Orthognathic Jaw Surgery: Underbite, Overbite, Crossbite ...
Underbite: the lower jaw protrudes out significantly causing the lower teeth to overlap the upper teeth, causing what appears to be a large chin. Overbite: the upper teeth overlap the lower teeth forcing the lower jaw backward towards the ears causing small or 'invisible' chin. Crossbite: mis-matched jaw sizes or crooked jaw and teeth ...
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