Using the Sleepwell in a direct comparison against CPAP, Prof. Johal looks at the effectiveness of the mandibular advancement splint to understand its effectiveness in patients diagnosed with moderate obstructive sleep apnoea.

Other studies that may be of interest:

Barnes et al (2004). Efficacy of Positive Airway Pressure and Oral Appliance in Mild to Moderate Obstructive Sleep Apnoea.


Sleepwell - a clinically-proven treatment 

The most patient-friendly MAS on the market with a success rate of over 80% (in fully apnoeic patients), Sleepwell is also the most technically advanced. Tested in a randomised controlled cross-over trial against CPAP and a placebo, the full clinical trial information can be found below.

Sleepwell is fully patient adjustable - a simple adjustment can modify the degree of mandibular advancement,  negating the need for further clinical visits for simple titration. 

Sleepwell is also uniquely designed with internal splint fixing, allowing the lips to be closed around the device, preventing dry lips and excess salivation associated with other splints. High levels of patient comfort meant that during clinical trials over 98% of patients found the device acceptable.

Designed and manufactured in the UK, the device is moulded specifically to patient impressions. 

Key Benefits

  • Internal fixings result in high patient comfort
  • Full-patient adjustment
  • Soft, slim-lined two-piece device meaning full lateral movement 
  • Mitigates potential TMJ stress 
  • In-mouth movement reducing likelihood of dislocation  
  • Clinically proven and effective

CPD-verifiable seminar

Find out more about the Sleepwell on our sponsored 'Snoring - a role for the GDP' with Professor Ama Johal, a doctor with a special interest in snoring.


Pre-screening questionnaire

Download our pre-screening questionnaire for snoring and sleep apnoea



Dr Atherton - GDP in West Yorkshire 

“I have put what I learnt into practice already with successful results so I’m pleased” the lab support from S4S and the quality of the appliance itself has helped give him the confidence to help his patients, “The lab gave excellent advice about the impression materials and once I provided treatment myself, I was impressed with the appliance, it was well made and fitted perfectly. S4S also provide help to gauge the severity of the problem, and to ensure that the patient is suitable for this type of appliance.The treatment has been a great success. This patient actually bought two of the devices so he would always have a spare and I think there is greater domestic harmony now that he and his wife are not forced to sleep in separate rooms because of his disruptive snoring.”

David Thompson - Director Anaplastology

"Earlier in 2009 my company started supplying S4S Sleepwell anti snoring devices to patients with a snoring disorder, and it has proven to be wise decision. 

Since using the Sleepwell anti snoring devices from S4S, our clinicians say that this device is easier to fit, and that patients report higher levels of satisfaction in using the Sleepwell  to solve their snoring problem. Using the Sleepwell has resulted in reducing the clinical time for each patient and improved profitability.

The dedication S4S have to high standards in customer satisfaction through communication and investing in the training of their technical staff has given me confidence in this company and their product. I find that I receive the finished device on time, neatly packed and ready for the clinic. This means that I can make the appointment with the patient to return for the fitting of the Sleepwell with confidence.

Communication with S4S is easy and effective either by telephone or Email. I can talk directly to the technician involved with making a device for a particular patient.

S4S and the Sleepwell anti snoring treatment work efficiently and effectively, and I am delighted with the improvement in patient satisfaction and profitability I have experienced."

Would you like to know more? Request more information, including a potential visit from one of our client support team