Figure 5: (A) Diagram representing the position of the tongue and the hyperactivity of the muscles attaching the tongue and the mandible to the hyoid bone in open bite. A situation like that favours a clock-wise rotation of the mandible. (B) Diagram representing the relaxation of the muscles attaching the tongue and mandible to the hyoid bone when the tip of the tongue is placed on the incisive papilla region. This change in the position of the tongue favours a counter clock-wise rotation of the mandible.