This patient had some of the upper front teeth bite behind the lower front teeth, this is also called an anterior crossbite.

Class II is also called an overbite, when the lower back teeth bite too far behind the upper creating an overbite in the front.

Crowding in the front teeth with good molar relationship.

The upper teeth overlap the lower teeth too much, creating a deep bite.

Spacing between the front teeth.

Mild spacing.

Mild crowding.

Moderate crowding.

Moderate spacing.

An open bite is when the front teeth do not overlap properly.

Overbite and crowding, followed by restorative treatment to fix shape and discolorations.

Crossbite and crowding.

Severe crowding.

Severe gapping and spacing.