The invention relates to a dental applianceincludes an attachment mechanism (6,7； 406) suited to attachthe appliance on the teeth of a patient's upper jaw. Theappliance includes a constraining mechanism (4,40,41；408) linked to said attachment mechanism, where the constrainingmechanism is suited to limit the movement of acentral zone of the tongue and allow the anterior and lateraledges of the patient's tongue to perform movements necessaryfor speech and swallowing.
