Gingival RecessionNCT04920136
Gain of Keratinized Mucosa Around Teeth and Dental Implants Using a Combination of Strip Gingival Graft and Acellular Dermal Matrix
A study testing Strip Free gingival graft (SGG) + Acellular Dermal Matrix graft (ADM) and Free Gingival graft in people with Gingival Recession and Lack of Keratinized Attached Peri-implant Mucosa, run by University of Alabama at Birmingham at 1 site in United States.
Trial summary
This study is to compare the two techniques to achieve change in the tissue quality at areas of lack of Keratinized Tissue (KT) using soft tissue grafting with autogenous graft material (Free Gingival Graft)(FGG) vs Strip gingival graft with acellular dermal matrix (ADM) (SGG+ADM). Read more about this study
- Who is it for?
- Ages 18 to 99 yearsHealthy volunteers can take part
- Conditions the study is for
- Gingival Recession, Lack of Keratinized Attached Peri-implant Mucosa, Thin Gingiva
- What is being tested?
- Strip Free gingival graft (SGG) + Acellular Dermal Matrix graft (ADM) and Free Gingival graft
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 20 participants
- Where
- 1 siteUnited States
- Study dates
- 17 Sep 2021to 30 Dec 2027
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 99 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- English speaking
- At least 18 years old
- Able to read and understand informed consent document
- Patients with teeth/implants lacking keratinized tissue.
- Must be a patient of the UAB Dental School
- Presence of periodontally healthy, non-carious neighboring teeth, healthy implants or edentulous ridges on either side of the involved site(s)
Who cannot join
- Non-English speaking
- Less than 18 years old
- Smokers/tobacco users (>10 cigarettes/day)
- Patients with systemic pathologies or conditions contraindicating oral surgical procedures or adversely affecting wound healing
- Presence of active periodontal disease
- Previous soft tissue grafting at the site(s) to be treated
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
Unversity of Alabama at Birmingham, School of Dentistry
Birmingham, Alabama, 35294-0007
Hussein Basma, DDS, MS, 205-975-2888, basma86@uab.edu
Sarah Startley, DMD, 205-975-8711, ss1971@uab.edu
About this study
This study is to compare the two techniques to achieve change in the tissue quality at areas of lack of Keratinized Tissue (KT) using soft tissue grafting with autogenous graft material (Free Gingival Graft)(FGG) vs Strip gingival graft with acellular dermal matrix (ADM) (SGG+ADM).
Read the detailed description
This investigation is a randomized controlled trial of two techniques to achieve change in the tissue quality at areas of lack of Keratinized Tissue (KT) using soft tissue grafting with autogenous graft material (Free Gingival Graft)(FGG) vs Strip gingival graft with acellular dermal matrix (ADM) (SGG+ADM). To evaluate to determine if either grafting technique (FGG vs SGG+ADM) demonstrates superiority in clinical (amount of KT increase, tissue thickness increase, and practitioner-assessed esthetics) and patient-centered outcomes (pain, swelling, change in daily activities, and patient-assessed esthetics) in a controlled study.
- Being tested
- Strip Free gingival graft (SGG) + Acellular Dermal Matrix graft (ADM), Free Gingival graft
- Keywords
- Attached mucosa, Keratinized tissue, Dental implants, Connective tissue
- Medical subject headings
- Gingival Recession
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Strip Free gingival graft (SGG) + Acellular Dermal Matrix graft (ADM)Procedure or surgery
A horizontal incision is then placed at the middle of residual KT. Two vertical releasing incisions are followed to allow for apical displacement of the flap. The flap will be then elevated with a split-thickness flap beyond the mucogingival junction where it is sutured at this apical position using a mattress (5-0, monocryl) suture. The recipient site should ideally retain intact periosteum that is firmly attached to bone with no loose fibers, no irregularities and no perforations.
Free Gingival graftProcedure or surgery
Two vertical incisions are made, and a partial thickness flap are designed to provide a firm and immobile periosteal bed. The raised partial thickness flap will be excised. Muscle and unattached connective tissue fibers are thoroughly scraped with a scalpel to prevent graft mobility. Autogenous FGG was harvested with #15C scalpel blade from hard palate at the same side randomly selected to receive the FGG. Donor area was sutured with 5-0 gut sutures. FGG, is placed and stabilized with simple interrupted 5-0 vicryl sutures at recipient site coronal border and horizontal or periosteal anchorage sutures over the graft.
| Study group | Role | What they receive |
|---|---|---|
| Strip Free gingival graft (SGG) + Acellular Dermal Matrix graft (ADM) | Experimental | A horizontal incision is then placed at the middle of residual KT. Two vertical releasing incisions are followed to allow for apical displacement of the flap. The recipient site should ideally retain intact periosteum that is firmly attached to bone with no loose fibers, no irregularities and no perforations.
