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Crown showdown: which cap is best for Kids' teeth?

NCT ID NCT07426445

Symptom relief Sponsor: Izmir Katip Celebi 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested three types of dental crowns—nanohybrid composite, zirconia, and stainless steel—on the back baby teeth of 46 children aged 4 to 9. The goal was to see which crown lasts longest, looks best, and keeps gums healthy over one year. Results will help dentists choose the best option for fixing cavities in kids.

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

46 people

The number who actually took part.

Started

Jan 2025

Finished

Jan 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

4 to 9 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 4 to 9 years with no systemic diseases (ASA I). * Cooperative behavior assessed as Frankl Score 3 (Positive) or 4 (Definitely Positive). * Written informed consent obtained from the parent/legal guardian and assent from the child. * Willingness to attend all scheduled follow-up visits. * Presence of bilateral mandibular second primary molars (teeth 75 and 85) with multisurface carious lesions. * Presence of an opposing antagonist tooth in occlusion. * Carious lesions classified as ICDAS II Score 4, 5, or 6. * Radiographic caries depth extending to D1-RA3, D2-RB4, or D3-RC5. * Root resorption not exceeding one-third of the root length. * No radiographic evidence of periapical or furcation radiolucency. * Normal periodontal ligament space and intact lamina dura. * No evidence of internal or external root resorption. Exclusion Criteria: * Children classified as ASA II or higher or having systemic diseases. * Frankl Behavior Rating Scale Score 1 or 2. * Unwillingness to attend follow-up visits or provide informed consent. * Presence of temporomandibular joint disorders. * Presence of parafunctional habits such as bruxism. * Absence of one or both mandibular second primary molars. * Absence of an opposing antagonist tooth. * Carious lesions classified as ICDAS II Score 1, 2, or 3. * Radiographic findings limited to enamel caries or no evidence of caries (E0-R0, E1-RA1, E2-RA2).

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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.

Dental caries in primary teeth Full-coverage restorations in pediatric dentistry

Contacts and locations

Locations

  • Department of Pediatric Dentistry

    Izmir, İzmir, 35550, Turkey (Türkiye)

More trials for these conditions

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