces can only move the teeth (dental change), not the bone (skeletal change). Therefore, facial changes in adults are generally subtler and limited to the soft tissue (lips/cheeks) response to tooth movement. To change the actual jaw shape in an adult, orthognathic surgery is usually required.

5. The “Sunken Face” & Weight Loss

Many patients report looking gaunt or having hollow cheeks specifically during treatment. This is rarely due to bone structure changes and more often due to:

1. Dietary Changes: Braces hurt. Patients often switch to soft foods (soups, smoothies) and stop snacking on hard, crunchy foods. This caloric deficit leads to overall weight loss, which shows up first in the face.
2. Muscle Atrophy: Because you are chewing less vigorously, the Masseter muscles (jaw muscles) may shrink slightly from disuse. This slims the lower face, making cheekbones pop but potentially causing a gaunt look.

Good News: This is temporary. Once braces are off and normal eating resumes, the muscles bulk up again, and the face fills out.

6. Symmetry: The Hidden Benefit

Even if braces don’t fundamentally change you from a “Round” to a “Square” face, they often fix Asymmetry. A midline deviation (where the center of your teeth doesn’t match the center of your face) can make the jaw look crooked. Aligning the midline restores balance, making the face appear more harmonious and classically attractive.

Conclusion: Managing Expectations

Braces are a powerful tool for facial esthetics, but they are not plastic surgery. They will optimize your existing features, balance your profile, and support your lips correctly. They will not grow you a new chin or shave down your jawbone.

If you are concerned about how braces might affect your specific face shape, ask your orthodontist for a “VTO” (Visual Treatment Objective) or a digital simulation before starting treatment.