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Dental showdown: which crown works best for Root-Canal teeth?

NCT ID NCT07508475

Disease control Sponsor: Cairo University 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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested two types of ceramic dental restorations for teeth that have had root canal treatment: overlays and endocrowns. Twenty-five patients received one of the two restorations, and researchers checked how well they fit, any color changes at the edges, and how satisfied patients were. The goal is to find which option works better for restoring strength and appearance.

What this could mean

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

Active substance
lithium-disilicate ceramic dental restoration
What this could lead to
If one restoration proves better, dentists may have clearer guidance on which option lasts longer and looks better for treated teeth.
What could go wrong
This is a small, completed study with only 25 participants, so results may not apply to everyone. Both restorations 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

25 people

The number who actually took part.

Started

Aug 2023

Finished

Mar 2024

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

18 to 60 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Patients with endodontically treated teeth indicated to ceramic Endocrowns. * Patients with endodontically treated teeth indicated to ceramic overlays. * Physically and psychologically able to tolerate conventional restorative procedures. * Have no active periodontal or periapical diseases. * Maintenance of good oral hygiene. * Willing to return for follow-up examinations and evaluation. Exclusion Criteria: * Patients in the growth stage with partially erupted teeth. * Patients with para-functional habits. * Patients with defective endodontic treatment. * Patients with poor oral hygiene and motivation. * Psychiatric problems or unrealistic expectations.

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Conditions

The condition(s) this trial relates to.

dental pulp necrosis Tooth, Nonvital

As listed by the trial registrant

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

Nonvital tooth

Contacts and locations

Locations

  • Faculty of Dentistry Cairo University

    Cairo, Cairo Governorate, 12567, Egypt