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3D-Printed dental crowns challenge the gold standard in tooth repair

NCT ID NCT07708077

Disease control Sponsor: October 6 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 16, 2026 · Last updated Jul 22, 2026 · Updated 3 times

Summary

This trial tests whether 3D-printed resin composite endocrowns work as well as milled ones for restoring molars after root canal treatment. About 52 adults aged 20 to 40 with good oral hygiene will receive either a 3D-printed or milled crown. Researchers will compare how well the crowns fit and perform over 18 months using standard dental criteria.

What this could mean

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

Active substance
3D-printed resin composite endocrowns and milled resin composite endocrowns
What this could lead to
If 3D-printed crowns perform as well as milled ones, it could offer a faster, more customizable option for restoring teeth after root canals.
What could go wrong
This is a small, early-stage trial with only 52 participants, so results may not apply to everyone. 3D-printed crowns might not hold up as well 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

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 52 people

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

Expected to start

Nov 2026

An estimate. Start dates often move.

Expected to finish

Dec 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 40 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: \- Patient-Related Criteria 1. Age: Between 20 and 40 years. 2. Oral Hygiene: Good oral hygiene, evidenced by low plaque and gingival index scores. 3. Willingness to attend regular follow-up visits during the study period \- Tooth-Related Criteria 4. Endodontic Quality: High-quality root canal treatment with no clinical or radiographic signs of pathology. 5. Tooth Type: A permanent molar tooth requiring an endocrown after successful root canal treatment. 6. Located in functional occlusion and opposing natural teeth in stable occlusal contact with the restored tooth. 7. Teeth free from cracks, fractures, or internal resorption; supporting tissues without structural defects that may compromise restoration success Exclusion Criteria: \- Patient-Related Criteria 1. Parafunctional Habits: Severe bruxism, clenching, or other parafunctional habits. 2. Allergies: to any study materials (e.g., resin composites, bonding agents). 3. Patients with systemic diseases contraindicate elective dental treatment (e.g., uncontrolled diabetes) \- Tooth-Related Criteria 4. Insufficient Tooth Structure: Less than 2mm of circumferential sound denting height or deep, unrestorable. 5. Tooth opposes prosthetic restoration. 6. Teeth with a history of fixed prosthetic restorations (previous crowns, inlays/onlays, or bridge restorations) 7. Periodontal Issues: Active periodontal disease, excessive mobility (\> Grade 1, or a hopeless long-term prognosis.

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As listed by the trial registrant

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

Clinical performance of endodontically treated teeth restored with endocrowns Restoration fit of endodontically treated teeth with endocrowns Restoration of endodontic trested permanent molars

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

  • October city, October 6 university

    Giza, 12556, Egypt