Platelet-Rich Fibrin in the Treatment of Multiple Gingival Recessions

Study Overview
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Brief Summary
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The main objective of this study was to evaluate the clinical effectiveness of platelet-rich fibrin membrane used in combination with a coronally advanced flap and to compare it with the use of a subepitelial connective tissue graft in combination with a coronally advanced flap in Miller class I-II bilateral gingival recession treatment

Detailed Description
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Purpose The main objective of this study was to evaluate the clinical effectiveness of platelet-rich fibrin (PRF) in combination with modified coronally advanced flap (MCAF) in the treatment of multiple gingival recessions. Furthermore the second aim of the present study was to compare plastic periodontal surgical procedure, with PRF membrane and connective tissue graft, by a randomized splitmouth controlled study. Clinical effectiveness of platelet-rich fibrin (PRF) in combination with modified coronally advanced flap (MCAF) as measured by Clinical measurements. Material and Methods Twenty patients with multiple gingival recession defects (Miller I, II) participated in this split-mouth trial. Sixty defects received either MCAF+PRF (test) or MCAF with subepithelial connective tissue graft (SCTG) (control). Gingival recession depth (RD), gingival recession width (RW), keratinized tissue width (KTW), recession area (RA), probing depth (PD), clinical attachment level (CAL) and gingival thickness (GT) were evaluated at baseline and 6 months. Additionally post-surgery patient satisfaction and pain status were measured by comparing visual analogue scale (VAS) scores. Clinical measurements were taken at starting point and 6 months postoperatively. The measurements comprised an assessment of probing depth (PD),clinical attachment level (CAL) and gingival recession parameters including recession depth (RD), recession width (RW), keratinized tissue width (KTW) and gingival thickness (GT) were assessed by a calibrated examiner (E. Ö.). PD, CAL, RD, RW and KTW values were recorded by a Williams probe graduated in 1-mm increments and rounded up to the nearest millimeter (Hu Friedy, Chicago, IL, USA). To standardize the clinical measurements acrylic stents were prepared on patients' casts. The following measurements were recorded at the mid-buccal point of the teeth at baseline and6 months after surgery. GT was evaluated using endodontic reamer attached to a rubber stopper inserted perpendicularly into the gingival tissue 3 mm below the gingival margin under local anesthesia, and then the thickness was measured to the nearest 0.1 mm using a caliper.RD was measured from the CEJ to the gingival margin, RW was measured tangentially at the mid-facial CEJ and RA was calculated as the area within the contour of denuded root. KTW recorded as the distance from the mucogingival junction to the gingival margin. Duplicate measurements were made for RD, RW, RA and KTW with an interval of 24 hours and the average value of two measurements was used for the assessment. The postoperative pain was evaluated with a visual analog score (VAS).

Official Title
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Platelet Rich Fibrin Against Connective Tissue Graft in Treatment of Gingival Recessions

Conditions
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Gingival Recessions

Intervention / Treatment
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* Procedure: test groups
* Procedure: Control groups


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: non smoking, similar bilateral Miller Class I or II20 localized gingival recessions at least ≥3 mm, located on incisors, canines or premolars on both jaws, identifiable cemento-enamel junction (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 on the involved sites, sufficient palatal donor tissue at least ≥2.5 mm thickness for the indicated SCTG Exclusion Criteria: Patients in a pregnancy or lactation period or with self-reported history of antibiotic medication within 6 months Molar, mobile or fully restorated teeth

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Test groups.<br>This clinical study was designed as a split-mouth, randomized, controlled clinical trial. Bilateral gingival recession defects were randomly assigned to the test (CAF+PRF) or the control (CAF+SCTG) groups with the use of computer-generated randomization table after assessment of clinical parameters at baseline. | Procedure: test groups<br>* At the test sites, the previously prepared PRF was positioned over the recession defects, the coronal margin of the PRF was placed at the CEJ<br>* Other names: PRF groups;|
| Active Comparator: Control groups.<br>This clinical study was designed as a split-mouth, randomized, controlled clinical trial. Bilateral gingival recession defects were randomly assigned to the test (CAF+PRF) or the control (CAF+SCTG) groups with the use of computer-generated randomization table after assessment of clinical parameters at baseline. | Procedure: Control groups<br>* Split-full-split thickness flap incisions were performed in a coronal-apical direction. The papillae adjacent to the involved tooth were de-epithelialized to create a connective tissue bed. The gingival flap was repositioned without tension, with its margin located on the enamel, on the test and control sides. It was held in that position with 5-0 resoble sutures<br>* Other names: Connective tissue graft groups;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Complete root coverage | Change from baseline in gingival recession will be assessed at 1, 3 and 6 months. | 6 months | 
| Gingival recession depth | Change from baseline in gingival recession will be assessed at 6 months | 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 | 
| Pain scores | Pain level evaluated on visual analog scale | first week after operations | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Platelet rich fibrin, Gingival Recession