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No drill, no needle? new study tests crowns that slip over cavities in children

NCT ID NCT07648654

Disease control Sponsor: MTI 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study compares two methods for treating cavities in children's back molars: the Hall Technique, which places a crown over the tooth without drilling or numbing, and the conventional method, which requires drilling and anesthesia. Researchers will track 200 children aged 5-8 to see which approach leads to better crown survival, less anxiety, shorter treatment time, and lower cost over 3 months. The goal is to find a gentler, effective option for kids.

What this could mean

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

Active substance
Hall Technique (a procedure where a preformed metal crown is cemented over a decayed tooth without drilling or anesthesia) and conventional stainless-steel crown (a procedure involving drilling and anesthesia)
What this could lead to
If the Hall Technique works well, it could offer a less scary, faster, and cheaper way to treat cavities in children's back teeth, reducing anxiety and the need for drilling.
What could go wrong
This is a small, short-term study (200 children, 3 months follow-up). The Hall Technique may not work as well as the standard method in the long run, and there is a risk of the crown failing or decay worsening underneath.

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 200 people

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

Started

May 2026

Expected to finish

Aug 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

5 to 8 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: * Only patients aged between 5-8 years old will be included in the study. The following criteria is used to determine eligibility to be part of the study: Only participants with one or two asymptomatic, vital primary molars following completion of treatment, will be able to participate in the clinical study .The posterior teeth may have multi-surface caries within the proximal and occlusal surfaces of the teeth, either one or both surfaces have been involved with caries and results in complete coronal coverage of the tooth. The posterior teeth included must show evidence of caries on x-rays (ICDAS 0-3), but with no evidence of pulp involvement/radicular pathology. All included teeth must be able to be restored and possess sufficient structure for retention of a preformed metal crown (PMC). Participants will be eligible if they demonstrate cooperation (i.e. Frankl behaviour rating 3-4) during examination/anesthesia/surgery. Exclusion Criteria: * o Any clinical symptoms or signs associated with pulpal pathology which could include sinus tract, spontaneous pain, tenderness to percussion or pathological mobility. * Radiographic evidence of pulp involvement, furcation radiolucency or pathological root resorption exceeding one-third (1/3) of the root length were also considered. * There are certain medical or systemic conditions/contra-indicators for routine dental treatment. * Target teeth which have been previously restored have additional requirements. * A follow-up appointment cannot occur because the parent/guardian will not be able to bring the child in for any follow-up appointments is another issue.

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Conditions

The condition(s) this trial relates to.

dental caries

As listed by the trial registrant

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

Hall technique

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

  • Pedodontics clinic - Faculty of Dentistry _ MTI University

    RECRUITING

    Cairo, 11585, Egypt

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