Den här översättningen är inte klar ännu. Den här sidan är just nu på engelska.

Gå till den engelska sidan

Cure My Disease

Don't miss your cure!

 Log in / Sign up

Dental overlay showdown: which cavity design lasts longer?

NCT ID NCT07614451

Knowledge-focused 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 This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at two different ways to prepare a tooth for a dental overlay after a root canal. Fifty adults with treated molars will get either a traditional retentive design or a newer, less invasive non-retentive design. Over two years, dentists will check how well each restoration fits, wears, and holds up. The goal is to see which approach works better for everyday dental care.

What this could mean

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

Active substance
hybrid ceramic overlay
What this could lead to
If successful, this could help dentists choose the best cavity design for durable, long-lasting overlays on root-canal-treated molars.
What could go wrong
This is a small, early-stage trial with only 50 participants, so results may not apply to everyone. The study only lasts two years, so long-term performance remains unknown.

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

About 50 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Jun 2026

An estimate. Start dates often move.

Expected to finish

Aug 2028

An estimate. End dates often move.

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

20 to 60 years

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: Patient Related Criteria: * Adult patients (age: 20-60 years) of both genders. * Healthy patients (not suffering of any systematic or chronic diseases). * Able to tolerate the necessary restorative procedures. * Willing to sign the informed ethical consent. * Accepts the follow-up period. Tooth Related Criteria: * Proper endodontically treated teeth. * First and second permanent molars. * Absence of any peri-apical lesions. * Absence of any periodontal disease involvement. * Large access cavities with one or two missing walls. * Patients with proper oral hygiene. * Presence of opposing tooth. Exclusion Criteria: * Patient related: * Patients younger than 20 or older than 60 years old. * Pregnant females. * Patients with any systemic or chronic diseases. * Patients not accepting the follow-up period. * Patients not willing to sign the informed ethical consent. * Patients with known allergies to latex and/or resinous material. Tooth related * Endodontically treated anterior, premolar and third molar teeth. * Hopelessly carious/destructed teeth necessitating extraction. * Mobile teeth, indicating periodontal disease or trauma. * External or internal resorption. * Poor endodontic treatment. * Periapical lesion present. * Cervical carious lesions involved.

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for Endodontically treated molar are added.

Vår säkerhetsrekommendation!

Genom att skicka in godkänner du våra Användarvillkor

As listed by the trial registrant

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

Endodontically treated molar

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  2. 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.

More trials for these conditions

Other studies related to the condition(s) this trial covers.