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Denture bar showdown: which material keeps jawbone healthier?

NCT ID NCT07429149

Knowledge-focused Sponsor: Sara Mohamed Fakhry Meligy Mohamed Source: ClinicalTrials.gov ↗

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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 Results may not be published yet.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)
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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
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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This status has not been confirmed recently, so it may be out of date.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 looked at two different materials for the bar that connects dental implants to a denture in people with no lower teeth. Twelve men aged 50-60 received two implants and were given dentures supported by either a standard metal bar or a newer zirconia bar. The researchers checked bone loss and gum health at the start, 6 months, and 12 months to see which bar worked better.

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

12 people

The number who actually took part.

Started

Jul 2022

Finished

Jun 2025

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

50 to 60 years

Sex

Male participants only

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: * • Patients age range was between 50-60 years old. * Only male patients were selected to participate in this study. * All patients were apparently free from any systemic or debilitating diseases that might affect bone metabolism or delay post-operative healing. * Patients were free from any temporo-mandibular joint disorders. * Patients were free from any neuromuscular or bony disorders, and medically free from any neurologic disorder affecting the neuro-muscular system. * Patients' residual alveolar ridges were covered with firm, healthy mucosa, free from any signs of inflammation, ulceration, or flabby tissue. * Mandibular edentulous alveolar ridge areas had sufficient width and height of alveolar bone. * Patients exhibited Angle Class I maxillo-mandibular relationship and sufficient inter-arch space. * Patients had good oral hygiene. * A period of at least six months up to one year had elapsed from the last extraction. Exclusion Criteria: * • Patients with systemic diseases that might affect bone quality, contribute to bone resorption, increase surgical risk, or delay/complicate post-operative healing. * Patients with parafunctional habits such as bruxism, clenching, or grinding. * Patients with residual ridge covered by inflamed, ulcerated, or flabby mucosa. * Patients with inadequate inter-arch space. * Patients with abnormal tongue behavior and/or size. * Patients with xerostomia or excessive salivation. * Heavy smoker patients and alcoholic patients.

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As listed by the trial registrant

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

Edentulous mandible

Contacts and locations

Locations

  • Faculty of Dental Medicine for Girls, Al-Azhar University

    Cairo, Nasr City, Egypt

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