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Comparative Efficacy Study of Titratable Versus Active Mandibular Advancement Splint in Sleep Apnea (SOMNYX)

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ClinicalTrials.gov Identifier: NCT02112435
Recruitment Status : Recruiting
First Posted : April 14, 2014
Last Update Posted : May 2, 2017
Information provided by (Responsible Party):

Study Description
Brief Summary:
Sleep apnea is a common disorder that occurs in 3-10 % of the adult population. This disorder disrupts the architecture and quality of sleep. Continuous positive airway pressure (CPAP) therapy is the standard treatment, but in some cases, it can not be used (patient refusal or intolerance). In these cases, treatment with mandibular advancement devices can bring an improvement in symptoms. Therefore, this study aims to compare the effectiveness of titratable versus active mandibular advancement splints in standard care environment. This will be based on the global response, which includes the apnea-hypopnea index and compliance in severe apnea patients who refused or where intolerant to CPAP. Following their severe apnea diagnosis and the assessment on the feasibility of placing a mandibular advancement device, follow-up visits will be scheduled after 3 months of treatment involving clinical monitoring by a physician and a dentist.

Condition or disease Intervention/treatment
Obstructive Sleep Apnea Device: Somnyx ® Device: Narval ORM ® or SomnoDent ®

Study Design

Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 100 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Comparative Study of Efficacy of Titratable Mandibular Advancement Splint Versus Active Mandibular Advancement Splint to Treat Patients With Obstructive Sleep Apnea
Study Start Date : August 2014
Estimated Primary Completion Date : August 2018
Estimated Study Completion Date : August 2018

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Sleep Apnea
U.S. FDA Resources

Arms and Interventions

Arm Intervention/treatment
Active Comparator: Narval ORM ® or SomnoDent ®
Mandibular advancement splint (Narval ORM ® or SomnoDent ®)
Device: Narval ORM ® or SomnoDent ®
Mandibular advancement splint
Other Names:
  • Mandibular advancement splint
  • Mandibular advancement appliance
  • Oral appliance
  • Mandibular repositioning appliance
  • Mandibular repositioning splint
Experimental: Somnyx ®
Active mandibular advancement splint (Somnyx ®)
Device: Somnyx ®
Active mandibular advancement splint
Other Names:
  • Active mandibular advancement appliance
  • Oral appliance

Outcome Measures

Primary Outcome Measures :
  1. Overall response rate [ Time Frame: following 3 months of treatment ]
    Overall response rate (ORR) = rate of complete response (TRc) + partial response rate (PRR) =% of patients with AHI <15 or ≥ 50% reduction in AHI and compliance ≥ 5 nights / week and 5 hours / night

Secondary Outcome Measures :
  1. Rate of Complete Response [ Time Frame: following 3 months of treatment ]
    Rate of Complete Response (TRc) =% Patients with AHI <15 and AHI ≥ 50% reduction and compliance ≥ 5 nights / week and 5 hours / night)

  2. Partial response rate [ Time Frame: Following 3 months of treatment ]
    Partial response rate =% of patients with reduction AHI ≥ 50% with AHI> 15 or AHI <15 with reduction <50% and adherence ≥ 5 nights / week and 5 hours / night) at 3 months of treatment.

  3. Subjective compliance [ Time Frame: Following 3 months of treatment ]
    Subjective compliance

  4. Sleep quality [ Time Frame: Following 3 months of treatment ]
    sleep efficiency, total sleep time

  5. Desaturation [ Time Frame: Following 3 months of treatment ]
    desaturation index, time spent below 90%

  6. Subjective sleep [ Time Frame: Following 3 months of treatment ]
    Pittsburgh questionnaire

  7. Quality of life [ Time Frame: Following 3 months of treatment ]
    Functional outcomes sleep questionnaire (FOSQ)

  8. Fatigue [ Time Frame: Following 3 months of treatment ]
    Chalder fatigue questionnaire

  9. Subjective daytime sleepiness [ Time Frame: Following 3 months of treatment ]
    Epworth sleepiness score

  10. Side effects [ Time Frame: Following 3 months of treatment ]
    side effects and interactions with the dental evaluations

