Clinical trial Recruiting at 1 site Observational Ages 18 and up

Long-term follow-up after TMJ surgery to see if 6-month results predict outcomes about 10 years later

Official title: Long-term Follow up of TMJ Surgery and Evaluation of the 6-month Control as a Prognostic Marker.

Run by Karolinska Institutet · NCT06782165 · Data updated 2026-11-12

This will see if people who had TMJ surgery for disc displacement still have the same results at about 10 years as they did at 6 months, and whether their joint X-rays show more or less degeneration.

More Temporomandibular Disorders (TMD) trials

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment91 (estimated)
SponsorKarolinska Institutet
Academic / other
Drugs / interventionsradiation
Locations1 site (Huddinge)
StatusRecruiting
StartedApril 1, 2025
Main results expectedFebruary 2027
Study endsDecember 2027
Registry record updatedAugust 7, 2026
Trial IDNCT06782165 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are people who previously had TMJ arthroscopy or discectomy for disc displacement in the listed ethically approved cohorts and can attend an in-person follow-up and cone-beam CT at Karolinska.

Probably not a fit

Patients who never had TMJ surgery, have different TMJ diagnoses, cannot provide consent, or cannot travel to the study site are unlikely to benefit from this follow-up.

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

What this trial studies

This observational follow-up invites patients who previously underwent TMJ arthroscopy or discectomy for disc displacement to return for a clinical exam and cone-beam CT about ten years after surgery. Investigators will compare each patient's earlier 6-month surgical outcome data with the long-term clinical findings to determine stability of symptom relief and jaw function. Radiological imaging will be used to quantify changes in joint degeneration over time. The study uses existing ethically approved cohorts and does not introduce new surgical treatments.

Why it matters

Potential benefit: If successful, the findings could help doctors and patients know whether early (6-month) surgical results are likely to last and guide long-term care decisions.

How similar studies have gone: Short- to mid-term reports (3–5 years) and a few retrospective surveys suggest generally good outcomes after TMJ surgery, but prospective 10-year clinical follow-up data are limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients participating in the studies with ethical approval numbers EPN 2014/764-31/2 and 2014/622-31/1.
* Initial diagnosis DDwR or DDwoR.

Exclusion Criteria:

* Patient unable to verify informed consent.

Where it's running

  • Karolinska Institutet
    Huddinge, Sweden
    Recruiting

Study contacts

  • Principal investigator: Mattias Ulmner, DDS, PhD — Karolinska Institutet, Department of Dental Medicine
  • Study coordinator: Mattias Ulmner, DDS, PhD
  • Email: mattias.ulmner@ki.se
  • Phone: +46 707648141

Similar studies

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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.