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What Is a Crossbite – You Need To Know About This

what is a crossbite

A crossbite is a common dental issue that can affect both children and adults. Understanding what a crossbite is, its symptoms, causes, and treatment options is essential for maintaining optimal oral health. In this blog, we’ll delve into everything you need to know about crossbites, including anterior and posterior crossbite types, their aesthetic concerns, and how treatments like Invisalign can help.

What Is a Crossbite?

A crossbite occurs when the upper teeth fit inside the lower teeth when the mouth is closed. This misalignment can affect a single tooth or groups of teeth and can be categorized into anterior and posterior crossbites.

Anterior Crossbite

This involves the front teeth and occurs when the upper front teeth sit behind the lower front teeth.

Posterior Crossbite

This affects the back teeth and happens when the upper teeth sit inside the lower teeth on one or both sides of the mouth.

Crossbite Symptoms

Identifying a crossbite early is crucial for effective treatment. Here are some common crossbite symptoms:

  • Misaligned Teeth: Upper teeth sit inside lower teeth.
  • Jaw Pain: Discomfort in the jaw due to improper alignment.
  • Difficulty Chewing: Problems with chewing food properly.
  • Tooth Wear: Uneven wear on the teeth due to misalignment.
  • Aesthetic Concerns: An uneven or asymmetrical smile.

What Causes a Crossbite?

Understanding the causes of a crossbite can help in prevention and treatment. Here are some common factors:


A family history of dental issues can increase the likelihood of a crossbite.

Delayed Tooth Eruption

Baby teeth that don’t fall out on time can cause permanent teeth to misalign.

Thumb sucking and Pacifier Use

Prolonged use of pacifiers or thumb-sucking can affect the alignment of teeth.

Mouth Breathing

Chronic mouth breathing due to nasal obstruction can influence jaw development and alignment.


Injury to the jaw or teeth can lead to misalignment.

Types of Crossbite

Anterior and Posterior Crossbite

Anterior Crossbite

Involves the front teeth and is characterized by the upper front teeth sitting behind the lower front teeth. This can affect speech and appearance significantly.

Posterior Crossbite

Affects the back teeth and can occur on one side (unilateral posterior crossbite) or both sides (bilateral posterior crossbite). This type of crossbite can lead to jaw pain and difficulties in chewing.

Posterior Crossbite: Unilateral and Bilateral

Unilateral Posterior Crossbite

When the misalignment affects only one side of the mouth. This can cause the jaw to shift to one side, leading to facial asymmetry.

Bilateral Posterior Crossbite

When the misalignment affects both sides of the mouth. This type often results in broader implications for oral function and aesthetics.

Aesthetic Concerns

Crossbites can have significant aesthetic concerns. A misaligned bite can lead to an uneven smile, which can affect self-esteem and confidence. The “crossbite smile” often appears asymmetrical, which can be a primary concern for many seeking orthodontic treatment.

Crossbite Treatment Options

Can Invisalign Fix a Crossbite?

One common question is whether Invisalign can fix a crossbite. The answer is yes, in many cases. Invisalign and crossbite treatment involve using clear aligners that are custom-made to fit your teeth and gradually move them into the correct position.

Invisalign and Crossbite

Invisalign is effective for treating both anterior and posterior crossbites. The aligners are nearly invisible and can be removed for eating and cleaning, making them a popular choice for adults and teenagers.

Cross bite Before and After

The transformation achieved through crossbite treatment can be significant. Cross bite before and after photos often show dramatic improvements in alignment and appearance, contributing to better oral health and a more aesthetically pleasing smile.


Understanding what is a crossbite, along with its symptoms, causes, and treatment options, is essential for anyone affected by this common dental issue. Whether it’s an anterior or posterior crossbite, addressing it early with appropriate treatment, such as braces or Invisalign, can prevent further complications and improve both function and aesthetics.

If you suspect you have a crossbite, consult with an orthodontist to explore your treatment options. With the right care, you can achieve a healthy, beautiful smile and alleviate any associated discomfort or aesthetic concerns.

Transform Your Smile with Infinite Orthodontics

At Infinite Orthodontics, we’re committed to helping our patients achieve the smile they’ve always wanted. With our advanced treatment technology and expert orthodontic team, we offer a range of services, including Invisalign, braces for teens and adults, and surgical orthodontics. Whether you’re dealing with crowded teeth or other orthodontic concerns, we’re here to guide you through your orthodontic journey with precision-crafted smiles and guaranteed smile satisfaction.

Schedule a consultation with us today and take the first step towards a confident, beautiful smile that lasts a lifetime!

Schedule your appointment at: https://infiniteortho.com/appointments/ 

For inquiries and information, explore our website: https://infiniteortho.com/ 

Contact Us: (972) 931-9998 


The information provided in this guide is for informational purposes only and should not be considered medical advice. It’s essential to consult with a qualified orthodontist to assess your specific orthodontic needs and determine the most suitable type of braces for your treatment. Additionally, treatment outcomes may vary depending on individual factors, and your orthodontist will provide personalized recommendations based on your unique circumstances.