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7-Year checkup: do implant dentures hold up?

NCT ID NCT07536776

Knowledge-focused Sponsor: Mansoura 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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 14, 2026 · Updated 2 times

Summary

This study followed 27 people with no teeth who had four implants in their lower jaw to support a denture. Researchers measured bone loss and how well the denture stayed in place over 7 years. The goal was to see if this type of denture is a good long-term solution.

What this could mean

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

Active substance
implant-retained overdenture with locator attachments
What this could lead to
If successful, this could provide long-term evidence that four-implant overdentures are a reliable option for toothless patients.
What could go wrong
This is a small, retrospective study with only 27 participants, so results may not apply to everyone. It does not test a new treatment, only observes existing outcomes.

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

27 people

The number who actually took part.

Started

Jan 2018

Finished

Feb 2026

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

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 Patients rehabilitated with a mandibular overdenture retained by four dental implants. Four implants positioned in the anterior and premolar regions of the mandible. Four Locator attachments used to retain the mandibular overdenture. Availability of baseline clinical and radiographic records at the time of prosthesis insertion. Availability of clinical and radiographic records at 1-year and 7-year follow-up. Exclusion Criteria Patients with incomplete clinical or radiographic records. Patients without the required 1-year or 7-year follow-up records. Patients with radiographs that were inadequate for reliable assessment of peri-implant marginal bone levels. Patients whose records did not allow assessment of prosthetic retention at the specified follow-up periods.

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As listed by the trial registrant

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

Marginal bone loss around implants

Contacts and locations

Locations

  • Basma

    Al Mansurah, Egypt

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