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Obstructive Sleep ApneaSUNRISE-ORTHONCT07910461

Orthognathic Surgery and Obstructive Sleep Apnea Assessed by Mandibular Jaw Movement Monitoring (SUNRISE-ORTHO)

An observational study of Obstructive Sleep Apnea and Sleep Apnea, Obstructive, run by CHR Sambre et Meuse Site Meuse at 1 site in Belgium.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

Orthognathic surgery changes the skeletal framework of the upper airway, but its functional effect on sleep-disordered breathing remains poorly documented, particularly with respect to respiratory effort. Read more about this study

Who is it for?
Ages 15 years and older
What is being tested?
Orthognathic surgery (BSSO with or without Le Fort I osteotomy), Sunrise mandibular jaw movement monitoring and Facial multidetector CT in natural head position
How many people
25 participants
Where
1 siteBelgium
Study dates
4 Nov 2026to 15 Sep 2027
Phase
Observational
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 15 years and older
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Study population: Patients aged 15 years or older referred to the maxillofacial surgery department of CHR Sambre et Meuse, Meuse site (Namur, Belgium), and scheduled for orthognathic surgery after orthodontic-surgical multidisciplinary assessment.

Who may be able to join

  • Dentoskeletal deformity requiring bilateral sagittal split osteotomy with or without Le Fort I osteotomy after orthodontic-maxillofacial multidisciplinary assessment.
  • Age 15 years or older at consent, with completed skeletal growth according to department practice.
  • Positive two-step screening for sleep-disordered breathing risk: (1) STOP-BANG score >= 3 and/or high risk on the Berlin questionnaire; and (2) on the first Sunrise night at 1 month before surgery, AHI >= 5 events/h or REMOV >= 15% of total sleep time.
  • Signed informed consent (co-signed by holders of parental authority for minors). - Ability to use the Sunrise device at home.

Who cannot join

  • Medical or anesthetic contraindication to orthognathic surgery.
  • Known severe sleep-disordered breathing (AHI >= 30/h) treated preoperatively with CPAP or a mandibular advancement device.
  • Syndromic craniofacial malformation (e.g., Crouzon syndrome, Pierre Robin sequence).
  • Known allergy or skin intolerance to the Sunrise sensor materials or adhesive, or active dermatosis of the submental area.
  • Current pregnancy or breastfeeding.
  • Concurrent participation in another interventional study likely to interfere with sleep measurements or surgical outcomes.
  • Inability to comply with the planned visits and procedures.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Jerome Decaux, MD contact

0032474523674

jerome.decaux@chrsm.be

Belgium1 site
  • CHR Sambre et Meuse - Site Meuse, Avenue Albert Ier 185, Namur, 5000, Belgium

    Namur, Namur, 5100

    Jerome Decaux, MD, 0032474523674, jerome.decaux@chrsm.be

Other trials in Belgium

About this study

Official title: Effects of Orthognathic Surgery on Respiratory Effort Burden in Obstructive Sleep Apnea Assessed by Indices Derived From Mandibular Jaw Movement Monitoring: A Prospective Exploratory Single-Center Pilot Study (SUNRISE-ORTHO-NAMUR)

Orthognathic surgery changes the skeletal framework of the upper airway, but its functional effect on sleep-disordered breathing remains poorly documented, particularly with respect to respiratory effort. This prospective, exploratory, single-center pilot study will describe changes in the apnea-hypopnea index (AHI) and in respiratory effort burden (REMOV, percentage of total sleep time with increased respiratory effort) measured with the Sunrise mandibular jaw movement (MJM) home sleep monitoring device, from 1 month before to 6 months after orthognathic surgery (bilateral sagittal split osteotomy with or without Le Fort I osteotomy). Twenty-five patients aged 15 years or older, scheduled for orthognathic surgery as part of standard care at CHR Sambre et Meuse (Namur, Belgium) and screened positive for sleep-disordered breathing risk, will be included. Results will be used to generate hypotheses and to size a future confirmatory study.

