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3D printing takes on tooth repair: can it beat milled restorations?

NCT ID NCT07378982

Symptom relief 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether 3D-printed ceramic-filled resin overlays work as well as milled composite overlays for fixing badly damaged back teeth that have had root canal treatment. About 32 adults will receive one of the two types of overlays and be followed for 18 months to check for fractures or other issues. The goal is to see if the newer 3D-printing method can offer a more affordable and precise option without sacrificing durability.

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 32 people

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

Expected to start

Feb 2026

An estimate. Start dates often move.

Expected to finish

Oct 2027

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

18 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: For Participants: * Age: 18-60 years. * Males or females. * Participants with endodontically treated molar teeth. Lower molars indicated for onlay (one or two missing cusps) * Patients with at least 20 teeth under occlusion. * Good oral hygiene. * Co-operative patients approving to participate in the trial. * Have sufficient cognitive ability to understand consent procedures. For Teeth: Badly destructed endodontically treated molars teeth indicated for cuspal total cuspal coverage (Overlay restoration) * No signs or symptoms after endodontic treatment. * No signs of clinical mobility. * Teeth with healthy periodontium. Exclusion Criteria: For Participants: * Participants with parafunctional habits or bruxism. * Participants with systemic diseases or disabilities that may affect participation. * Heavy smoking. * Pregnancy. * Lack of compliance. * Severe or active periodontal disease. * Cognitive impairment for teeth: * Periapical pathosis indicating failure in endodontic treatment. * Vital teeth. * Signs of pathological wear. * Severe periodontal affection or tooth indicated for extraction. * Signs of Vertical root fracture.

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As listed by the trial registrant

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

Dental restoration, permanent Endodontically treated molar

How to take part

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

  1. The places running it

    1 site. The list below names each one and where it is.

  2. 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 ↗

  3. 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

  • Outpatient Clinic, Conservative Dentistry Department, Faculty of Dentistry, Cairo University

    Cairo, Cairo Governorate, 11553, Egypt

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