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Which jaw surgery method spares the joint? a Head-to-Head test

NCT ID NCT07758725

Knowledge-focused Sponsor: Bezmialem Vakif University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Aug 11, 2026 · Last updated Aug 12, 2026 · Updated 1 time

Summary

This study compares two ways of positioning the jaw during corrective surgery for a misaligned bite (bimaxillary orthognathic surgery). The goal is to see which technique leads to healthier natural reshaping of the jaw joint (condylar remodeling) after surgery. Adults aged 18 to 65 with a specific jaw deformity will be randomly assigned to one of the two techniques. CT scans taken before, right after, and 6 months after surgery will measure changes in the joint's position and shape, along with clinical checks.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Two surgical techniques for positioning the jaw during bimaxillary orthognathic surgery: one rotates the jaw segment, the other does not.
What this could lead to
If one technique proves better, it could guide surgeons to choose a method that reduces unwanted joint changes and improves long-term jaw function and comfort after surgery.
What could go wrong
This is a small, early-stage study, so results may not apply to all patients. The outcome depends on individual healing, and the study only follows patients for 6 months, which may not capture long-term effects.

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

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

About 40 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jan 2026

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

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

18 to 65 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show 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: 1. Patients with skeletal Class III dentofacial deformity scheduled to undergo bimaxillary orthognathic surgery. 2. Age between 18 and 65 years. 3. Patients who have completed preoperative orthodontic treatment. 4. Patients in whom the mandibular distal segment demonstrates a maximum counterclockwise rotation of 4° after bilateral sagittal split osteotomy (BSSO) when positioned in the final planned occlusion. Exclusion Criteria: 1. History of temporomandibular joint surgery, orthognathic surgery, or tumor resection. 2. Presence of facial asymmetry. 3. Patients with cleft lip and/or palate, craniofacial syndromes, or a history of maxillofacial trauma. 4. Patients in whom the mandibular distal segment requires more than 4° of counterclockwise rotation after BSSO to achieve the final planned position, as the amount of inferior border (basal) resection required would exceed the clinically acceptable limit.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Orthognathic surgical procedures

How to take part

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  1. The places running it

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  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

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Contacts and locations

Locations

  • Bezmialem Vakif University

    RECRUITING

    Istanbul, Fatih, 34093, Turkey (Türkiye)

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