How does it work. Mandibular advancement devices mads open the airway by moving the. Cpap Machine Vs Oral Appliance Mandibular Advancement Devices The most widely used mouth device for. Mandibular advancement device sleep apnea . A mandibular splint or mandibular advancement splint is a prescription custom made medical device worn in the mouth used to treat sleep related breathing disorders including. These devices which must be fitted by a dentist or orthodontist and worn in the mouth at night include. The mandibular also referred to as the mandible is a jawbone and the mandibular advancement device aims to advance or move it forward. We have investigated subjective side effects and orthodontic changes documented by means of cephalographies and dental plaster casts during treatment of obstructive sleep apnea with mandibular advancement devices over 12 to 30 mo. If you struggle with snoring or sleep apnea a mandibular advancement device may be just what you need to put an ...