What are the consequences of a small jaw in adulthood if not addressed during the early years of life?

The jaws are essential to life. The maxilla (upper jaw) has joints with almost all the bones of the skull, including the orbit, the cranial base, the temporal, and the nasal, to name just a few. Therefore a constriction of the upper jaw will have repercussions on the whole skull and neck. A small jaw will also cause airway distress due to insufficient tongue space, and a multitude of other orthodontic problems.