Tooth crown showdown: zirconia vs. metal for kids
NCT ID NCT05910905
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tested two types of dental crowns for children's back teeth: white zirconia crowns and traditional silver-colored metal crowns. Researchers treated 35 healthy kids aged 6-9 with cavities on multiple tooth surfaces. They checked how well each crown held up and asked parents which they liked better. The goal was to see if the newer zirconia crowns work as well as the standard metal ones.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- prefabricated pediatric zirconia crown and prefabricated stainless steel crown
- What this could lead to
- If successful, this could show that zirconia crowns are a better-looking and equally effective option for restoring decayed baby molars in children.
- What could go wrong
- This is a small, completed study with only 35 children, so results may not apply to all kids. Crowns can still fail due to fractures or new decay.
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
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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
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35 people
The number who actually took part.
- Started
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Jan 2025
- Finished
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Dec 2025
- Lead sponsor
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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
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6 to 9 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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: * Healthy children aged 6-9 years with caries on primary molars * Children without systemic disease or developmental dental anomalies that may affect caries susceptibility. * Children whose cooperation is 'positive' or 'absolutely positive' according to the Frankl behavioral scale (Frankl et al., 1962). * Those with deep dentin caries that do not extend to the pulp in the teeth to be treated * The molars will be treated with a crown indication. * Presence of symmetry of the primary molar to be treated in the opposite arch. * The molar to be treated is in occlusion with the antagonist. * Presence of caries on at least two surfaces of the molars to be treated. * Absence of spontaneous pain, abscess, mobility, interradicular lesion in the tooth to be treated * Patients whose parents and themselves agree to participate in the treatment Exclusion Criteria: * Children whose treatment cannot be continued on the dental chair due to cooperation * Molars that will soon be exfoliated, 1/2 of the root has been resorbed * The presence of bruxism * The presence of erosion or attrition-related wear on the opposing molar * The patient does not come to the control appointment or does not want to continue to the research * Have allergy to local anesthetic, nickel or chromium * Complications during treatment.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Marmara University
Istanbul, 34854, Turkey (Türkiye)
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Other studies related to the condition(s) this trial covers.