![Mandibular advancement device](https://www.nationalelfservice.net/cms/wp-content/uploads/2021/01/Avance_mandibular-150x150.jpg)
This review of the the effectiveness of different mandibular advancement devices for obstructive sleep apnoea included 50 RCTS. While the findins suggest that mono-bloc MADs are more effective duo-bloc devices the quality of the available evidence is very low.
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