Read the detailed description

Design: prospective, exploratory, single-center, non-randomized cohort without control group. Surgery is indicated and performed as part of standard care and is not assigned by the protocol; the study adds standardized measurements before and after surgery. Screening and inclusion (two steps): (1) STOP-BANG score >= 3 and/or high risk on the Berlin questionnaire; (2) only if step 1 is positive, a first Sunrise night at 1 month before surgery (T-1 month), considered positive if AHI >= 5 events/h OR REMOV >= 15% of total sleep time. Both steps must be positive for inclusion. The 15% REMOV threshold is an operational screening threshold chosen for this study and is not a validated cut-off. Schedule: T-1 month: virtual surgical planning (IPS CaseDesigner) from intraoral scans, facial multidetector CT in natural head position, clinical parameters, two consecutive Sunrise nights and questionnaires (STOP-BANG, Berlin, ESS, FSS, FOSQ-10, SF-12, EQ-5D-5L). Day 0: bilateral sagittal split osteotomy with or without Le Fort I osteotomy, mandible-first sequence, single surgeon. Postoperative visits at 1 week and 4 weeks. T+6 months: facial CT in natural head position, postoperative virtual analysis, two consecutive Sunrise nights and the same questionnaires. Sample size: 25 participants, based on pilot study recommendations (Sim \& Lewis; Whitehead et al.). Assuming a mean AHI change of about 5 events/h and a standard deviation of 7 events/h, 25 patients provide a 95% confidence interval of approximately +/- 3 events/h around the mean change. Analysis: descriptive and exploratory; paired comparisons between T-1 month and T+6 months; exploratory association between surgical movements and changes in AHI/REMOV. Data are collected on paper source documents and a pseudonymized Excel database at the study site.

Being tested
Orthognathic surgery (BSSO with or without Le Fort I osteotomy), Sunrise mandibular jaw movement monitoring, Facial multidetector CT in natural head position
Keywords
orthognathic surgery, bilateral sagittal split osteotomy, Lefort 1 osteotomy, home sleep apnea testing, respiratory effort, apnea-hypopnea index, mandibular jaw movement, upper airway volume
Medical subject headings
Sleep Apnea, Obstructive, Dentofacial Deformities

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Orthognathic surgery (BSSO with or without Le Fort I osteotomy)Procedure or surgery

    Standard-of-care orthognathic surgery under general anesthesia, mandible-first sequence, planned with 3D virtual surgical planning (IPS CaseDesigner, KLS Martin) and in-house printed splints. Not assigned by the study protocol.

  • Sunrise mandibular jaw movement monitoringDevice

    Chin-mounted MJM sensor (Sunrise, Namur, Belgium) used at home for two consecutive nights before surgery and two consecutive nights 6 months after surgery to derive respiratory and sleep indices.

  • Facial multidetector CT in natural head positionDiagnostic test

    Facial CT at 1 month before and 6 months after surgery for 3D upper airway volume analysis; field restricted to the facial skeleton, dose optimized.

Study groups in NCT07910461
Study groupRoleWhat they receive
Orthognathic surgery cohortPatients aged 15 years or older scheduled for bilateral sagittal split osteotomy with or without Le Fort I osteotomy as part of standard care, with positive two-step screening for sleep-disordered breathing risk. Sunrise monitoring (2 nights) and facial CT are performed 1 month before and 6 months after surgery.
Receives: Procedure: Orthognathic surgery (BSSO with or without Le Fort I osteotomy); Device: Sunrise mandibular jaw movement monitoring; Diagnostic Test: Facial multidetector CT in natural head position

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in apnea-hypopnea index (AHI) measured by mandibular jaw movement monitoring

    AHI (events/h) measured with the Sunrise device; absolute change (T+6 months minus T-1 month) and relative change (%). Only absolute change is reported if baseline AHI < 1 event/h.

    Measured: From 1 month before surgery (baseline) to 6 months after surgery

  2. Change in respiratory effort burden (REMOV)

    Percentage of total sleep time with increased respiratory effort (REMOV, %TST) measured with the Sunrise device; absolute change (percentage points) and relative change (%). Only absolute change is reported if baseline REMOV < 5% TST.

    Measured: From 1 month before surgery (baseline) to 6 months after surgery

Secondary outcomes (11)
  1. Change in Oxygen Desaturation Index (ODI)

    Number of oxygen desaturation events per hour of sleep (events/h), recorded during home sleep testing with the Sunrise system. This is a physiological index, not a scale score; higher values indicate more severe nocturnal hypoxemia (worse outcome).

    Measured: From 1 month before surgery (baseline) to 6 months after surgery.

  2. Change in Respiratory Effort-Related Arousal (RERA) Index

    Number of respiratory effort-related arousals per hour of sleep (events/h), derived from mandibular jaw movement analysis by the Sunrise system. This is a physiological index, not a scale score; higher values indicate worse sleep-disordered breathing.

    Measured: From 1 month before surgery (baseline) to 6 months after surgery.

  3. Change in Sleep Onset Latency

    Time from lights-off to sleep onset (minutes), measured by the Sunrise system. Not a scale score; higher values indicate worse sleep initiation.

    Measured: From 1 month before surgery (baseline) to 6 months after surgery.

  4. Change in Wake After Sleep Onset (WASO)

    Total time awake after sleep onset (minutes), measured by the Sunrise system. Not a scale score; higher values indicate worse sleep continuity.

