Tongue Thrust - Tongue thrust is one of several terms describing a
swallowing pattern in which the individual pushes the tongue against or
between the teeth. It also refers to inappropriate forward tongue placement
 at
 rest or during speech. This disorder has been referred to in the literature
 as
deviant swallow, reverse swallow, oral myofunctional disorder, visceral
swallow, and abnormal swallow.

Typically, the tongue rests with the tip against the roof of the mouth and the
body of the tongue touching the molars. When a swallow occurs, the tongue
pushes up and back to clear the saliva. Any deviation from this pattern may
indicate tongue thrust.