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Could a needle-free gum treatment replace surgery for bone defects?

NCT ID NCT03797807

Disease control Sponsor: Queen Mary University of London 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 29, 2026 · Last updated Jun 30, 2026 · Updated 1 time

Summary

This study compares two minimally invasive treatments for deep gum disease bone defects: a non-surgical approach (MINST) and a surgical one (MIST). Researchers want to see if the non-surgical method can achieve similar bone and gum attachment improvements as surgery, but with less discomfort. The trial involves 66 adults aged 25-70 with advanced periodontitis and at least one deep bone pocket. Participants are randomly assigned to one of the two treatments, and results are measured after 9 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
Minimally invasive non-surgical periodontal therapy (MINST) and minimally invasive surgical therapy (MIST)
What this could lead to
If MINST works as well as surgery, it could offer a less invasive, more comfortable option for treating deep gum disease bone defects.
What could go wrong
This is a small, single-center study, and the non-surgical approach may not prove as effective as surgery for all patients. Results may not apply to smokers or those with certain medical conditions.

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

66 people

The number who actually took part.

Started

Mar 2019

Finished

Dec 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

25 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: 1. Age 25-70 2. Diagnosis of 'Periodontitis' stage III or IV (grades A to C) 3. Presence of ≥1 'intrabony defect' (PPD, \>5 mm with intrabony defect depth ≥3mm at screening radiograph), 4. Signed informed consent. - Exclusion Criteria: 1\. Smoking (current or in past 5 years) including e-cigarettes/vaping 2. Medical history including diabetes or hepatic or renal disease, or other serious medical conditions or transmittable diseases 3. History of conditions requiring prophylactic antibiotic coverage prior to invasive dental procedures 4. Antiinflammatory or anticoagulant therapy during the month preceding the baseline exam 5. Systemic antibiotic therapy during the 3 months preceding the baseline exam 6. History of alcohol or drug abuse, 7. Self-reported pregnancy or lactation 8. Other severe acute or chronic medical or psychiatric condition or laboratory abnormality that according to the investigator may increase the risk associated with trial participation, 9. Periodontal treatment to the study site within the last 12 months (excluding not-extensive subgingival debridement as judged by the examining clinician). \-

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Conditions

The condition(s) this trial relates to.

periodontitis

As listed by the trial registrant

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

Periodontitis

Contacts and locations

Locations

  • Barts and The London Dental Hospital

    London, E1 2AD, United Kingdom

More trials for these conditions

Other studies related to the condition(s) this trial covers.