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New implant method may offer better fit for lower dentures

NCT ID NCT03837158

Disease control Sponsor: University of Bern 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether using four small, one-piece implants with special attachments is better than the standard two-piece implants for holding a lower denture in place. The goal is to improve comfort and quality of life for elderly people who are unhappy with their current dentures. Researchers will compare patient satisfaction, implant survival, and oral health over one year.

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

72 people

The number who actually took part.

Started

Sep 2019

Expected to finish

Aug 2033

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: * At patient level: * Written informed consent * Age ≥ 18 years * Sufficient complete dentures (Marxkors and Ferger, 1989) not older than 1 year * Patient is unsatisfied with mandibular denture to the degree that he/she seeks treatment * At site level: * Healed edentulous mandible (minimum 8 weeks since last extraction) * Minimal ridge dimensions 5.5 mm (width) by 12 mm (height) in the anterior (interforaminal) area, allowing the placement of 3.3 (endosseous diameter) by 10 mm (length) implants * Opposing dentition: complete denture on a edentulous maxilla * Physical status (PS) 1 and 2 (American Society of Anesthesiologists) Exclusion Criteria: * At patient level * Any physical or mental disorder that would interfere with the ability to perform adequate oral hygiene or the capability of providing written informed consent and compliance to the protocol * Any disorder that would interfere with wound healing or represent a contraindication for oral surgery such as, but not limited to, uncontrolled diabetes or conditions resulting in or requiring immunosuppression, radiation, chemotherapy, frequent use of antibiotics or antiresorptive medication such as bisphosphonates * Pregnancy or lactation * Heavy smoking habit with \> 20 cig/d * Severe bruxism or clenching habits, present oro-facial pain * At site level: * Ridge defects requiring staged bone augmentation procedures (simultaneous Guided Bone Regeneration (GBR) within the ridge contour allowed)

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As listed by the trial registrant

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

Dental implants

Contacts and locations

Locations

  • Private Practice Dr. B. Wallkamm

    Langenthal, Canton of Bern, 4900, Switzerland

  • University of Bern

    Bern, 3010, Switzerland

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