The most common type of a crossbite occurs when the upper teeth bite inside of the lower teeth (toward the tongue) in the back of the mouth. Crossbites can affect one or many teeth.
How can a crossbite be corrected?
If there is a single tooth crossbite, the tooth can be moved with braces into the correct position. With multiple teeth in the crossbite, a palatal expander is most commonly used when patients are between the ages of seven and eleven years old.