Negative oral habits occur for varying reasons. It is important to assess any underlying concerns. Often times thumb sucking can point to a potential airway issue. Someone with airway concerns may be mouth breathing due to nasal obstruction or tethered oral tissues. When a person breathes constantly through their mouth, their tongue is low and forward instead of suctioned to the roof of the mouth. The roof of the mouth craves the constant pressure and sensation of our tongue resting upon it.  When that need is not being met, we seek input in our mouths through other means.  Noxious oral habits may result over time.