An underbite is characterized by the lower jaw extending out, causing the lower front teeth to sit in front of the upper front teeth.

Spacing problems may be caused by missing teeth, or they may only be a cosmetic or aesthetic issue.

Upper Front Teeth Protrusion
The appearance and function of your teeth are impacted by this type of bite. It is characterized by the upper teeth extending too far forward or the lower teeth not extending far enough forward.

Crowding occurs when teeth have insufficient room to erupt from the gum. Sometimes crowding is addressed by displacing teeth toward the back of the dental arch if space is available. There are occasions when the front teeth (the incisors) can be moved forward slightly to increase the perimeter of the dental arch; however, this motion is often limited by the thin amount of bone that covers the roots of these teeth. The orthodontist must carefully plan each case individually to insure that the teeth are located within the dental arch to preserve bone support. Expanding a dental arch to create space is ill-advised since there is very little room obtained in the front of the mouth. There are occasions when tooth removal (certain premolars) should be considered to create adequate arch length to relieve crowding.

The upper teeth sit inside the lower teeth, which may cause tooth stratification and misaligned jaw growth.

The upper front teeth extend out over the lower front teeth, sometimes causing the lower front teeth to bite into the roof of the mouth.

Proper chewing is impacted by this type of bite, in which the upper and lower front teeth do not overlap. Openbite may cause a number of unwanted habits, such as tongue thrusting.

Dental midlines not matched
This type of problem is caused when the back bite does not fit and match appropriately, which may negatively impact jaw and proper dental function.