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New gum fix: could a collagen patch replace the need for a second surgery?

NCT ID NCT03675334

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This study tested a porcine collagen matrix (Mucoderm) against the standard connective tissue graft for covering exposed tooth roots due to gum recession. Eighteen adults with gum recession on both sides of the mouth received one treatment on each side. The goal was to see if the collagen matrix could work as well as the graft, while avoiding the need for a second surgical site.

What this could mean

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

Active substance
porcine collagen matrix (Mucoderm)
What this could lead to
If successful, this could offer a simpler treatment for gum recession that avoids the need for a second surgical site to harvest tissue.
What could go wrong
This is a small, completed study with only 18 participants, so results may not apply to everyone. The collagen matrix may not work as well as the standard graft in all cases.

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

18 people

The number who actually took part.

Started

Apr 2016

Finished

Jan 2019

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 to 60 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: * CEJ without significant damage; * localized bilateral RT1 gingival recession ≥3 mm in the same arch Exclusion Criteria: * previous periodontal surgical treatment on the involved sites; * smokers * pregnants or lactating * compromised systemic health and contraindications for periodontal surgery

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Conditions

The condition(s) this trial relates to.

gingival recession

As listed by the trial registrant

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

Gingival recession

Contacts and locations

Locations

  • School of Dentistry of Ribeirao Preto - University of Sao Paulo

    Ribeirão Preto, São Paulo, Brazil

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