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Velopharyngeal Insufficiency After Maxillomandibular Advancement Osteotomy in Obstructive Sleep Apnea Patients

Key facts

Who runs it
Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
Where
Netherlands1 site in 1 countryChoose a country to see its sites
Trial code
Status
Not yet recruiting
People taking part
28 people, planned
Started
1 May 2026
Expected to end
1 Dec 2027
Type of study
Observational
Record updated
20 March 2026

Who can take part

Age
18 years and older
Sex
Women and men
Healthy volunteers
Can take part

The registry criteria, word for word

Show all 10 criteriaShow less

Who can take part

  • Age > 18 years
  • Mild to severe OSA
  • Indication for MMA for OSA treatment

Who cannot take part

  • Previous history of orthognathic surgery
  • Previous history of orthognathic surgery
  • Previous history of oropharyngeal surgery (UPPP or multi-level surgery)
  • Neuromusculair diseases which causes VPI, dysphagia or dysarthria
  • patients who underwent other adjunctive procedures at the time of MMA (e.g., multipiece le Fort osteotomy, TMJ reconstruction
  • Cleft palate and syndromic patients
  • Incapacity

This trial has no sites in United States.

It has sites in one country. Choose a country to see its sites.

About the trial

What the trial wants to find out

The aim of this study is to gain insight into the development of velopharyngeal insufficiency (VPI) in patients who have undergone maxillomandibular advancement osteotomy (MMA) as a treatment for obstructive sleep apnea syndrome (OSAS). A speech therapist evaluates nasality, speech, and swallowing before and after the surgery.

The group in the trial

  • OSA patients after an MMA

    Patients with obstructive sleep apnea (OSA) who underwent a maxillomandibular advancement (MMA)

Questions to ask the study team

  1. How often do I need to come in, and for how long each time?
  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?

Contact the study team: see the registry record → Contacts and Locations

Print a page for my doctor

Data and sources

Registry record
Listed on ClinicalTrials.gov.
Record updated
20 March 2026