A tongue thrust and a low, forward rest position of the tongue tip often occur together. When a tongue thrust is observed with a malocclusion, it’s commonly presumed that the tongue thrust caused the teeth to become out of alignment. But where the tongue tip resides at rest is also an important factor. An abnormal tongue rest position can result in dental changes over time. In the same way that a slight and continuous force is what orthodontists and dentists use to move teeth, continuous and prolonged thrusting and sucking habits can also cause a change in the shape of the palate, the dental arches, and the position of teeth.