The upper teeth should fit outside the lower teeth like a lid on a box. If the upper jaw is too narrow, the lower jaw usually swings to one side to allow the teeth to mesh. A crossbite results.
Crowding is a common orthodontic problem.Crowded teeth can be unattractive and difficult to clean.
An open bite exists when some teeth don’t meet.It can cause eating problems, speech problems, and excessive wear of those teeth which do meet. An open bite can also be unattractive.
Protruded teeth can be unattractive and more prone to damage. The lower front teeth often over-erupt and damage the palate behind the top front teeth.
The lower front teeth protrude beyond the upper teeth. An under bite can be unattractive and can cause uneven wear of the front teeth.
Sucking the thumb (or fingers) can deform nearby teeth and supporting bone.
The upper front teeth cover the lower teeth.A deep bite can cause excessive wear of the front teeth and gum damage behind the upper front teeth
Missing teeth can be very unattractive.By moving all teeth into correct position, proper space can be created to facilitate replacement of the missing teeth.
An orthodontic opinion might also be sought when there is: