Crossbite
This is when a tooth or a number of teeth commonly in the upper jaw are biting inside the lower teeth which is the reverse of the normal. It is often an indication that the top jaw is too narrow when compared to the bottom jaw.
Crossbite Examples
EXPANSION PLATE
Often the treatment involves widening the top jaw to create more bone and space for the alignment of the teeth.
This is usually carried out using an expansion plate bonded to the upper back teeth and braces placed across the upper six front teeth.