Obstructive sleep apnoea syndrome (OSAS) is a sleep disorder characterised by excessive snoring, periodic breathing with repetitive apnoeas, hypopneas, and frequent arousals leading to fragmented sleep. Therapeutic interventions include weight loss, abstinence from alcohol, nasal continuous positive airway pressure (CPAP), uvulopalatopharyngoplasty, maxillomandibular surgery, or tracheostomy. However, many of these therapeutic modalities are limited by patient compliance, lack of efficacy, or serious side effects. Thus, oral appliances (OA) are thought of as alternative therapies for patients with OSAS. Though they have been proven to be a potentially effective option in mild to moderate cases of OSAS for some patients, there is not enough evidence to prove that they are effective in the treatment of severe OSAS. We report a case of severe OSAS treated with mandibular advancement appliance (MAA) as an alternative therapy to CPAP.
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