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CompletedNCT03246477MIMOSAUpdated Feb 15, 2019

Long-term Impact of Maxillomandibular Advancement Osteotomy on Sleep Apnea Patients

An observational study in Obstructive Sleep Apnea, sponsored by AZ Sint-Jan AV. Completed. Per ClinicalTrials.gov, last updated 2019-02-15.

Sponsored by AZ Sint-Jan AV · Observational

Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
12
Sex
All
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Study summary

Background Maxillomandibular advancement surgery (MMA) has demonstrated high success rates, improving both the apnea-hypopnea index and associated patient' quality of life (QOL), in patients diagnosed with obstructive sleep apnea syndrome (OSAS). However, clinical relapse has been described in the target population, especially when associated with significant weight gain. Literature reporting the long-term impact of MMA for OSAS is lacking. The surgeons of the Division of Maxillofacial Surgery already started to perform this type of surgery in 1995.

Objectives The investigators aim to evaluate the long-term (minimum 15 years post-surgery) biologic and QOL impact of MMA in patients with OSAS. The biologic impact refers to the stability of hard and soft tissues and polysomnographic results.

Study design Retrospective study Both pre- en postoperative clinical imaging, polysomnography and quality of life questionnaires will be retrieved from all patients that were surgically treated with an MMA by one surgeon (CDC) between 01/11/1995 and 01/12/1999.

Conclusion Short-term data have shown high success rates for MMA in OSAS patients. However, long-term data are lacking. This retrospective study might provide us with more information about the incidence of clinical relapse fifteen to twenty years after surgery.

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Conditions studied

  • Obstructive Sleep Apnea

Keywords

  • maxillomandibular advancement osteotomy
  • long-term results
  • quality of life
  • polysomnographic measurements
  • skeletal stability
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In context

Sleep Apnea, Obstructive

2,263 studies on the registry are indexed under Sleep Apnea, Obstructive; 465 are open to participants now.

This study's enrollment of 12 is below the median of 105 across 666 observational studies indexed under Sleep Apnea, Obstructive.

Browse Sleep Apnea, Obstructive studies →

Lead sponsor

AZ Sint-Jan AV is the lead sponsor of 60 studies on the registry; 14 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

All patients (n=10/12) with a clinically confirmed diagnosis of OSAS, that were treated with an MMA between 01/11/1995 and 01/12/1999 by one surgeon (CDC)

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • clinically confirmed diagnosis of OSAS
  • treated with an MMA between 01/11/1995 and 01/12/1999 by one surgeon (CDC)

Exclusion criteria

Exclusion Criteria:

  • not following abovementioned criteria
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Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
12 participants (actual)
Patient registry
No
06

What researchers measure

Primary outcomes

  1. apnea-hypopnea index, as determined through polysomnography

    Time frame: minimum 15 years postoperative

  2. oxygen saturation values, as determined through polysomnography

    Time frame: minimum 15 years postoperative

Secondary outcomes

  1. evolution of patient quality of life, through Epworth Sleepiness Scale

    Time frame: preoperative

  2. Stability of hard and soft head and neck tissue, according to manual anthropometry

    Time frame: min 15 years postoperative

  3. Evolution of apnea-hypopnea index, as determined through polysomnography

    Time frame: preoperative

  4. Evolution of apnea-hypopnea index, as determined through polysomnography

    Time frame: immediately postoperative

  5. oxygen saturation values, as determined through polysomnography

    Time frame: preoperative

  6. oxygen saturation values, as determined through polysomnography

    Time frame: immediately postoperative

  7. evolution of patient quality of life, through Epworth Sleepiness Scale

    Time frame: immediately postoperative

  8. evolution of patient quality of life, through Epworth Sleepiness Scale

    Time frame: minimum 15 years postoperative

  9. evolution of patient quality of life, through OSAS questionnaire

    Time frame: preoperative

  10. evolution of patient quality of life, through OSAS questionnaire

    Time frame: immediately postoperative

  11. evolution of patient quality of life, through OSAS questionnaire

    Time frame: minimum 15 years postoperative

  12. evaluation of hard and soft head and neck tissue, according to cone-beam CT imaging

    Time frame: minimum 15 years postoperative

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Study locations

No study locations are listed for this record.

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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 15, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03246477
Lead sponsor
AZ Sint-Jan AV
Responsible party
Nathalie Neyt (maxillofacial surgeon, principal investigator, AZ Sint-Jan AV) — Principal investigator
First posted
Aug 11, 2017
Start date
Sep 2016
Primary completion
Dec 31, 2017
Completion
Dec 31, 2017
Last update
Feb 15, 2019

Study contacts

Nathalie Neyt
principal investigator · AZ Sint-Lucas Brugge

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Feb 2019. You cannot join it, but the record below documents what was studied.

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