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Which crown fits better for Kids' teeth? a Head-to-Head test

NCT ID NCT07738471

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This trial compares two types of zirconia crowns—custom-made versus prefabricated—for restoring severely decayed baby molars after a pulpotomy (a procedure to save the tooth). Children aged 5-8 with deep cavities in their primary molars will receive one of the two crowns, and researchers will track how well each crown holds up over time, looking at fit, retention, shape, and fractures, as well as gum health. The goal is to see if custom-made crowns offer any advantage over the standard prefabricated ones, which could help dentists choose the best option for restoring young children's teeth.

What this could mean

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

Active substance
Custom-made zirconia crowns or prefabricated zirconia crowns placed on pulpotomized primary molars
What this could lead to
If custom-made crowns perform better or equal to prefabricated ones, dentists may have a more durable and esthetic option for restoring decayed baby teeth, potentially reducing the need for re-treatment.
What could go wrong
This is a small, early-stage trial (64 children) comparing two dental devices, so results may not apply broadly. Crowns can fail due to poor fit, fracture, or gum irritation, and custom-made crowns may not prove superior.

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 64 people

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

Expected to start

Nov 2026

An estimate. Start dates often move.

Expected to finish

Nov 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

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: * Children aged 5-8 years. * Primary molars with deep carious lesions extending to the middle third of the dentin as confirmed radiographically. * Absence of root caries. * Absence of periapical or inter-radicular radiolucency. * Absence of internal or external root resorption. * Teeth in the opposite arch are present and in normal occlusion. * Willingness to participate and adhere to the follow-up appointments Exclusion Criteria: * Children with systemic health issues. * Children with periodontal diseases. * Children exhibiting parafunctional habits. * Uncooperative children (Frankl scale (score 1 and 2).

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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.

Primary molar tooth Pulpotomies primary teeth

How to take part

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

  1. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    Open the record ↗

  2. 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.

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