Amnion-Chorion Allograft Barrier Used for Root Surface and Guided Tissue Regeneration

March 22, 2021 updated by: Yusuke Hamada, Indiana University

Amnion-Chorion Allograft Barrier Used for Root Surface and Guided Tissue Regeneration for Periodontal Intrabony Defects and Grade II Furcation Defects.

The purpose of this pilot project is to evaluate the efficacy of application of Amnion-Chorion allograft membrane on the root surface of periodontally diseased teeth in conjunction with bone substitute covered by Amnion-Chorion allograft in a combination Guided Tissue Regeneration (GTR) treatment of periodontal intrabony and furcation defects.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Patients who are referred to the Graduate Periodontics Clinic at Indiana University School of Dentistry for the treatment of severe chronic/aggressive periodontitis will be screened for possible participation in this study. Up to 20 subjects will be accepted into this study.

Written informed consent and authorization will be obtained from all participants and they will be given a copy of the signed informed consent documents.

The procedures listed below are all within standard care for a regenerative therapy around the teeth except the application of the membrane on the root surface prior to the bone grafting. No data collected for this study will be taken from sources outside of that already recorded for standard of care procedures.

Clinical Measurements A single calibrated examiner will perform clinical baseline and 6-month follow up measurements. O'Leary plaque score will be assessed. Six sites of each tooth of probing depth (PD), recession (REC) and clinical attachment level (CAL) will be recorded to the nearest millimeter with a University of North Carolina Probe (UNC Probe). For Glickman grade II furcation defects, in addition to the previous measurements, vertical probing pocket depth (VPD) and horizontal probing depth (HPD) will be measured.

Radiographic assessment will be performed with vertical bite-wing radiographs at baseline and 6-month post-surgical treatment. In order to maximize the standardization of the angulation of radiographs, bite registration will be taken prior to the first radiograph and utilized with beam-guiding device. It will be stored to be used post operatively. Sirona Dental Systems© with 7mA 60kV with 0.16s exposure time will be utilized for all radiographs. Digital #2 films manufactured by Air Techniques Inc. will be used for radiographic assessment. Bony defect (BD) will be defined as the most coronal point where the periodontal ligament space showed a continuous width. If several bony contours could be identified, the most apical one that crossed the root will be defined as the boney defect and the most coronal one as alveolar crest. If the cemento-enamel junction (CEJ) was destroyed by the restorative treatment, the margin of the restoration will be taken as a landmark. Beam guided device will be used as a calibration of measurements. The change of bone fill and angulation will be recorded.

All surgery will be rendered at the Graduate Periodontics Clinic at Indiana University School of Dentistry. All the patients will be treated under local anesthesia (2% lidocaine with 1/100,000epi or 4% articaine with 1/100,000epi). If the patient is willing to receive the surgery under intravenous or oral sedation, those services will be provided based on the necessity. After local anesthesia, intracrevicular incisions will be made and full-thickness mucoperiosteal flaps will be raised both buccally and lingually; the surgeon will try to preserve the maximum extent of the marginal and interdental gingival tissue to obtain primary closure and membrane coverage. Vertical releasing incisions will only be used if necessary to gain access for defect debridement. The alveolar bone will be exposed at least 3 mm beyond the edges of the defect, and periosteal releasing incisions will be made to ensure complete membrane coverage at the time of suturing if necessary. All granulation tissue will be removed, the defects will be debrided, and the roots will be thoroughly scaled and root planed by hand instruments and ultrasonic devices. Following debridement, 17% Ethylenediaminetetraacetic acid (EDTA) solution with cotton pellet will be applied on the root surface for 2 minutes. After thorough irrigation with saline, BioXclude® (Amnion-Chorion Membrane: Food and Drug Administration (FDA) Approved materials for intrabony defects) will be cut into two pieces. The amnion-chorion BioXclude membrane is regulated by the FDA under section 361 of the Public Health Service Act as a "Human cells, tissues, and cellular or tissue-based product" (HCT/P). The FDA does not require pre-market approval for these products like it would with drugs, biologics or devices. Therefore, this product will have no associated "investigational device exemption" (IDE) number. The FDA views using amnion chorion as a wound covering to aid in the healing of tissues throughout the body to be a "homologous use". One goes to the root surface, and coronal portion of the membrane has to be >3mm coronal of CEJ. Once applied the membrane, one drop of saline will be applied to obtain better adaptation of membrane on the root surface. Bone substitutes 0.5cc (Particle size of 0.25-0.5mm of Corticocancellous, Maxxeus®) will be hydrated for at least 10min prior to application, and applied into the defects. The bone particles will not exceed the edge of defects in order to avoid over fill. Following the bone graft will be delivered to the defect. The coronal portion of excessive membrane will be just folded over the graft materials. The other BioXclude membrane will be utilized over the grafts, and will always be placed coronal to the interproximal bone crest so that it completely covers the defect and extends 2 to 3 mm beyond the residual bone. No sutures, pins, or tacks will be used for membrane fixation or stabilization. The orientation of the membrane will not matter. Vertical or horizontal mattress sutures with 5-0 Proline (Monofilament/Nylon) will be placed in the interproximal tissues to obtain primary closure as much as possible.