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • age between 18 and 65 years
  • severe OSA confirmed by polysomnography (PSG) is: 30> AHI> 15 with severe daytime sleepiness - Epworth ≥ 10 or AHI> 30
  • patient in failure or refusal of CPAP treatment
  • agree to participate and sign the consent form research
  • speak and understand French without external assistance
  • be in good health (no neurological or psychiatric syndrome).
  • have a valid Social Security card (in France and Portugal only)

Exclusion Criteria:

  • contra-indicated dental/periodontal states for mandibular advancement splints, such as: 1) significant edentulism (less than 3 healthy teeth / quadrant), 2) generalized periodontitis or severe parodonthopathies, 3) severe disorders of the temporomandibular joint (TMJ), 4) less than 5 mm of maximal mandibular protrusion
  • dental restorations in progress or planned in the next 6 months
  • psychiatric and neuromuscular disorders
  • untreated cardiovascular diseases and history of stroke or myocardial infarction
  • severe or morbid obesity (body mass index> 35)
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02112435

Contact: Nelly Huynh, PhD nelly.huynh@umontreal.ca
Contact: Gilles Lavigne, DMD, PhD gilles.lavigne@umontreal.ca

United States, California
Stanford University Not yet recruiting
Palo Alto, California, United States, 94305
Contact: Christian Guilleminault, MD, Biol.D.       cguil@stanford.edu   
Principal Investigator: Christian Guilleminault, MD, Biol.D         
Canada, Quebec
Université de Montréal Recruiting
Montreal, Quebec, Canada, H3C3J7
Contact: Nelly Huynh, PhD       nelly.huynh@umontreal.ca   
Contact: Gilles Lavigne, DMD, PhD       gilles.lavigne@umontreal.ca   
Principal Investigator: Nelly Huynh, PhD         
Sub-Investigator: Gilles Lavigne, DMD, PhD         
Polyclinique du Tondu Recruiting
Bordeaux, France
Contact: Pierre-Jean Monteyrol, MD       pjmonteyrol@wanadoo.fr   
Principal Investigator: Pierre-Jean Monteyrol, MD         
Sub-Investigator: Jacques Taillard, PhD         
Université Montpellier Recruiting
Montpellier, France
Contact: Yves Dauvilliers, MD       y-dauvilliers@chu-montpellier.fr   
Principal Investigator: Yves Dauvilliers, MD         
Sub-Investigator: Olivier Gallet de Santerre, MD         
Sub-Investigator: Isabelle Bonafé, DMD         
Groupe Hospitalier Pitie-Salpetriere Recruiting
Paris, France
Contact: Carole Philippe, MD       carole.philippe@psl.aphp.fr   
Principal Investigator: Carole Philippe, MD         
Sub-Investigator: Valérie Attalie, MD         
Sub-Investigator: Stéfania Redolfi, MD         
Sub-Investigator: Isabelle Arnulf, MD         
Sub-Investigator: Jean-Marc Collet, MD         
Sub-Investigator: Patrick Goudot, PhD         
Sponsors and Collaborators
Université de Montréal
Groupe Hospitalier Pitie-Salpetriere
University Hospital, Montpellier
Polyclinique de Bordeaux-Tondu
Stanford University
Principal Investigator: Nelly Huynh, PhD Université de Montréal
More Information

Responsible Party: Nelly Huynh, Assistant research professor, Université de Montréal
ClinicalTrials.gov Identifier: NCT02112435     History of Changes
Other Study ID Numbers: 14-011-CERES-D
NH-14SRP-Somnyx ( Other Identifier: Faculté de medecine dentaire, Université de Montreal )
First Posted: April 14, 2014    Key Record Dates
Last Update Posted: May 2, 2017
Last Verified: May 2017

Keywords provided by Nelly Huynh, Université de Montréal:
obstructive sleep apnea
mandibular advancement splint
active mandibular advancement splint
oral appliance

Additional relevant MeSH terms:
Sleep Apnea Syndromes
Sleep Apnea, Obstructive
Respiration Disorders
Respiratory Tract Diseases
Signs and Symptoms, Respiratory
Signs and Symptoms
Sleep Disorders, Intrinsic
Sleep Wake Disorders
Nervous System Diseases