Crossbite Problems - Symptoms & Dental Treatments

A crossbite is a misalignment between the upper and lower teeth, where the lower teeth sit too far outwards or the upper teeth sit too far inwards, instead of overlapping normally.

It can affect the front teeth (anterior crossbite) or the back teeth (posterior crossbite).

This condition is more than just a minor alignment issue, as it can signal a host of orthodontic problems, including dental crowding and gum recession.

Because crossbites usually develop in the early years and can worsen over time, early detection is key.

What Is A Crossbite?

"Crossbites occur when the upper and lower teeth do not meet correctly, creating an imbalanced bite."

Dr. Joyti Vasudev

Normally, the upper teeth should sit slightly outside the lower teeth when the mouth is closed, creating a natural overlap.

There are two main types of crossbites, including:

• Anterior crossbite: The upper front teeth sit behind the lower teeth.

• Posterior crossbite: The upper back teeth sit inside the lower teeth.

A crossbite can affect a single tooth or several teeth and may occur on one side (unilateral crossbite) or both sides (bilateral crossbite) of the mouth.

The condition can be dental (affecting the position of the teeth) or skeletal (caused by a mismatch in jaw width or position).

Signs And Symptoms Of A Crossbite

Crossbites can be tricky to spot without an in-depth orthodontic assessment, but there are several signs to look out for, including:

• Teeth that don't meet or align properly

• A noticeable shift in bite when the jaw closes

• Asymmetry in the jaw and face

• Excessive tooth wear on certain teeth

• Clicking or discomfort in the jaw joint

• A narrow-looking smile or visible "tilt" in the teeth

• Headaches or jaw tension from uneven bite pressure

A crossbite can also affect your confidence and self-esteem, especially if it impacts your smile or the way your jaw moves when talking.

Early identification, particularly in children, is essential for guiding jaw development and avoiding more complex treatment later on.

What Causes A Crossbite?

Crossbites can develop for a variety of reasons, including:

• Genetics – Family traits strongly influence jaw shape and tooth alignment.

• Childhood habits – Thumb sucking, mouth breathing, and tongue thrusting can all impact jaw development.

• Delayed or abnormal tooth eruption – Crossbites may occur when adult teeth emerge out of position or are crowded.

• Narrow palate or small jaw – A small or underdeveloped upper jaw can cause the upper teeth to sit inside the lower ones.

• Injury or trauma – Damage to the jaw or teeth during the developmental years can alter alignment.

While genetics play a significant role, early habits and jaw development can often determine whether a crossbite becomes more pronounced over time.

Dental Treatments For Crossbite

Crossbites rarely correct themselves, especially once permanent teeth have erupted.

Fortunately, orthodontic treatments can effectively restore a healthy, balanced bite.

The exact approach depends on the patient's age, the type of crossbite, and the underlying cause.

How Do Dentists Fix A Crossbite?

Treatment typically focuses on straightening misaligned teeth and guiding jaw growth (if possible).

Some of the most effective crossbite correction treatments include:

• Removable expanders: Often used in younger patients to widen the upper jaw while it's still developing.

• Fixed expanders: These devices gradually widen the upper jaw to fix posterior crossbites.

• Fixed braces: Brackets and wires can move individual teeth into better alignment. Both ceramic braces and metal braces are used to treat crossbites.

• Clear aligners: In mild to moderate cases, aligners can adjust bite alignment.

• Elastics: Rubber bands attached to braces can help correct bite positions.

• Surgical options: Jaw realignment surgery is an effective option for adults with skeletal crossbites.

Crossbite Treatment Cost & Duration

The cost and duration of crossbite treatment vary widely, depending on the patient's age, severity of the crossbite, and treatment method.

This table below breaks it down:

What Are The Complications If A Crossbite Remains Untreated?

If left untreated, crossbites can lead to gradual but significant oral health issues, such as:

• Uneven tooth wear and enamel corrosion

• Gum disease

• Teeth grinding

• Jaw pain and discomfort

• Gum recession or tooth mobility

• Asymmetric jaw growth in children

• Headaches or muscle strain

• Aesthetic concerns and reduced confidence

Even if crossbite symptoms seem minor, addressing a crossbite early can prevent more complex issues in adulthood.