An orthotic device (100) for retaining a patient's mandible in an advanced or protrusive position comprises an intraoral anterior mandibular abutment surface (125) for resisting mandibular retraction by abutting the gingiva covering the mandible and an extramaxillary anterior maxillary abutment surface...http://www.google.es/patents/US7841346?utm_source=gb-gplus-sharePatente US7841346 - Method and device for mandibular advancement
