Gain of Keratinized Mucosa Around Teeth and Dental Implants Using a Combination of Strip Gingival Graft and Acellular Dermal Matrix

Overview

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).

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: Randomized
    • Intervention Model: Parallel Assignment
    • Primary Purpose: Treatment
    • Masking: Single (Participant)
  • Study Primary Completion Date: August 2022

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.

Interventions

  • 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 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: Free Gingival graft
    • 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.

Arms, Groups and Cohorts

  • Experimental: 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.
  • Active Comparator: Free gingival graft.
    • 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.

Clinical Trial Outcome Measures

Primary Measures

  • 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.

Participating in This Clinical Trial

Inclusion Criteria

  • 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) Exclusion Criteria:

  • 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

Gender Eligibility: All

Minimum Age: 18 Years

Maximum Age: 99 Years

Are Healthy Volunteers Accepted: Accepts Healthy Volunteers

Investigator Details

  • Lead Sponsor
    • University of Alabama at Birmingham
  • Provider of Information About this Clinical Study
    • Principal Investigator: Hussein Basma, Principal Investigator – University of Alabama at Birmingham
  • Overall Contact(s)
    • Hussein Basma, DDS, MS, 2059344506, basma86@uab.edu

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