Dental crown showdown: which material wins for comfort and looks?
NCT ID NCT07521501
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times
Summary
This study compares two modern dental crown materials — a glass-ceramic and a zirconia type — to see which one fits better, lasts longer, and makes patients happier. Twenty adults needing a crown on a back tooth will be randomly assigned one of the two materials. Researchers will check the crown's fit, color, gum health, and any breakage over one year, and ask patients how satisfied they are.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- dental crowns (zirconia-reinforced glass-ceramic or ultra-translucent monolithic zirconia)
- What this could lead to
- If successful, this could help dentists choose the best crown material for durability and appearance, improving patient comfort and satisfaction.
- What could go wrong
- This is a small, early-stage trial with only 20 participants, so results may not apply to everyone. Crowns can still chip or fail over time.
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 20 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jun 2026
An estimate. Start dates often move.
- Expected to finish
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Jul 2027
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 to 50 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.
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. The age range of the patients from 21- 50 years old; able to read and sign the informed consent document; illiterate patients will be avoided. 2. Patients who can physically and psychologically tolerate conventional restorative procedures. 3. Patients with endodontically treated teeth indicated for ceramic crowns in the esthetic Zone (all axial walls existing). 4. Patients with no active periodontal or pulpal diseases. 5. Patients with teeth problems indicated for full coverage restoration in the esthetic zone (e.g. moderate to severe discoloration, coronal chipping where partial coverage would lack retention, malposed or malformed teeth). 6. Patients willing to return for follow-up examinations and evaluation. 7. Patients that care for good oral hygiene Maintenance. Exclusion Criteria: 1 Patients with poor oral hygiene and motivation. 2. high caries rate. 3. Patients with psychiatric problems or unrealistic expectations (patient that has phobia from dental treatments or needle bunch). 4. Patients suffering from parafunctional habits or temporomandibular disorders. 7\. Patients with teeth have extensive tooth structure loss, even if one wall is missing.
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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 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.