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New dental attachment system aims to improve comfort and reduce complications for Full-Arch dentures

NCT ID NCT07701200

Disease control Sponsor: Mansoura University Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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)
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This status has not been confirmed recently, so it may be out of date.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 14, 2026 · Last updated Jul 15, 2026 · Updated 1 time

Summary

This study compares two types of dental implant attachments used in full-arch fixed dentures (All-on-4) for people with no teeth in the lower jaw. The OT-Bridge system is tested against standard multiunit abutments to see which leads to higher patient satisfaction and fewer prosthetic problems like screw loosening or fractures. Twenty patients will be followed for 12 months after receiving their dentures. The goal is to help dentists choose the best system for long-lasting, comfortable results.

What this could mean

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

Active substance
OT-Bridge system (a prosthetic attachment system for implant-supported fixed full-arch prostheses) compared with multiunit abutments (prosthetic components placed on dental implants to correct angulation and provide a stable platform for screw-retained restorations)
What this could lead to
If the OT-Bridge system proves better, it could offer a more stable and comfortable option for people needing full-arch fixed dentures, reducing complications like screw loosening or breakage.
What could go wrong
This is a small, early-stage study with only 20 patients, so results may not apply to everyone. Differences between the two systems might be small or not clinically meaningful.

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

20 people

The number who actually took part.

Started

Dec 2023

Finished

Jul 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

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: * Adult patients (≥18 years) with edentulous mandible. * Patients receiving or having received All-on-4 dental implants in the mandible. * Adequate implant stability to support prosthetic loading. * Patients indicated for screw-retained full-arch fixed prostheses using either OT-Bridge system or multiunit abutments. * Patients willing to participate and attend follow-up visits at T0, T6, and T12 months. Exclusion Criteria: * Patients with uncontrolled systemic conditions affecting healing (e.g., uncontrolled diabetes). * Patients with failed or mobile implants. * Severe parafunctional habits (e.g., uncontrolled bruxism). * Poor oral hygiene compliance. * Patients unable to attend follow-up visits

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Conditions

The condition(s) this trial relates to.

anodontia primary orthostatic tremor

As listed by the trial registrant

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

All-on-4 Complete edentulism Implant supported prosthesis Multiunnit abutments Ot- bridge

Contacts and locations

Locations

  • Ministry of Health and Population, Egypt - Kafr Demira Health Unit

    Al Mansurah, 00000, Egypt

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