Could bacteria in the jaw explain severe TMJ pain?
NCT ID NCT07350239
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study will look at tissue and bacteria samples from 20 people having surgery for severe temporomandibular joint (TMJ) problems like ankylosis or osteoarthritis. Researchers want to find out what causes these severe conditions and whether bacteria in the joint affect recovery. Participants will complete pain and function questionnaires and be followed for up to two years after surgery.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this study could help doctors better understand why some people develop severe TMJ problems and how to improve surgical outcomes.
- What could go wrong
- This is a small, early observational study with only 20 participants. It is not testing a new treatment, so it may not lead to direct changes in care.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 20 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Mar 2026
An estimate. Start dates often move.
- Expected to finish
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Feb 2029
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Consecutive patients (n=20) offered open TMJ surgery such as arthroplasty surgery with or without autogen or allogen reconstruction due to TMJ ankyloses or severe osteoarthritis. Patients treated at Karolinska University Hospital, Örebro University Hospital or Lund University Hospital. Exclusion criteria: suspicion of malignancy, inability to give consent.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patients subjected to open TMJ surgery such as arthroplastic surgery with or without autogen or allogen reconstruction * Preserved biobank material (resected bone and soft tissue). Exclusion Criteria: * Absence of biobank material. * Inability to give informed consent.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
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