Platelet Rich Fibrin in the Treatment of Localized Gingival Recessions

Platelet Rich Fibrin in the Treatment of Localized Gingival Recessions: Split-mouth Randomized Clinical Trial

The present study deals with treatment of localized gingival recessions. The hypothesis of this study is that platelet rich fibrin can be used an alternative to subepithelial connective tissue graft in the coverage of denuded roots. If the platelet rich fibrin will prove to be similarly effective as subepithelial connective tissue graft, it will be possible to avoid a donor site and to decrease patient discomfort after operation.

Study Overview

• Status: Completed
• Conditions: Gingival Recession
• Intervention / Treatment: Procedure: Subepithelial connective tissue graft; Procedure: Platelet Rich Fibrin

Detailed Description

The main objective of this split-mouth, randomized, controlled clinical trial was to compare the clinical efficacy of platelet rich fibrin (PRF) in combination with the coronally advanced flap (CAF) to the use of subepithelial connective tissue graft (SCTG) in combination with CAF in the treatment of localized gingival recessions.

Primary outcome variables were percentage of complete root coverage and change in gingival recession expressed as recession reduction in millimeters at follow-up visits. The secondary outcome variables included keratinized tissue and gingival thickness gain.

Sample size has been estimated in 22 subjects per treatment groups. Random allocation of the treatment sites to test (CAF+ PRF) and control (CAF + SCTG) groups will be performed using a computerized selection of random numbers for allocation of the study groups.

Periodontal parameters including plaque index (25) (PI), gingival index (26) (GI), probing depth (PD), clinical attachment level (CAL), and gingival recession parameters including recession depth (RD), recession width (RW), recession area (RA), keratinized tissue width (KTW), gingival thickness (GT) were assessed by a calibrated examiner. At baseline and 1, 3 and 6 months, RD, RW, RA, KTW were evaluated by means of both clinical and digital assessment. GI and PI were recorded at baseline and 1, 3 and 6 months, however PD, CAL, and GT were evaluated at baseline and 6 months. PD and CAL were recorded by a Williams probe accurate to the nearest 0.5 mm. GT was evaluated at baseline and 6 months using #15 endodontic reamer attached to a rubber stopper inserted perpendicularly into the gingival tissue 2 mm below the gingival margin; thickness was measured to the nearest 0.1 mm using a caliper.

Clinical images obtained at baseline and 1, 3 and 6 months after surgery from each treatment site and digitized in a computer image analysis system. Using a 4-mm length wire was used to check the reproducibility of the pictures. RD was measured from the cement-enamel junction (CEJ) to the gingival margin, RW was measured tangentially at the mid-facial CEJ, RA was calculated as the area within the contour of denuded root. KTW recorded as the distance from the mucogingival junction (MGJ) to the gingival margin. Duplicate measurements were made for RD, RW, RA and KTW. Percent root coverage and complete root coverage was calculated RA according to the following standard formulae.

Follow-up of subjects will be 6 months.

• Study Type: Interventional
• Enrollment (Actual): 22
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Turkey
  • İzmir, Turkey, 35100
    • Ege University School of Dentistry Department of Periodontology

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Similar bilateral or contralateral Miller Class I or II localized gingival recessions at least ≥ 2 mm located on incisors, canines or premolars on both jaws
• Identifiable CEJ
• Age ≥ 18 years
• Presence of tooth vitality and absence of restorations and superficial caries in the area to be treated
• No periodontal surgical treatment in the previous 24 months on the involved sites
• Gingival thickness at least ≥ 0.8 mm for the recession area
• Sufficient palatal donor tissue for the indicated SCTG.

Exclusion Criteria:

• Smoking
• Patients with a pregnancy or lactation period or self-reported history of antibiotic medication within three months
• Molar, mobile or teeth with crown or filling were also excluded.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Single Group Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Subepithelial connective tissue graft; Soft tissue harvested from palatum of the subjects.	Procedure: Subepithelial connective tissue graft
Experimental: Platelet Rich Fibrin; Autogenous platelet and leukocyte fibrin material was obtained from blood.	Procedure: Platelet Rich Fibrin

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Complete root coverage	Change from baseline in percentage of complete root coverage at 1, 3 and 6 months.	1, 3 and 6 months
Gingival recession depth	Change from baseline in gingival recession will be assessed at 1, 3 and 6 months.	1, 3 and 6 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Keratinized tissue width	Change from baseline in keratinized tissue at 6 months.	6 months
Gingival thickness	Change from baseline in gingival thickness at 6 months	6 months

Collaborators and Investigators

• Sponsor: Ege University
• Investigators: Principal Investigator: Gülnihal Eren, PhD, Ege University School of Dentistry

Study record dates

Study Major Dates

• Study Start: January 1, 2010
• Primary Completion (Actual): November 1, 2011
• Study Completion (Actual): November 1, 2011

Study Registration Dates

• First Submitted: February 12, 2013
• First Submitted That Met QC Criteria: February 14, 2013
• First Posted (Estimate): February 15, 2013

Study Record Updates

• Last Update Posted (Estimate): August 15, 2013
• Last Update Submitted That Met QC Criteria: August 14, 2013
• Last Verified: August 1, 2013

More Information

Terms related to this study

• Keywords: gingival recession; root coverage; connective tissue; microsurgery; fibrin; case-control studies
• Additional Relevant MeSH Terms: Stomatognathic Diseases; Periodontal Diseases; Mouth Diseases; Gingival Diseases; Periodontal Atrophy; Gingival Recession
• Other Study ID Numbers: 2010-Dis-002