what does an underbite look like

2 min read 05-02-2025

Meta Description: Wondering, "What does an underbite look like?" This comprehensive guide explores underbite characteristics, causes, types, and treatment options with helpful images. Learn how to identify an underbite and understand your options.

An underbite, also known as mandibular prognathism, is a type of malocclusion where the lower jaw (mandible) protrudes beyond the upper jaw (maxilla). This means your lower teeth significantly overlap your upper teeth when your mouth is closed. But what does this actually look like? Let's explore the visual characteristics and more.

Visual Characteristics of an Underbite

Understanding what an underbite looks like involves recognizing several key visual cues:

The Overlapping Teeth

The most obvious characteristic is the protrusion of the lower jaw. When the mouth is closed, the lower teeth are clearly visible in front of the upper teeth. The degree of overlap can vary significantly, from a slight protrusion to a very pronounced one.

[Insert image here: A clear, high-quality image showing a mild underbite. Alt text: "Mild underbite showing slight lower jaw protrusion."]

[Insert image here: A clear, high-quality image showing a severe underbite. Alt text: "Severe underbite with significant lower jaw protrusion and overlapping teeth."]

Jawline and Facial Profile

An underbite often affects the overall facial profile. You might notice a:

Prominent lower jaw: The lower jaw appears more pronounced and forward-projecting.
Recessed upper jaw: In contrast, the upper jaw may appear slightly receded.
Chin projection: The chin often appears more prominent than usual.

[Insert image here: A side profile image showing a clear underbite. Alt text: "Side profile view illustrating a pronounced underbite."]

Other Potential Features

While not always present, other features sometimes associated with underbites include:

Difficulty chewing or biting: The misalignment can make it harder to chew food efficiently.
Speech impediments: In some cases, the jaw position can affect speech clarity.
Facial asymmetry: Sometimes, an underbite can contribute to slight asymmetry in the face.

Types of Underbites

Underbites aren't all the same. They can be classified based on severity and the underlying cause:

Class III Malocclusion: This is the general term for an underbite in dental classification.
Anterior Crossbite: The lower incisors overlap the upper incisors.
Posterior Crossbite: The posterior teeth (molars and premolars) are misaligned.

What Causes an Underbite?

The causes of underbites are varied and can include:

Genetics: Family history of underbites is a strong risk factor.
Thumb sucking or pacifier use: Prolonged habits can affect jaw development.
Mouth breathing: This can lead to altered facial growth.
Trauma to the jaw: Injuries can sometimes affect jaw alignment.

How is an Underbite Treated?

Treatment options depend on the severity of the underbite and the patient's age. Common treatments include:

Orthodontic treatment (braces): This is a common method to gradually realign the teeth and jaws.
Orthognathic surgery: For severe cases, surgery may be necessary to correct the jawbone position.

When to Seek Professional Help

If you suspect you or your child has an underbite, it's essential to consult an orthodontist or dentist. Early diagnosis and treatment can often lead to better outcomes. Don't hesitate to seek professional advice if you have any concerns about your bite or jaw alignment. Early intervention is key for optimal results.

This guide provides a visual and informative overview of underbites. Remember, this information is for educational purposes only and should not replace professional medical advice. Consult a healthcare professional for diagnosis and treatment.