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Can a new Tooth-Preparation technique keep gums healthier around crowns?

NCT ID NCT06496828

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

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 01, 2026 · Last updated Sep 02, 2026 · Updated 1 time

Summary

This trial tests whether a newer tooth-preparation method, called biologically-oriented preparation technique (BOPT), keeps gums healthier than the conventional shoulder-margin method when placing all-ceramic crowns. Researchers will compare gum health measures, such as plaque, bleeding, and gum stability, in 60 adults who need at least two crowns. Participants receive crowns prepared with one of the two techniques, and their gum response is tracked over time. The goal is to see which approach better preserves the supporting tissues around the restored teeth.

What this could mean

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

Active substance
Biologically-oriented preparation technique (BOPT) compared to conventional shoulder-margin preparation for all-ceramic crowns
What this could lead to
If BOPT proves better, dentists may adopt it to reduce gum inflammation and maintain healthier tissues around crowns, improving long-term dental outcomes.
What could go wrong
This is a small, single-center study with 60 participants, so results may not apply broadly. The technique requires skill, and outcomes depend on patient oral hygiene and follow-up care.

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 60 people

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

Started

Apr 2024

Expected to finish

Dec 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

19 to 80 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 older than 18. * Two teeth at least needed to be restored with full crowns (each patient needs at least two single crowns). * Stable occlusion. * Good oral hygiene. * Periodontally healthy teeth. * Nonsmoking or smoking less than ten cigarettes/day. * Probing depth between 1 and 3 mm. Exclusion Criteria: * Patients younger than 18. * Parafunctional habits. * Active periodontal disease. * Poor oral hygiene. * Systemic disease that may affect the periodontal health. * Pregnancy. * Radiation or chemotherapy. * Treatment by Bisphosphonates medication. * Patients who are unable or unwilling to attend follow-up visits

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As listed by the trial registrant

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

CROWNS Tooth preparation

How to take part

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  1. The places running it

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  2. The official record

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    Open the record ↗

  3. A doctor treating you

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Contacts and locations

Locations

  • Department of Fixed Prosthodontics, University of Damascus Dental School, Damascus, Syria

    RECRUITING

    Damascus, DM20AM18, Syria

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