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Dental implant study tests which abutment size preserves jawbone best

NCT ID NCT07196228

Knowledge-focused Sponsor: Menoufia 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 This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looks at how the size of the connector piece (abutment) on a dental implant affects the bone around it. Researchers will place implants in 40 adults with a missing back tooth and use either a narrow or regular abutment. Over 24 months, they will measure bone changes on X-rays to see which size leads to better bone stability.

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

About 40 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Sep 2025

An estimate. Start dates often move.

Expected to finish

Dec 2028

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

20 to 70 years

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 Adults ≥18 years old. Single missing tooth in a posterior quadrant, bordered by adjacent natural teeth. Adequate bone volume to place implants 8.5-10 mm in length and 4 mm in diameter without the need for bone or soft tissue grafting. Presence of a natural tooth or an implant-supported fixed restoration as an antagonist. Good oral hygiene with a plaque index \<25%. Willing and able to comply with study procedures and follow-up schedule. Provided written informed consent. \*\*Exclusion Criteria Systemic conditions or medications affecting bone metabolism (e.g., bisphosphonates, corticosteroids). Untreated periodontitis, persistent oral infections, or poor oral hygiene. Metabolic bone diseases (e.g., osteoporosis, renal insufficiency, immunodeficiency, leukocyte dysfunction). History of head and neck radiotherapy. Physical or mental disability preventing adequate oral hygiene or compliance. Heavy smoking (\>10 cigarettes/day). Alcoholism or drug abuse. Pregnancy or breastfeeding. Bruxism or oral mucosal diseases. Need for bone regeneration procedures before implant placement. Inability or unwillingness to attend follow-up visits.

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Conditions

The condition(s) this trial relates to.

Bone Diseases, Metabolic osteoporosis

As listed by the trial registrant

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

Bone loss

How to take part

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  1. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  2. A doctor treating you

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