    Measured: From 1 month before surgery (baseline) to 6 months after surgery.

  5. Change in Sleep Fragmentation Index

    Number of awakenings and sleep-stage shifts per hour of sleep (events/h), measured by the Sunrise system. Not a scale score; higher values indicate more fragmented sleep (worse outcome).

    Measured: From 1 month before surgery (baseline) to 6 months after surgery.

  6. Change in STOP-BANG Questionnaire Score

    STOP-BANG questionnaire (Snoring, Tiredness, Observed apnea, high blood Pressure, Body mass index, Age, Neck circumference, Gender). Total score ranges from 0 to 8; higher scores indicate a higher risk of obstructive sleep apnea (worse outcome).

    Measured: From 1 month before surgery (baseline) to 6 months after surgery.

  7. Percentage of Participants Classified as High Risk on the Berlin Questionnaire

    Berlin Questionnaire for sleep apnea risk, with three symptom categories; participants are classified as high risk if two or more categories are positive. Reported as the percentage of participants at high risk; a higher percentage indicates a worse outcome.

    Measured: From 1 month before surgery (baseline) to 6 months after surgery.

  8. Correlation Between Mandibular Advancement and Change in AHI

    Spearman's rank correlation coefficient between (1) achieved mandibular anteroposterior advancement in millimeters, measured at B point by superimposition of preoperative and 6-month postoperative facial CT scans in IPS CaseDesigner, and (2) change in apnea-hypopnea index (events/h) measured by the Sunrise system between baseline and 6 months.

    Measured: From 1 month before surgery (baseline) to 6 months after surgery.

  9. Correlation Between Maxillary Advancement and Change in AHI

    Spearman's rank correlation coefficient between (1) achieved maxillary anteroposterior advancement in millimeters, measured at B point by superimposition of preoperative and 6-month postoperative facial CT scans in IPS CaseDesigner, and (2) change in apnea-hypopnea index (events/h) measured by the Sunrise system between baseline and 6 months.

    Measured: From 1 month before surgery (baseline) to 6 months after surgery.

  10. Correlation Between Mandibular Advancement and Change in REMOV

    Spearman's rank correlation coefficient between (1) achieved mandibular anteroposterior advancement in millimeters, measured at B point by superimposition of preoperative and 6-month postoperative facial CT scans in IPS CaseDesigner, and (2) change in percentage of total sleep time with increased respiratory effort (REMOV, %) measured by the Sunrise system between baseline and 6 months.

    Measured: From 1 month before surgery (baseline) to 6 months after surgery.

  11. Correlation Between Maxillary Advancement and Change in REMOV

    Spearman's rank correlation coefficient between (1) achieved maxillary anteroposterior advancement in millimeters, measured at B point by superimposition of preoperative and 6-month postoperative facial CT scans in IPS CaseDesigner, and (2) change in percentage of total sleep time with increased respiratory effort (REMOV, %) measured by the Sunrise system between baseline and 6 months.

    Measured: From 1 month before surgery (baseline) to 6 months after surgery.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted2 Nov 2026
  2. Study start4 Nov 2026 (estimated)
  3. Primary completion15 Jun 2027 (estimated)
  4. Study completion15 Sep 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
25 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07910461
Sponsor's protocol ID
sunrise-ortho-namur/2026-353
Other IDs
B7072026000061
Acronym
SUNRISE-ORTHO
Status last verified
Oct 2026
First submitted
27 Oct 2026
Last updated
3 Nov 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: Individual participant data will not be shared outside the study team, in accordance with the informed consent and the EU General Data Protection Regulation. Aggregated results will be published.

Publications

  • Zaghi S, Holty JE, Certal V, Abdullatif J, Guilleminault C, Powell NB, Riley RW, Camacho M. Maxillomandibular Advancement for Treatment of Obstructive Sleep Apnea: A Meta-analysis. JAMA Otolaryngol Head Neck Surg. 2016 Jan;142(1):58-66. doi: 10.1001/jamaoto.2015.2678.

    PubMed 26606321

Questions about this trial

What is this clinical trial studying?

An observational study of Obstructive Sleep Apnea and Sleep Apnea, Obstructive, run by CHR Sambre et Meuse Site Meuse at 1 site in Belgium.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: opening soon, as of the sponsor's last update on 3 Nov 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Belgium. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Jerome Decaux, MD (0032474523674, jerome.decaux@chrsm.be), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in apnea-hypopnea index (AHI) measured by mandibular jaw movement monitoring (time frame: From 1 month before surgery (baseline) to 6 months after surgery). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07910461, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 Nov 2026.

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