Snoring is often mistakenly considered a harmless phenomenon, which can at most generate relational problems. It can give rise to a syndrome, Obstructive sleep apnea syndrome (Osas), characterized by dangerous sleep apneas. The therapy includes the simple adoption of different lifestyle rules, such as weight loss, limiting the use of alcohol and sedatives, not having abundant dinners and not too close to bedtime, up to rather invasive surgical therapies. A non-surgical alternative can be represented using a mandibular advancement device called Mad, a sort of anti- snoring bite to be worn at night, the purpose of which is to internalize the mandible to increase the posterior air patency.