Light therapy may restore smiles after jaw Surgery—A trial tests two devices
NCT ID NCT07771933
First seen Aug 19, 2026 · Last updated Aug 20, 2026 · Updated 1 time
Summary
This trial tests whether two different light-based therapy devices can help restore facial nerve function in people who experience facial weakness or paralysis after temporomandibular joint (jaw) surgery. Participants receive 15 sessions of photobiomodulation—a non-invasive treatment using laser or LED light—starting the day after surgery. Over a 60-day follow-up, doctors measure facial movement and symmetry using standard grading scales to see if one device works better than the other.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Photobiomodulation (light therapy) using either the GRR Laser system or the SiroLaser Advance Plus system
- What this could lead to
- If effective, this could establish light therapy as a standard way to speed up facial nerve recovery after jaw surgery, potentially improving outcomes for many patients.
- What could go wrong
- This is a small, early-stage trial with only 24 participants, so results may not apply broadly. The two devices may also work equally well, or neither may show a clear benefit.
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.
- 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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24 people
The number who actually took part.
- Started
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May 2022
- Finished
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Jun 2026
- 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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Children (under 18), adults (18 to 64) and older adults (65 and over)
- 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 who underwent open temporomandibular joint surgery. * Presence of clinically confirmed postoperative facial nerve dysfunction. * Willingness to comply with the follow-up protocol and attend scheduled follow-up visits. * Provision of written informed consent. Exclusion Criteria: * Pre-existing facial nerve paralysis or facial nerve dysfunction before surgery. * History of central neurological disease. * Previous surgery involving the facial nerve. * History of head and neck malignancy and/or chemotherapy or radiotherapy that could potentially affect facial nerve function.
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Ankara University Faculty of Dentistry
Ankara, Ankara, Turkey (Türkiye)