In general, the expansion plate is used at the beginning of a treatment to create space in the upper jaw by expanding the palate.
This appliance can also make tipping movements such as moving a tooth forwards that is trapped behind the bite.
It is most commonly used for interceptive treatment on young patients who are not yet ready for a comprehensive correction
but needs some early intervention to prevent other problems developing.
The plate is to be worn 22 hours per day and removed only for eating and cleaning.