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Dental implant depth showdown: which placement saves more bone?

NCT ID NCT07468747

Disease control Sponsor: Gulf Medical 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 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests whether placing a short dental implant 2 mm below the bone crest (subcrestal) is better for bone and gum health than placing it right at the bone crest (crestal). About 58 adults needing a single tooth replacement in the back of the mouth will be randomly assigned to one of the two placement depths. Researchers will measure bone changes and gum health over 12 months using X-rays and clinical exams.

What this could mean

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

Active substance
Dental implant placement procedure (crestal vs subcrestal)
What this could lead to
If successful, this study could help dentists choose the best implant depth to reduce bone loss and improve long-term implant success.
What could go wrong
This is a small, early-stage trial with only 58 participants, so results may not apply to everyone. Differences between groups may 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

About 58 people

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

Expected to start

Mar 2026

An estimate. Start dates often move.

Expected to finish

May 2027

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: 1. Adults aged 18 years or older requiring dental implant therapy for replacement of a missing tooth in the posterior maxilla or mandible. 2. Presence of sufficient bone volume to receive a short dental implant without the need for bone augmentation procedures. 3. Patients in good general health or with controlled systemic conditions that do not contraindicate implant surgery. 4. oral hygiene, defined as a plaque score ≤25%. 5. Presence of healthy or treated periodontal tissues prior to implant placement. 6. Patients willing and able to return for follow-up visits at 3, 6, and 12 months. 7. Patients who provide written informed consent to participate in the study. Exclusion Criteria: 1. Patients with uncontrolled systemic diseases (e.g., uncontrolled diabetes mellitus, immunosuppressive disorders). 2. History of radiotherapy in the head and neck region. 3. Patients currently receiving bisphosphonate therapy or other medications affecting bone metabolism. 4. Active periodontal disease or untreated oral infections. 5. Heavy smokers (≥10 cigarettes per day). 6. Presence of parafunctional habits such as severe bruxism or clenching. 7. Patients requiring simultaneous bone grafting or sinus augmentation at the implant site. 8. Pregnant or lactating women. 9. Patients unable or unwilling to comply with the study protocol or follow-up schedule.

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Conditions

The condition(s) this trial relates to.

Tooth Loss

As listed by the trial registrant

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

Edentulism Peri implant bone loss Tooth loss

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. 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 ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Gulf Medical University

    Ajman, 4184, United Arab Emirates

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