Somnowell Chrome - Research

Somnowell Chrome Follow Up Study

In a longitudinal follow up study reported at the 2010 World Orthodontics congress patients using the Somnowell Chrome reported in excess of a 90% success rate and exceptionally high compliance levels.


  • 95% report that they still wear the Somnowell Chrome each night
  • 97% report no problems breathing whilst wearing Somnowell Chrome
  • 95% report that their snoring has improved
  • 95% report no problems sleeping whlist wearing Somnowell Chrome
  • 80% report better quality sleep

MRI Scans of Patient Wearing a Mandibular Advancement Appliance


Red = without Mandibular Advancement Appliance

Blue = with Mandibular Advancement Appliance

Dynamic MRI images courtesy of Dr Marc Le Fevre and Dr Boris Petelle. MRI made in Saint Antoine's Hospital in Paris.

Research Papers

Chrome cobalt mandibular advancement appliances for managing snoring and obstructive sleep apnoea
S.P. Ash & A.M. Smith: Journal of Orthodontics, volume 31 2004, pages 295 -299.

Ash S. A chrome cobalt mandibular advancement appliance for snoring and obstructive sleep apnoea used during active aligner orthodontic treatment.
J of Orthod; 2020 Page 1Page 2Page 3Page 4

The role of orthodontics and Oral and Maxillofacial surgery in the management of OSA - a single case report D. Patel, S. Ash & J. Evans: British Dental Journal, volume 196 March 13 2004, pages 264-267.

Non–Apneic snoring and the orthodontist: the effectiveness of mandibular advancement splints
A.M. Smith & J.M. Battagel: Journal of Orthodontics, volume 31 2004, pages 115 -123.

The effect of a mandibular advancement splint in subjects with sleep-related breathing disorders
A. Johal, D. Arya, L.J. Winchester, P.L.H Venn & H. Brooks: British Dental Journal, volume 199 November 12 2005, pages 591-595.

Non-CPAP therapies in obstructive sleep apnoea: mandibular advancement device therapy
Marie Marklund, Johan Verbraecken, Winfried Randerath European Respiratory Journal 2012 39: 1241-1247

Titrated mandibular advancement versus positive airway pressure for sleep apnoea
F. Gagnadoux, B. Fleury, B. Vielle, B. Petelle, N. Meslier, X.L. N'Guyen, W. Trzepizur, & J.L.Racineux: European Respiratory Journal, volume 34 2009, pages 914-920.

Oral appliances for snoring and obstructive sleep apnoea: a review
K.A. Ferguson, R. Cartwright, R. Rogers, W. Schmidt-Nowara: Sleep, volume 29 No 2 2006, pages 244-262.

The Somnowell Chrome boasts a success rate of over 90%, as evidenced by a longitudinal follow-up study reported at the 2010 World Orthodontics Congress. Patients reported high compliance levels, improved snoring, and better quality sleep while using the Somnowell Chrome. Here are two MSc research dissertations submitted in 2018. They were independent investigations by two students that verified the success of the Somnowell device:  EH BP1062417 & PE BP1062357