Jaw pain relief: does adding gel to surgery help?
NCT ID NCT07614932
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at two treatments for a jaw joint condition called disc displacement without reduction, which causes pain and trouble opening the mouth. Fifty-two adults who haven't gotten better with standard care will be randomly assigned to get either arthroscopic surgery alone or surgery plus an injection of hyaluronic acid (a lubricating gel). The goal is to see which approach better reduces pain and improves how wide the mouth can open.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 52 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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May 2026
An estimate. Start dates often move.
- Expected to finish
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Jan 2027
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.
- 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Adults above 18 years old. 2. Diagnosis of Disc Displacement Without Reduction (DDWOR) with limited mouth : eitherunilateral or bilateral based on the DC/TMD and confirmed with MRI 3. History of unsuccessful conservative treatment such as physical therapy, occlusal splints,or medications (e.g., NSAIDs, muscle relaxants) for at least 3 months. 4. Patients must sign the informed consent, understand the study procedures and potential risks, accept to volunteer in the study and be available to attend the follow-up visits. Exclusion Criteria: 1. Degenerative Temporomandibular Joint Disorders (e.g., osteoarthritis, rheumatoid arthritis). 2. History of prior TMJ surgery (e.g., joint replacement, previous arthroscopy). 3. Severe Systemic Conditions (e.g., cardiovascular disease, autoimmune disorders, uncontrolled diabetes). 4. Active joint infection, acute inflammation, or presence of any condition that may increase the risk of complications from arthroscopic surgery or injections (e.g., local infection, uncontrolled bleeding disorders). 5. Pregnancy or Breastfeeding. 6. Patients with severe Psychological Conditions (e.g., severe depression, psychosis, myofascial pain disorder) or dental related pain will be identified at the initial assessment and referred for appropriate psychological, behavioural, or dental management prior to inclusion in the study.
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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 places running it
1 site. The list below names each one and where it is.
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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.
Contacts and locations
Locations
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Faculty of Dentistry, Cairo University
Cairo, Egypt
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can a Blood-Based injection and botox ease jaw joint pain?
- Which surgery unlocks a locked jaw? a Head-to-Head test
- Could a Blood-Derived injection ease jaw pain without surgery?
- Jaw pain and mental health: study probes the hidden link
- Jaw misalignment linked to posture? 3D spine scans investigate