New crown study offers free fixes for failed dental work
NCT ID NCT07264491
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how well hybrid ceramic crowns work in the front teeth (the aesthetic zone). About 54 adults who need a full crown will get one placed by a dentist and be checked regularly for up to several years. The goal is to see how well the crown fits and matches the color of natural teeth, and any repairs or remakes needed are free. This research will help improve dental materials for future patients.
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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About 54 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Sep 2025
- Expected to finish
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May 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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21 years and older
- 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: 1. Adult patients requiring full coverage crowns in aesthetic zone 2. Age ≥ 21 years 3. Vital or endodontically treated teeth 4. Willing and able to provide written informed consent 5. Ability to attend all follow-up appointments 6. Adequate oral hygiene as determined by the investigator Exclusion Criteria: 1. Patients with active periodontal disease (probing depth \> 4mm, bleeding on probing) 2. Patients with parafunctional habits (e.g., bruxism confirmed by clinical examination) 3. Poor oral hygiene (plaque index \> 30%) 4. Systemic diseases affecting treatment outcomes (e.g., uncontrolled diabetes, immunosuppression) 5. Known allergies to study materials (ceramic materials, or resin cement components) 6. Inability to comply with study requirements 7. Current participation in other dental clinical trials
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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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Faculty Of Dentistry, Cairo University
RECRUITINGCairo, Manial, Egypt
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