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Can tiny bite blocks speed up upper jaw expansion?

NCT ID NCT07739498

Disease control Sponsor: Mansoura 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 31, 2026 · Last updated Aug 18, 2026 · Updated 2 times

Summary

This trial tests whether adding small resin bite turbos to a standard HYRAX expander can speed up upper jaw widening in early adolescents with a narrow upper jaw and crossbite. Half the participants get the expander with bite turbos, and the other half gets the expander alone. Researchers will compare how quickly the jaw widens and how the bone and teeth respond, using digital models and 3D imaging.

What this could mean

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

Active substance
HYRAX expander with posterior disarticulatory resin bite turbos
What this could lead to
If adding bite turbos speeds up upper jaw widening, it could shorten orthodontic treatment time and improve outcomes for teens with narrow upper jaws.
What could go wrong
This is a small early-stage trial, so results may not apply to everyone. The bite turbos could cause discomfort or not significantly improve expansion rates.

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 22 people

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

Started

Feb 2026

Expected to finish

Jun 2027

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

10 to 14 years

Sex

Anyone

Healthy volunteers

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

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 aged 10-14 years. 2. Bilateral posterior cross bite. 3. Functional lateral cross bite. 4. Good general and oral health. 5. Normal to decreased vertical height )average FMA 29.7 °± 4.2 °).23 Exclusion Criteria: 1. Patients with cleft lip and palate. 2. Severe facial asymmetry. 3. Anterior open bite. 4. Systemic conditions affecting tooth movement (e.g., diabetes, bone disorders). 5. Previous orthodontic treatment.

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As listed by the trial registrant

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

Maxillary transverse deficiency (posterior crossbite) in early adolescent patients Maxillary transverse deficiency requiring rapid maxillary expansion in early adolescent patients

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  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

    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

  • Orthodontic Department - Faculty of Dentistry Mansoura University

    RECRUITING

    Al Mansurah, Egypt