A stylized illustration outline indicating movement or adjustment to the left and right

Palatal Expansion

Making room by addressing width.

When the upper jaw is too narrow relative to the lower jaw, simply aligning the teeth may not address the underlying transverse problem.

In a growing child, palatal expansion can increase upper-jaw width and improve the relationship between the upper and lower arches. Growth gives us a valuable opportunity to make that correction.

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An orthodontist shows a child a diagram of a mouth on a computer monitor during a dental consultation, with the child's mother standing nearby.

Why a child may need an expander

A palatal expander may be recommended when Dr. Martin identifies a transverse discrepancy such as a posterior crossbite, a narrow upper jaw or a functional shift associated with the bite.

Expansion may also be part of a broader plan to improve arch development, create a more appropriate relationship for erupting permanent teeth and establish a better foundation for future orthodontic treatment.

The recommendation is based on the child's specific diagnosis and development.

Diagram of a palatal expander and teeth, with arrows indicating the adjustment direction.

How palatal expansion works

In a growing patient, the right and left sides of the upper jaw meet at the midpalatal suture. During growth, this area is generally more responsive to expansion than it is after skeletal maturity.

A palatal expander applies controlled forces across the upper arch to create the width prescribed for the individual treatment plan while growth biology is favorable.

Parents receive specific activation and hygiene instructions based on the appliance being used.

Orthodontist performing a dental examination on a young boy lying in a dental chair, in a modern dental office.

The right age for expansion

There is no single birthday that determines when expansion should begin. The right timing depends on the child's growth, dental development, skeletal maturity and the transverse problem we are trying to correct.

In growing children, identifying a meaningful transverse discrepancy early gives us the opportunity to work with growth while the developing structures are more responsive.

Rather than waiting for a particular age, we evaluate each child individually and recommend treatment at the time we believe offers the best opportunity for effective correction.

Early Evaluation

What families should expect

Most children adapt quickly to an expander, although speech, chewing and saliva can feel different for the first several days. Temporary pressure is expected during activation.

Checkmark icon in a blue outline with a green background.

Keeping the appliance and surrounding teeth clean is important, and Ferrari Orthodontics will monitor the bite and expansion response throughout treatment.

A space may temporarily appear between the upper front teeth during expansion. Whether that occurs - and how it is managed afterward - depends on the patient and appliance.

Expansion addresses more than alignment.

When a transverse discrepancy is present, expansion gives us the opportunity to address the width of the upper jaw itself and improve the relationship between the arches.

The appliance is selected after the diagnosis.

The opportunity is recognizing the problem early enough to use growth to our advantage.