• Orofacial myofunctional disorders are variations from the normal function of the muscles associated with the mouth and include the following:

    • Abnormal tongue rest posture
    • Abnormal swallow
    • Lack of a lip seal (this can cause abnormal tongue rest posture)
    • Abnormal chewing
    • Poor oral habits include, but are not limited to:
      • thumb or finger sucking
      • blanket or clothes sucking
      • lip sucking
      • lip licking
      • lip biting
      • lip pursing or tightening
      • soother or pacifier use
      • pen or pencil biting
      • nail biting
      • abnormal tongue rest posture
      • abnormal swallow
      • mouth breathing
      • overuse of facial muscles with chewing and swallowing
      • open mouth chewing
  • These orofacial myofunctional disorders appear to adversely affect the growth of the face and the teeth.