Design characteristics of the S1

  1. High sides provide good retention without moulding.

  2. 4 large breathing holes effectively regulate breathing for mouth breathers.

  3. Tongue tag guides the tongue forwards and upwards into the correct position.

  4. Tongue elevator holds the tongue in the correct position.

  5. Air Spring Core™ prevents the jaw joints from locking in place.

  6. Provides optimum jaw position and maximum vertical opening for most patients.

How the S1 works

Myosa® for TMJBDS® S1 works by advancing the sleeper’s lower jaw and opening the bite, which has the effect of opening the airway. Additionally, the Myosa® S1 has four breathing holes at the front to regulate breathing as well as a patented Air Spring Core™ to cushion the jaw joint. For better retention during the night, the patient can use the mouldable version of the S1 appliance (S1M), which provides a tighter, custom-fit due to its dual moulded construction.

Patient Selection
The TMJBDS® appliances are used based on a combination of the patient’s ability to retain the appliances overnight, severity of their breathing dysfunction and their performance of Breath Hold Time activity (BHT). The non-mouldable S1 as well as the S1M (mouldable version) - is used in the first stage of treatment if BHT is less than 20. The S1 appliance provides optimum comfort while the mouldable S1M allows for the best retention. Auxiliary appliances that aid treatment are based on the level of the patient’s joint degeneration and serve as adjuncts to the use of the TMJBDS® appliances. The full protocol is outlined in MRC’s courses and attendance is highly recommended. Additionally, you can download the Myosa® appliance protocol.

Indications for use
Prior to using the Myosa® device, the treating dentist may refer the patient to a medical practitioner for assessment of sleep disorders that have medical implications. The Myosa® intra-oral appliance provides treatment for patients with symptoms of TMJBDS® and is to be used during the day until comfort is achieved. Once accustomed, it should be used for 1 hour per day and overnight while sleeping.

Instructions for use

Do not chew on Myosa® appliance. Initially use the S1 during the day to correct habits. The S1M appliance can be used at night to increase retention.

Cleaning the S1 appliance
The S1 appliance should be cleaned under warm running water every time the patient removes it from their mouth. Use Myoclean™ tablets to correctly clean twice a week. Myoclean™ is the recommended cleaning agent for MRC's appliances.

Appliance use

Works in Conjunction With

the default night time appliance, the Myosa®
S1M (mouldable)

Next Appliance

Myosa® S2

See this appliance

Learning Resources

Myosa® Appliance Protocol

Myosa® Appliance Catalogue

Myosa® S1 Instruction card

Important Points

Intra-oral appliances may change the position of teeth and alter the jaw relationship. Unlike Rigid Mandibular Advancement Devices (MADs), the Myosa® appliances are flexible and minimise the potential to cause pain in the jaw joints or permanently change the bite.

Consultation with a Medical Practitioner is essential to correctly evaluate your condition.