If you have an underbite or, in other words, your upper front teeth are behind your lower front teeth, that is a “reverse overjet”.

Reverse overjet occurs when the lower jaw is ‘oversized’, or the upper jaw is undersized or a combination of both. This usually results in the front teeth biting the wrong way around.

Sometimes referred to as a reverse overjet, an underjet is technically a type of underbite. However, it is characterized by lower teeth that protrude or splay out.

Anterior crossbite or reverse overjet is the term used to describe an abnormal labiolingual relationship between one or more maxillary and mandibular incisor teeth.

Anterior crossbite: If the one or more of the lower incisors are in front of the upper incisors, the condition is called reverse overjet or anterior crossbite.