INVISALIGN® BEFORE AND AFTER Before After This patient had some of the upper front teeth bite behind the lower front teeth, this is also called an anterior crossbite. Before After Class II is also called an overbite, when the lower back teeth bite too far behind the upper creating an overbite in the front. Before After Crowding in the front teeth with good molar relationship Before After The upper teeth overlap the lower teeth too much, creating a deep bite. Before After Spacing between the front teeth. Before After Mild spacing. Before After Mild crowding. Before After Moderate crowding. Before After Moderate spacing. Before After An open bite is when the front teeth do not overlap properly. Before After Overbite and crowding, followed by restorative treatment to fix shape and discolorations. Before After Crossbite and crowding. Before After Severe crowding. Before After Severe gapping and spacing.