Expansion
Expansion is used to help develop the face as well as make room for permanent teeth. It has also been shown to increase nasal airway volume and improve the ability of children to breathe properly through their noses. Mouth breathing throughout development can negatively affect the way the face grows. Improving this early in development can change how the face grows, and in addition, it creates space for all of the permanent teeth that are likely too crowded to align themselves properly.