Timing expander treatment is very important. Palatal expanders should ideally be used before the two
separate plates of the palate fuse together in puberty (around age 14-16). Because of this,
expanders may be recommended as early as 6-10 years old, as they typically work best on younger children.
Expansion on younger patients is easier, and there are more options in terms of the type of expanders
that we use. If done early, expansion can be simpler and more effective.
Sometimes, expansion may be delayed until more permanent teeth erupt (12-14 years old),
but it is important to begin treatment with an expander prior the fusion of the upper palate bones.