A strip of a free gingival graft is then harvested from the patient's palate. This strip is only 2 to 3 mm wide ,1 to 1.5 mm thick and has an appropriate length to cover the full apical extension of the recipient site. The strip is sutured immediately with 6-0 monocryl sutures. Coronal to the strip, the periosteal bed is covered with ADM, which is already rehydrated in sterile saline for 10 min, trimmed and customized to fit the available space. The ADM is then stabilized on the periosteal bed with the epithelium side facing upward. The ADM is fixed on the recipient bed by periosteal 6-0 monocryl sutures. Receives: Procedure: Strip Free gingival graft (SGG) + Acellular Dermal Matrix graft (ADM) |
| Free gingival graft. | Active comparator | Two vertical incisions are made, and a partial thickness flap are designed to provide a firm and immobile periosteal bed. The raised partial thickness flap will be excised. Muscle and unattached connective tissue fibers are thoroughly scraped with a scalpel to prevent graft mobility. Autogenous FGG was harvested with #15C scalpel blade from hard palate at the same side randomly selected to receive the FGG. Donor area will be sutured with 5-0 gut sutures. FGG, is placed and stabilized with simple interrupted 5-0 vicryl sutures at recipient site coronal border and horizontal or periosteal anchorage sutures over the graft. Receives: Procedure: Free Gingival graft |
What is being measured
The primary outcome is the main question the study is designed to answer.
Quality of soft tissue regenerated
Compare the change in soft tissue quality (attached or keratinized ) between two used soft tissue grafts by superimposing the before and after intraoral scans and the calculating using a software the difference of soft tissue gain between both scans in (mm)
Measured: From baseline to 12 months
Quantity of soft tissue regenerated (Width of Keratinized Tissue)
Using a periodontal probe , the width of keratinized tissue will be measured in (mm) and compared between two grafts used.
Measured: From baseline to 12 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Jun 2021
- Study start17 Sep 2021
- Primary completion30 Dec 2026 (estimated)
- Study completion30 Dec 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Gingival RecessionStudies of the same condition, open and under way.
- More trials run by University of Alabama at BirminghamThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 20 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University of Alabama at Birmingham
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Hussein Basma, University of Alabama at Birmingham
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04920136
- Sponsor's protocol ID
- IRB-300006910
- Other IDs
- UAB-Perio
- Status last verified
- Jun 2026
- First submitted
- 1 Jun 2021
- Last updated
- 22 Jul 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 22 Jul 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Gain of Keratinized Mucosa Around Teeth and Dental Implants Using a Combination of Strip Gingival Graft and Acellular Dermal Matrix
- ClinicalTrials.gov ID
- NCT04920136
- Acronym / sponsor ID
- IRB-300006910
- Keywords
- Attached mucosa, Keratinized tissue, Dental implants, Connective tissue
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 20 participants (estimated)
- Lead sponsor
- University of Alabama at BirminghamUniversity, hospital or other
- Study start
- 17 Sep 2021 (actual)
- Primary completion
- 30 Dec 2026 (estimated)
- Study completion
- 30 Dec 2027 (estimated)
- First posted
- 9 Jun 2021 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study is to compare the two techniques to achieve change in the tissue quality at areas of lack of Keratinized Tissue (KT) using soft tissue grafting with autogenous graft material (Free Gingival Graft)(FGG) vs Strip gingival graft with acellular dermal matrix (ADM) (SGG+ADM).
