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Nano-tech could keep your dental bridge from falling out

NCT ID NCT04693949

Knowledge-focused Sponsor: University of Ljubljana, Faculty of Medicine Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tests a new way to treat the surface of zirconia dental bridges before bonding them to teeth. Researchers compare a nano-structured alumina coating to standard sandblasting in 80 people missing a front tooth. The goal is to see which method helps the bridge stay in place longer without breaking or falling off.

What this could mean

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

Active substance
nanostructured alumina coating
What this could lead to
If successful, this could lead to stronger, longer-lasting dental bridges for people missing front teeth.
What could go wrong
This is a small, early-stage study with only 80 participants. The new coating may not outperform the standard method, and results may not apply to all dental situations.

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 80 people

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

Started

Jan 2018

Expected to finish

Jan 2030

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

Children (under 18), adults (18 to 64) and older adults (65 and over)

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: 1\. Patients with missing central or lateral incisor Exclusion Criteria: 1. inadequate edentulous space for the pontic 2. signs of bruxism 3. abutment tooth with active periodontal or periapical disease 4. inadequate enamel bonding surface of the abutment tooth 5. inadequate interocclusal space for a retainer wing and a proximal connector 6. pontic guidance 7. physical or psychological disease likely to interfere with normal conduct of the study

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As listed by the trial registrant

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

Adults Children Debonding Missing incisors Zirconia surface pretreatment

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

  • Medical Faculty - University of Ljubljana Ljubljana

    RECRUITING

    Ljubljana, 1000, Slovenia

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