Snoring and Sleep Apnea Appliances

Obstructive Sleep Apnea is a debilitating sleep- related breathing disorder defined as the cessation of breathing for over 10 seconds or more. During sleep, the body’s muscles relax causing the soft tissue of the airway to collapse, obstructing the airway. The body reacts to the closure of the airway by disrupting deep sleep enough to start breathing again, depriving the sufferer of getting a “good night’s sleep.”  

Products EMAObstructive Sleep Apnea (OSA) afflicts more than 40 million Americans. Untreated, OSA can lead to heart disease, strokes and excessive daytime sleepiness. At least 80 million Americans snore (snoring is a sign of restricted airflow and impeded breathing during sleep), which can result in excessive day time sleepiness, and adversely affect the sleep quality of the sleep partner. 

The American Academy of Sleep Medicine now recommends oral appliances such as EMA as a front line of treatment for snoring and sleep apnea, and in cases where CPAP (Continuous Positive Airway Pressure) has not been tolerated. What people like about oral appliances is that they fit entirely inside the mouth, they are portable, they do not use electricity or make noise that would bother a sleeping partner, and they allow the wearer to change sleep positions. EMA is FDA approved for the treatment of both Obstructive Sleep Apnea and snoring.

EMA offers advantages not found in other oral appliances:

-You can drink water while wearing it.

-It is completely free of metal and the EMA elastic straps are latex free.

Snore Cartoon

-You can easily change the EMA elastic straps yourself; no additional trips to the dentist needed

EMA works by opening the bite and gently advancing the mandible (or jaw) with elastic straps to increase airway space.


“EMA offers advantages not found in other oral appliances.”

This custom made oral appliance is simple to make, just two impressions and in about a week and a half you can enjoy a silent night.

Sleep Apnea


“I knew I snored and I was getting ready for a transatlantic flight. I was worried that I would keep everyone awake on the plane. To my relief, the EMA snoreguard is great and I felt better the next morning.” – Elizabeth F.

Closed Airway PictureOpen Airway Picture

Mechanism of Action

Mandibular repositioning devices (MRDs) hold the lower jaw in a forward position during sleep. In doing so, they:

  • Create an anterior movent of suprahyoid and genioglossus muscles. (The suprahyoid muscle widens the oesophagus during swallowing and the genioglossus muscle depresses and protrudes the tongue
  • Decrease the gravitational effect of the tongue
  • Stretch the soft palate
  • Stabilize the mandible to the hyoid bone. (The hyoid bone attaches to the muscles of the floor of the mouth and the tongue above; to the larynx below; and to the epiglottis and pharynx behind. This results in an increase in lateral pharyngeal cross-sectional area upper airway muscle activity to prevent snoring and obstructive apneas).

Resmed Snore Guard

With Narval CC, the posterior rotation axes are elevated, making the connecting rods parallel to a patient’s jawline, and allowing the retention force to work along the occlusal plane. In their biomechanical simulation study, Cheze et al1 showed this articulation to create 10% less stress on the TMJ than a conventional compression-based device and to sustain mouth-closing and physiological breathing during sleep.

Resmed Snore Guard

Clinical studies show that custom-made MRDs are effective in treating mild to moderate obstructive sleep apnea and snoring. They reduce symptoms that go with OSA too, like daytime sleepiness and fatigue. MRDs also help people with severe OSA who have not been able to adhere to continuous positive airway pressure (CPAP) treatment.


NarvalTM CC

Customized MRD wit

h an innovative design using advanced CAD/CAM technology

Narval Snore Guard