Intra-surgical Clinical Measurements. Intrabony defects: defect morphology will be measured (1 wall, 2 walls and/or those combinations) from the deepest aspect of the defect from the most coronal side of edge of the defects.

Furcation defects: 1) Cementoenamel junction to roof of furcation (CEJ-ROF); 2) roof of furcation to base of defect (ROF-BOD); 3) roof of furcation to crest of bone at furcation entrance (ROF-COB); 4) crest of bone to base of defect (COB-BOD); 5) root divergence at crest of bone (RDCB); 6) horizontal extent (base) of defect at level of furcation entrance (HBODF); 7) horizontal extent (base) of defect at level of crest of bone (HBOD-C); and 8) cemento-enamel junction to interproximal crest of bone (CEJ-INTPRX)

All patients will receive antibiotics (875mg amoxicillin twice /day) for one week. If participants are allergic to amoxicillin, clindamycin (150mg twice/day) for one week will be prescribed. Analgesics (600mg ibuprofen three times/day) will be prescribed as needed for discomfort. Pt will be seen one, two and four weeks as a post-operative follow up. Patients will be advised to rinse twice daily with 0.12% chlorhexidine for 2 weeks after surgery. Patients will be instructed to refrain from brushing the teeth in the surgical area for 2 weeks. After that, they will be instructed to initiate brushing with an extra-soft toothbrush. Subjects will be recalled at 4-week intervals after 4weeks from surgical procedure for a period of 6 months for plaque scoring, oral hygiene instruction, and professional prophylaxis as needed. No subgingival probing or instrumentation will be performed at the experimental sites until the 6-month follow-up appointment.

Study Type

Interventional

Enrollment (Actual)

4

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Indiana
      • Indianapolis, Indiana, United States, 46202
        • Indiana University School of Dentistry

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 75 years (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. ASA class I or II;
  2. age >18 years old;
  3. Non-smoker;
  4. diagnosis of chronic or aggressive periodontitis previously treated with nonsurgical mechanical debridement; 5) patients have at least one two-wall intrabony defect in interproximal areas with radiographic evidence of an intrabony component of ≥ 4 mm, PPD ≥ 6 mm with 1-wall or 2-wall or combination of those defects;

6) Glickman Grade II furcation involvement on buccal of mandibular or maxillary first or second molars without soft tissue exposure of furcation entrance; 7) tooth mobility Miller Grade <1; 8) more than 2mm of keratinized tissue with those selected teeth.

Exclusion Criteria:

  1. did not meet all inclusion criteria;
  2. pregnancy or nursing woman;
  3. subjects with active systemic or localized infection (exclude chronic periodontitis);
  4. poor compliance or failure to maintain good oral hygiene as ascertained by the presence of full-mouth plaque score ≥ 20%;
  5. restorations or caries on root surfaces or untreated endodontic infections;
  6. participants received periodontal surgical treatment on the same site of this study within 2 years;
  7. use of systemic or local antibiotics on the anticipated surgical sites during the past 3 months.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT
  • Allocation: NA
  • Interventional Model: SINGLE_GROUP
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: Test group
Application of Amnion-Chorion allograft membrane (ACM) on the root surface of periodontally diseased teeth in conjunction with corticocancellous allograft bone substitute covered by ACM in a combination GTR treatment of periodontal intrabony and furcation defects.
Procedure: Amnion-Chorion allograft membrane on the root surface of periodontally diseased site.
Application of Amnion-Chorion allograft membrane (ACM) on the root surface of periodontally diseased teeth in conjunction with corticocancellous allograft bone substitute covered by ACM in a combination GTR treatment of periodontal intrabony and furcation defects

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Probing Depth Change
Time Frame: Baseline and 6 months
Probing depth was measured at intrabony defect following surgical procedure.
Baseline and 6 months
Clinical Attachment Change
Time Frame: Baseline and 6 months
Clinical Attachment is defined as the sum of probing depth and gingival recession. The amount of gain of attachment level will be measured.
Baseline and 6 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Indiana University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (ACTUAL)

June 14, 2017

Primary Completion (ACTUAL)

September 10, 2019

Study Completion (ACTUAL)

September 10, 2019

Study Registration Dates

First Submitted

March 24, 2017

First Submitted That Met QC Criteria

March 24, 2017

First Posted (ACTUAL)

March 30, 2017

Study Record Updates

Last Update Posted (ACTUAL)

April 14, 2021

Last Update Submitted That Met QC Criteria

March 22, 2021

Last Verified

March 1, 2021

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 1608175133

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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