Detailed description
This investigation is a randomized controlled trial of two techniques to achieve change in the tissue quality at areas of lack of Keratinized Tissue (KT) using soft tissue grafting with autogenous graft material (Free Gingival Graft)(FGG) vs Strip gingival graft with acellular dermal matrix (ADM) (SGG+ADM). To evaluate to determine if either grafting technique (FGG vs SGG+ADM) demonstrates superiority in clinical (amount of KT increase, tissue thickness increase, and practitioner-assessed esthetics) and patient-centered outcomes (pain, swelling, change in daily activities, and patient-assessed esthetics) in a controlled study.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Strip Free gingival graft (SGG) + Acellular Dermal Matrix graft (ADM) | Experimental | Procedure: Strip Free gingival graft (SGG) + Acellular Dermal Matrix graft (ADM)A horizontal incision is then placed at the middle of residual KT. Two vertical releasing incisions are followed to allow for apical displacement of the flap. The recipient site should ideally retain intact periosteum that is firmly attached to bone with no loose fibers, no irregularities and no perforations. A strip of a free gingival graft is then harvested from the patient's palate. This strip is only 2 to 3 mm wide ,1 to 1.5 mm thick and has an appropriate length to cover the full apical extension of the recipient site. The strip is sutured immediately with 6-0 monocryl sutures. Coronal to the strip, the periosteal bed is covered with ADM, which is already rehydrated in sterile saline for 10 min, trimmed and customized to fit the available space. The ADM is then stabilized on the periosteal bed with the epithelium side facing upward. The ADM is fixed on the recipient bed by periosteal 6-0 monocryl sutures. |
| Free gingival graft. | Active comparator | Procedure: Free Gingival graftTwo vertical incisions are made, and a partial thickness flap are designed to provide a firm and immobile periosteal bed. The raised partial thickness flap will be excised. Muscle and unattached connective tissue fibers are thoroughly scraped with a scalpel to prevent graft mobility. Autogenous FGG was harvested with #15C scalpel blade from hard palate at the same side randomly selected to receive the FGG. Donor area will be sutured with 5-0 gut sutures. FGG, is placed and stabilized with simple interrupted 5-0 vicryl sutures at recipient site coronal border and horizontal or periosteal anchorage sutures over the graft. |
Who may qualify
- Ages
- 18 to 99 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- English speaking
- At least 18 years old
- Able to read and understand informed consent document
- Patients with teeth/implants lacking keratinized tissue.
- Must be a patient of the UAB Dental School
Key exclusion criteria (6 listed)
- Non-English speaking
- Less than 18 years old
- Smokers/tobacco users (>10 cigarettes/day)
- Patients with systemic pathologies or conditions contraindicating oral surgical procedures or adversely affecting wound healing
- Presence of active periodontal disease
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Strip Free gingival graft (SGG) + Acellular Dermal Matrix graft (ADM)A horizontal incision is then placed at the middle of residual KT. Two vertical releasing incisions are followed to allow for apical displacement of the flap. The flap will be then elevated with a split-thickness flap beyond the mucogingival junction where it is sutured at this apical position using a mattress (5-0, monocryl) suture. The recipient site should ideally retain intact periosteum that is firmly attached to bone with no loose fibers, no irregularities and no perforations. | Procedure or surgery | Strip Free gingival graft (SGG) + Acellular Dermal Matrix graft (ADM) |
| Free Gingival graftTwo vertical incisions are made, and a partial thickness flap are designed to provide a firm and immobile periosteal bed. The raised partial thickness flap will be excised. Muscle and unattached connective tissue fibers are thoroughly scraped with a scalpel to prevent graft mobility. Autogenous FGG was harvested with #15C scalpel blade from hard palate at the same side randomly selected to receive the FGG. Donor area was sutured with 5-0 gut sutures. FGG, is placed and stabilized with simple interrupted 5-0 vicryl sutures at recipient site coronal border and horizontal or periosteal anchorage sutures over the graft. | Procedure or surgery | Free gingival graft. |
Primary outcome
Quality of soft tissue regenerated
Time frame: From baseline to 12 months
Compare the change in soft tissue quality (attached or keratinized ) between two used soft tissue grafts by superimposing the before and after intraoral scans and the calculating using a software the difference of soft tissue gain between both scans in (mm)
Quantity of soft tissue regenerated (Width of Keratinized Tissue)
Time frame: From baseline to 12 months
Using a periodontal probe , the width of keratinized tissue will be measured in (mm) and compared between two grafts used.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 22 Jul 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Strip Free gingival graft (SGG) + Acellular Dermal Matrix graft (ADM) and Free Gingival graft in people with Gingival Recession and Lack of Keratinized Attached Peri-implant Mucosa, run by University of Alabama at Birmingham at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 22 Jul 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Hussein Basma, DDS, MS (2059344506, basma86@uab.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Quality of soft tissue regenerated (time frame: From baseline to 12 months). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 22 Jul 2026.