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Which crown material is best for your molars? new study aims to find out

NCT ID NCT04272112

Knowledge-focused Sponsor: Malmö 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study compares three types of all-ceramic crowns for back teeth: glass-ceramic, high-translucent zirconia, and zirconia with a thin porcelain layer. Researchers want to see which material looks best and lasts longest. 90 adults who need a crown on a premolar or molar are taking part. The crowns will be checked for fit, surface quality, and patient satisfaction.

What this could mean

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

Active substance
dental crown materials (lithium-disilicate glass ceramic, high translucent zirconia, and zirconia with a mini-veneer)
What this could lead to
If successful, this study could help dentists choose the best crown material for back teeth, balancing durability and appearance.
What could go wrong
This is a small, early-stage study focused on comparing materials, not testing a new treatment. Results may not apply to all patients or tooth types.

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

90 people

The number who actually took part.

Started

Feb 2017

Expected to finish

Jul 2026

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 years and older

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: * need of one or more dental crowns in the posterior dentition, premolars and molars Exclusion criteria: * high caries activity/risk for caries and/or advanced periodontal disease

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As listed by the trial registrant

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

Dental prosthesis failure

Contacts and locations

Locations

  • Malmö University

    Malmö, Sweden

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