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Which crown works best for Kids' front teeth? a Head-to-Head trial

NCT ID NCT07691905

Disease control Sponsor: Hue University of Medicine and Pharmacy 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 09, 2026 · Last updated Jul 10, 2026 · Updated 1 time

Summary

This study compares two types of prefabricated crowns—zirconia and Bioflx—for restoring decayed or discolored front baby teeth in children aged 3 to 5. Each child receives one crown type, and researchers track gum health, plaque buildup, wear on the opposite tooth, crown retention, and parent satisfaction over 12 months. The goal is to see which crown performs better in everyday use.

What this could mean

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

Active substance
Prefabricated zirconia crown or Bioflx crown
What this could lead to
If one crown type performs better, it could become the preferred option for restoring decayed or discolored front baby teeth in young children.
What could go wrong
This is a small, short-term trial (120 children, 12 months) comparing two existing products, so results may not apply to all children or longer timeframes. Both crowns are already in use, so no major breakthrough is expected.

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 120 people

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

Started

Jan 2026

Expected to finish

Apr 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

3 to 5 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 3 to 5 years. * Children requiring full-coverage restoration of one or more primary maxillary anterior teeth. * Presence of an opposing tooth. * Target tooth with at least two carious surfaces, caries involving the incisal edge, or discoloration associated with hypomineralization. * Written informed consent from a parent or legal guardian and willingness to comply with treatment and follow-up visits. Exclusion Criteria: * Allergy to Fuji IX Extra glass ionomer cement. * Acute systemic disease. * Crowded teeth affecting crown placement. * Pulp exposure before treatment. * Inadequate remaining clinical crown structure after tooth preparation. * Absence of an opposing tooth. * Bruxism or deep bite. * Tooth close to exfoliation or root resorption exceeding one-half of the root length. * Caries limited to a single surface without proximal involvement. * History of trauma affecting the target tooth.

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Conditions

The condition(s) this trial relates to.

dental caries Dental Enamel Hypomineralization

As listed by the trial registrant

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

Dental caries Tooth hypomineralization

Contacts and locations

Locations

  • Faculty of Odonto-Stomatology, University of Medicine and Pharmacy, Hue University

    Huế, 530000, Vietnam

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