Thumb-sucking or the use of a dummy frequently produce large overbite of the anterior teeth, or deteriorates an existing retroposition of the mandible. The oral screen can avoid these habits. It can help to make a change from oral to nasal breathing. – It helps training children with swallowing problems, habits, or biting / sucking lips. – It can be used as a preventive method, even in cases where there aren’t signs of malocclusion.