Premium Nahrungsergänzungsmittel | artgerecht

Crossbite: Causes, Symptoms & Treatment

A crossbite is a dental misalignment where upper and lower teeth do not meet correctly. It can strain the jaw, chewing muscles, and teeth if left untreated.

Regular tips about health Regular tips about health

Things worth knowing about "Crossbite"

A crossbite is a dental misalignment where upper and lower teeth do not meet correctly. It can strain the jaw, chewing muscles, and teeth if left untreated.

What Is a Crossbite?

A crossbite is a type of dental malocclusion in which one or more upper teeth bite inside the lower teeth instead of outside them, as they normally should. In a healthy bite, the upper teeth slightly overlap the lower teeth on the outside. When this relationship is reversed or disrupted, a crossbite exists.

A crossbite can occur on one side (unilateral) or both sides (bilateral) of the mouth and can affect either the back teeth (posterior crossbite) or the front teeth (anterior crossbite).

Causes

The causes of a crossbite can be genetic or environmental in nature:

Genetic predisposition: Inherited jaw shape or tooth size discrepancies can lead to a crossbite.
Prolonged thumb sucking or pacifier use: Habits that extend beyond the age of two can negatively affect jaw development.
Chronic mouth breathing: Often caused by enlarged tonsils or nasal polyps, this can restrict the growth of the upper jaw.
Early loss of primary teeth: When baby teeth are lost prematurely, adjacent teeth may shift, contributing to a crossbite.
Skeletal causes: A narrow upper jaw or a relatively wide lower jaw can create a bone-based crossbite.

Symptoms

A crossbite does not always cause discomfort, but common signs and symptoms include:

Visible misalignment of the teeth when smiling or opening the mouth
Jaw joint pain or clicking sounds when chewing
Uneven wear on tooth surfaces
Headaches and neck pain due to muscle imbalance
Difficulty biting or chewing food
Facial asymmetry or jaw displacement, especially in unilateral crossbites
Teeth grinding (bruxism) associated with jaw misalignment

Diagnosis

A crossbite is diagnosed by a dentist or orthodontist using a combination of methods:

Clinical examination: Visual assessment of the bite and tooth position at rest and when biting down.
Dental impressions or digital jaw models: Used for detailed analysis of the bite relationship.
X-rays: Panoramic radiographs or lateral cephalometric X-rays to evaluate bone structures of the jaw.
Cone-beam computed tomography (CBCT): Used in complex skeletal cases for three-dimensional imaging of the jaw.

Treatment

Early treatment of a crossbite is recommended, as correction is more straightforward during childhood when the bones are still growing. Treatment options depend on the severity and underlying cause:

Orthodontic Treatment

Rapid palatal expander (RPE): A fixed device that gradually widens the upper jaw. Most effective in children and adolescents.
Removable appliances: Active plates or functional orthodontic devices to guide jaw development.
Fixed braces (brackets): Used to move individual teeth into the correct position.
Clear aligners: A discreet alternative to traditional braces for mild to moderate cases.

Surgical Treatment

In adults or cases with significant skeletal discrepancies, orthognathic surgery (corrective jaw surgery) may be required to reposition the jawbones.

Combined Treatment

Many cases benefit from a combination of orthodontic treatment and surgical intervention to achieve optimal functional and aesthetic results.

When to See a Doctor

Parents should have their children evaluated by an orthodontist starting around school age if a crossbite is suspected. Adults experiencing jaw pain, headaches, or visible dental misalignment should also seek professional advice. Early intervention helps prevent long-term damage to the teeth, jaw, and surrounding muscles.

References

Proffit WR, Fields HW, Sarver DM: Contemporary Orthodontics. 6th Edition. Elsevier, 2018.
American Association of Orthodontists (AAO): Crossbite Information for Patients. Available at: www.aaoinfo.org
World Health Organization (WHO): Oral Health. Available at: www.who.int/health-topics/oral-health

Building Blocks for a Healthy Life

As an integrated manufacturer, we develop & produce evidence-based, patented, and non-patented formulations. We work exclusively with plant and natural extracts according to the strictest purity & quality standards.
The combination of science & modern technology with the laws of nature creates solutions consistently tailored to humans – for the highest good: health.