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Which Enamel-Shaving method works best for clear aligners? new trial aims to find out

NCT ID NCT07377825

Knowledge-focused Sponsor: Riyadh Elm University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study will test three common techniques for removing a tiny amount of enamel between teeth to make room for clear aligners. Seventy-five adults will be randomly assigned to manual strips, motor-driven strips, or abrasive discs. The main goal is to see which method most closely matches the planned amount of enamel removal, and how each affects gum health over six weeks.

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 orthodontists choose the most accurate and gum-friendly method for creating space between teeth during clear aligner treatment.
What could go wrong
This is a small, early-stage trial focused on measurement accuracy, not a treatment outcome. Results may not apply to all patients or aligner systems.

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 75 people

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

Expected to start

Mar 2026

An estimate. Start dates often move.

Expected to finish

Nov 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 years and older

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: * Age 18 years or older with full permanent dentition. * Undergoing clear aligner therapy (Invisalign) with a ClinCheck treatment plan that includes interproximal enamel reduction (IPR). * Periodontally healthy at baseline (per clinic screening). Exclusion Criteria: * Orthodontic treatment plan including extractions. * Proximal restorations or caries on any tooth surface targeted for IPR. * Current smoking. * Diabetes mellitus or other systemic diseases known to affect periodontal status.

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Conditions

The condition(s) this trial relates to.

Crowding Malocclusion periodontal disorder

As listed by the trial registrant

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

Dental crowding,interproximal enamel reduction Malocclusion, angle's class Periodontal diseases

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

  • Riyadh Elm University

    Riyadh, Riyadh Region, 12734, Saudi Arabia

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Other studies related to the condition(s) this trial covers.