In most instances, this means that one set of your teeth will either fall inside or outside of the opposing set. For example, your upper teeth may sit inside of the lower teeth when the jaw is closed. Two of the biggest causes of crossbite are heredity and delayed loss of baby teeth. Both of these situations could cause the teeth to be out of the proper position.

Children are often easier to treat because their teeth are still in the process of developing. In extreme cases, surgery may be required to align the jaws.