Clinical trial Recruiting at 1 site Interventional Ages 18 to 75

Using a mandibular advancement device to help with sleep apnea when stopping CPAP

Official title: Impact of the Mandibular Advancement Device on Sleep Apnea Syndrome During Discontinuation of Treatment With Continuous Positive Airway Pressure: Randomized Controlled Trial

Run by University Hospital, Angers · NCT05939934 · Data updated 2026-11-12

This study is testing if a mouthpiece can help people with sleep apnea manage their symptoms and heart health when they stop using their CPAP machine for a short time.

Quick facts

Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment40 (estimated)
SponsorUniversity Hospital, Angers
Government
Locations1 site (Angers)
StatusRecruiting
StartedMarch 5, 2024
Main results expectedNovember 2026
Study endsNovember 2026
Registry record updatedApril 6, 2026
Trial IDNCT05939934 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are patients with severe obstructive sleep apnea who have been treated with CPAP for more than 12 months and have excessive daytime sleepiness.

Probably not a fit

Patients with severe daytime sleepiness, central apneas, or significant comorbidities may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial investigates the effectiveness of a mandibular advancement device (MAD) as a complementary treatment for patients with obstructive sleep apnea who are temporarily discontinuing continuous positive airway pressure (CPAP) therapy. Patients with severe obstructive sleep apnea, who have been compliant with CPAP for over a year, will be randomized into two groups: one receiving the MAD and the other receiving no specific treatment. Assessments of endothelial function, blood pressure, and sleep quality will be conducted before and after a two-week period without CPAP. The goal is to determine if the MAD can help maintain symptom control and cardiovascular health during CPAP withdrawal.

Why it matters

Potential benefit: If successful, this approach could provide an alternative treatment option for patients struggling with CPAP compliance, potentially improving their quality of life and cardiovascular health.

How similar studies have gone: Previous studies have shown that mandibular advancement devices can be effective in managing obstructive sleep apnea, suggesting potential success for this approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patient accepting MAD treatment
* Patient with an apnea-hypopnea index (AHI) greater than 15 events per hour on the initial recording
* Patient with excessive daytime sleepiness during initial treatment (ESE\>10)
* Patient treated for more than 12 months by CPAP with average compliance greater than 5 hours per night

Exclusion Criteria:

* Initial severe daytime sleepiness characterized
* OSAS with ≥ 5 central apneas per hour of sleep at baseline recording
* Previously diagnosed severe cardiac and/or respiratory pathology:
* Body mass index ≥ 35 kg/m2
* Known contraindication to OAM treatment

Where it's running

  • Angers University Hospital
    Angers, France
    Recruiting

Study contacts

  • Principal investigator: wojciech Trzepizur, MD PHD — University Hospital, Angers
  • Study coordinator: wojciech trzepizur, MD PHD
  • Email: wotrezpizur@chu-angers.fr
  • Phone: +3380575272

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.