[Maxillomandibular advancement surgery in severe OSAS].

Obstructive Sleep Apnea Syndrome (OSAS) is a common underdiagnosed pathology. Its consequences are serious, especially in terms of quality of life and cardiovascular risk. This article describes the case of a patient having a severe OSAS. The conservative treatments as well as uvulopalatopharyngoplasty did not improve the symptomatology in an acceptable way. This clinical case illustrates the effectiveness of maxillomandibular advancement for patients with severe OSAS who respond poorly to conservative treatments.