Many children with a narrow upper dental arch benefit from a palatal expander. Learn when orthodontists recommend treatment and the signs parents should watch for.
A palatal expander is an orthodontic device that slowly widens the upper jaw. It creates more space for teeth and helps the upper and lower jaws align properly.
This treatment works best during childhood when the jaw bones are still developing, typically between ages 6 and 12.
When upper teeth sit inside the lower teeth during biting, the upper jaw may be too narrow.
Not enough space in the jaw can cause teeth to overlap or grow in crooked.
A tall and narrow roof of the mouth often indicates limited upper jaw width.
Some children with narrow arches experience mouth breathing or airway problems.
Orthodontic organizations recommend children receive an evaluation around age 7. Early detection allows orthodontists to guide jaw growth and prevent more complex treatments later.