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Plastic vs. metal: which denture material wins for comfort and cost?

NCT ID NCT06789627

Symptom relief Sponsor: Cairo 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 29, 2026 · Last updated Jul 30, 2026 · Updated 1 time

Summary

This trial tests whether a plastic-like material called PEEK, used to make partial dentures with digital design and milling, can match or beat traditional metal dentures. Thirty adults with missing lower back teeth on both sides will receive one type of denture. Researchers will measure how each affects quality of life and overall cost.

What this could mean

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

Active substance
a PEEK (polyether ether ketone) removable partial denture framework made by CAD/CAM
What this could lead to
If PEEK dentures work as well as metal ones, they could offer a more comfortable, lighter, and metal-free option for people with partial tooth loss.
What could go wrong
This is a small, early-stage trial with only 30 participants, so results may not apply to everyone. PEEK may not be as durable or fit as well as metal.

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

30 people

The number who actually took part.

Started

Oct 2021

Finished

Apr 2024

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 50 years

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 with bilateral free end saddles in the mandible (Kennedy class I) with the last standing abutment second premolar * Opposing dentition is fully intact or restored to be intact * Adequate inter-arch space of at least 7mm * Angle's class I maxilla-mandibular relationship * Patients with no periodontal disease and good oral hygiene * Cooperative patients showing motivation to follow-up Exclusion Criteria: * Periodontal affection of the abutment teeth * Skeletal mal-relationship * Unmotivated patients to maintain adequate oral hygiene and to follow up---- ---- Patients with neuro-mascular disorders * Systemic disease affecting periodontal health like uncontrolled diabetes

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As listed by the trial registrant

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

Oral health-related quality of life Partial edentulism

Contacts and locations

Locations

  • Faculty of dentistry, Cairo University

    Cairo, Giza Governorate, 0, Egypt

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