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Which bracket placement method gives the best smile? trial compares three techniques

NCT ID NCT07708363

Disease control Sponsor: Future University in Egypt Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 16, 2026 · Last updated Jul 17, 2026 · Updated 1 time

Summary

This trial compares three ways of placing braces brackets — Smile Arc Protection, Smile Arc and Marginal Ridge Approach, and the standard MBT chart — in young people aged 14 to 25 with mild-to-moderate crowding and Class I malocclusion. The goal is to see which technique leads to the best tooth alignment, bite, and smile esthetics after treatment. Participants are randomly assigned to one of the three methods, and results are measured using dental casts, X-rays, and smile photos.

What this could mean

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

Active substance
orthodontic bracket positioning techniques (Smile Arc Protection, Smile Arc and Marginal Ridge Approach, and McLaughlin-Bennett-Trevisi chart)
What this could lead to
If one technique proves superior, it could lead to more predictable and esthetic orthodontic results for patients with crowding.
What could go wrong
This is a small trial with 39 participants, so results may not apply to all patients. The differences between techniques might be small and not clinically meaningful.

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

39 people

The number who actually took part.

Started

Jul 2024

Finished

Jul 2026

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

14 to 25 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. Males and females aged 14-25 years with a full permanent dentition. 2. Mild to moderate crowding requiring non-extraction orthodontic treatment (2-6 mm per Graber's classification). 3. Angle Class I malocclusion. 4. Normal skeletal vertical dimension (SN-MP angle 32° ± 5°). Exclusion Criteria: * 1\. Medication that may cause gingival inflammation (e.g., cyclosporine, phenytoin). 2\. Impacted, extracted, or missing permanent teeth (except third molars). 3. Periodontal disease or parafunctional habits (bruxism, tongue thrusting, mouth breathing). 4\. History of previous orthodontic treatment. 5. Craniofacial anomalies, facial asymmetry, or skeletal discrepancy.

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Conditions

The condition(s) this trial relates to.

Crowding Malocclusion, Angle Class I

As listed by the trial registrant

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

Dental crowding Malocclusion, angle class I

Contacts and locations

Locations

  • Department of Orthodontics, Faculty of Oral and Dental Medicine, Future University in Egypt, Cairo, Egypt

    New Cairo, Cairo Governorate, 11835, Egypt

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