New crown material tested for Kids' teeth: will it bite better?
NCT ID NCT07523776
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study will compare Bioflx crowns (a newer, tooth-colored material) with standard stainless steel crowns for children aged 6 to 9 who have had pulp treatment on their back baby teeth. The goal is to see how each crown affects bite force and the space between teeth, and how satisfied parents are with the look. Eighteen children will be randomly assigned to get one type of crown, and measurements will be taken right after placement, at one week, and at four weeks.
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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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About 18 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Apr 2026
An estimate. Start dates often move.
- Expected to finish
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Aug 2026
An estimate. End dates often move.
- 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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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Pulp-treated primary molars (pulpotomy) * Asymptomatic teeth after pulp therapy with no signs of infection, mobility, or radiographic pathology, such as internal resorption or periapical lesions * Age 6 years to 9 years * Male or female * Cooperative child with positive Frankl behavior rating * No missing teeth * Normal occlusion, including normal overjet and overbite * Free from systemic disease to allow continuity of follow-up Exclusion Criteria: * Medically compromised or uncooperative children * Tooth indicated for extraction because of root resorption, teeth near exfoliation, or deep subgingival caries that prevents proper coronal seal * Teeth with more than two-thirds root resorption * Previous pulp therapy * Parafunctional habits, including bruxism, thumb-sucking, or other habits that may affect occlusal force measurements * Inability to attend follow-up visits or parental refusal to participate
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Cairo University
Cairo, Giza/Egypt, 12613, Egypt
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