A type of malocclusion (bad bite) where one or more of the upper teeth fit inside the lower teeth when biting down. Normally, the upper arch should be wider and sit outside the lower arch.

Why It Matters

If untreated, it causes the jaw to shift to one side (asymmetry), uneven wear on teeth, and gum recession. In growing children, it can permanently distort facial skeletal growth.

Clinical Details

• Anterior Crossbite: Upper front teeth sit behind lower front teeth (often confused with underbite).
• Posterior Crossbite: Upper back teeth sit inside lower back teeth.

FAQ

What is a crossbite?

A misalignment where top teeth bite inside bottom teeth.

Can Invisalign fix crossbite?

Yes, clear aligners are highly effective for dental crossbites by expanding the arch. Skeletal crossbites may require surgery or expanders.

How to fix a crossbite?

Palatal expanders (for widening the jaw) or orthodontics (Braces/Aligners) to tip teeth into correct positions.