A Clinical Trial to Evaluate Kerecis Oral™ Compared to Autogenous Free Gingival Graft (AFGG) Tissue to Augment Gingival Soft Tissue and Wound Healing

Early Phase 1

Completed

• Conditions: Mucogingival Deformity - Insufficient Keratinized Tissue
• Interventions: Device: Kerecis Oral™; Other: Free Gingival Graft

• Registration Number: NCT03664401
• Lead Sponsor: Kerecis Ltd.

Brief Summary

The purpose of this study is to evaluate Omega-3 Wound™ as an alternative to autogenous free gingival grafts harvested from the palate to treat human subjects with insufficient KT (\< 2 mm)

Detailed Description

Primary objective:

The primary aim will be to see if Omega-3 Wound™ is clinically superior to tissue harvested from the palate (Autogenous Free Gingival Graft) when comparing before and after measurements of: keratinized tissue. Change in KT width from time of surgery to 6 months post-surgery (22).

Secondary objectives:

1. Measures of periodontal health (probing depth, recession levels, bleeding on probing, plaque score, clinical attachment level, resistance to muscle pull, vestibular depth, healing time) over 3 months (at study entry, 4 weeks, 3 months and 6 months)

2. Time of surgery

3. Subject Discomfort Survey during healing and at 1 week and 4 weeks

4. Subject Preference Questionnaire at month 6

5. Safety endpoints assessed by monitoring adverse events

Study Timeline

• Study Start: 2016-09-01
• Primary Completion: 2017-09-01
• Study Completion: 2017-12-01
• Study First Submitted: 2018-08-30
• Status Verified: 2018-09
• Study First Submitted QC: 2018-09-07
• Study First Posted: 2018-09-10
• Last Update Submitted: 2018-09-11
• Last Update Posted: 2018-09-13

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 6

Inclusion Criteria

1. Age must be at least 18 years but no more than 70 years.
2. There must be at least two non-adjacent teeth in contralateral sides of the same jaw with an insufficient zone (≤ 2mm) of Keratinized gingiva that requires soft tissue grafting. (1-4 teeth may be treated). If adjacent teeth require grafting, only a single chosen tooth at each site will act as the test or control site, all teeth will however get the same treatment).
3. The goal of grafting will not be root coverage.
4. Females must have a documented negative urine pregnancy test if they are of childbearing potential.
5. All subjects must have read, understood and signed an Informed Consent Form (approved by the institutional review board (IRB)).
6. All subjects must be willing and able to follow study instructions and protocols.

Exclusion Criteria

1. Any subject that has class III/IV recession with a shallow vestibule.
2. Any subject that has a vestibule depth of less than 7mm from the base of recession.
3. Any subjects with systemic conditions (i.e., diabetes mellitus, HIV, cancer, bone metabolic diseases) that typically precludes periodontal surgery.
4. Any subjects who are currently taking/received or have taken/received within two months prior to study entry, systemic corticosteroids, immunosupressive agents, radiation therapy, and/or chemotherapy which could compromise wound healing and preclude periodontal surgery. Any subjects taking intramuscular or intravenous bisphosphonates.
5. Any subjects with any acute lesions in the areas intended for surgery/or with a history of aphthous ulcers.
6. Any subjects who currently smoke.
7. Any subject with molar teeth that require treatment at the time of surgery.
8. Any subjects with teeth with Miller Grade =>2 mobility.
9. Any patients with known hypersensitivity to bovine collagen and/or iodine (shellfish allergy).
10. Any subjects who have received an investigational drug or biological/bioactive treatment within 30 days prior to study enrollment (medical or dental).
11. Any subjects previously treated with any allografts at the target site(s) or immediately adjacent teeth.
12. Any subjects who will not be able to complete the study per protocol.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Kerecis Oral™	Kerecis Oral™	The Fish Skin Graft will be is cut to shape of wound bed and placed directly on the appropriate prepared recipient wound bed. The Fish skin graft has the smooth side down and the scaly side facing out. The graft will be sutured in place at either coronal end with resorbable sutures and may be secured apically if needed. A surgical dressing (Coe-Pak® ) will be placed over the graft if needed.
Autogenous Free Gingival Graft	Free Gingival Graft	The recipient bed will be prepared at the appropriate sequential time as described. The graft will be harvested from the same side that the Free Gingival Graft is to be placed. A measurement will be made to determine the size of the donor tissue needed to be placed at the recipient site. Local anesthetic will be administered. The donor tissue will be harvested using the usual techniques. The width will be 5 mm and the length will match the predetermined measurement. The graft will be thinned as is usual practice. The harvested palatal graft will be centered on the study tooth and placed on the appropriately prepared recipient wound bed. The graft will be sutured with resorbable sutures on the mesial and distal aspects of the tooth. A surgical dressing (Coe-Pak® ) will be placed over the graft if needed.

Primary Outcome Measures

Name	Time	Method
Change in KT width from time of surgery to 3 months post-surgery	3 months	Increase in KT Width in MM

Secondary Outcome Measures

Name	Time	Method
Subject completed discomfort questionaire	3 months	Standard questionare
Bleeding on probing	3 months	Y/N
Papillary height and widht	3 months	mm
Probing depth	3 months	mm
Horizontal recession	3 months	mm