title: The coronally advanced flap in combination with platelet-rich fibrin (PRF) and enamel matrix derivative in the treatment of gingival recession: a comparative study.
abstract: OBJECTIVE
  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 (CAF) and to compare it with the use of an enamel matrix derivative (EMD) in combination with a coronally advanced flap in gingival recession treatment.
  
  
  METHODS
  20 split-mouth cases of maxillary anterior teeth or bicuspids presenting with Miller Class I or II gingival recession were treated with a CAF combined with a platelet-rich fibrin membrane (PRF group) or with EMD (EMD group) placed under a CAF. The following parameters were measured at baseline and at 12 months post treatment: gingival recession (GR), apicocoronal width of the keratinized tissue (WKT), and probing depth (PD).
  
  
  RESULTS
  Complete rot coverage in the PRF group was 65% (13 out of 20 recessions) and 60% in the EMD group (12 out of 20 recessions). GR was 4.10 ± 1.05 mm in the PRF group and 3.90 ± 1.00 mm in the EMD group at baseline, and 1.05 ± 0.45 mm in the PRF group and 1.15 ± 0.65 mm in the EMD group at 12 months. The difference observed between the tow groups at 12 months was statistically significant. Average root coverage was 70.5% in the EMD group and 72.1% in the PRF group. WKT was 1.30 ± 0.56 mm in the EMD group and 1.45 ± 0.86 mm in the PRF group at baseline, and 1.90 ± 0.81 mm in the EMD group and 1.62 ± 0.28 mm in the PRF group at 12 months. The difference observed between the two groups at 12 months was not statistically significant. Twelve-month changes in PD were not significantly different between the two groups. The pain intensity was statistically different between the two groups. The pain intensity was statistically different between groups for the first 5 days, favoring the PRF group.
  
  
  CONCLUSIONS
  The present study did not succeed in demonstrating any clinical advantage of the use of PRF compared to EMD in the coverage of gingival recession with the CAF procedure. The EMD group showed a higher success rate in increasing WKT than did the PRF group.
authors.affiliation: School of Dentistry, Department of Periodontics, University of Belgrade, Republic of Serbia. drsashaj@gmail.com
authors.forename: Sasha
authors.initials: S
authors.lastname: Jankovic
authors.forename: Zoran
authors.initials: Z
authors.lastname: Aleksic
authors.forename: Iva
authors.initials: I
authors.lastname: Milinkovic
authors.forename: Bozidar
authors.initials: B
authors.lastname: Dimitrijevic
mesh_terms: D000328:Adult; D001641:Bicuspid; D001792:Blood Platelets / Q000502:physiology*; D002614:Chelating Agents / Q000627:therapeutic use; D003481:Cuspid; D003746:Dental Enamel Proteins / Q000627:therapeutic use*; D004492:Edetic Acid / Q000627:therapeutic use; D005260:Female; D005337:Fibrin / Q000627:therapeutic use*; D005500:Follow-Up Studies; D005881:Gingiva / Q000473:pathology; D005888:Gingival Pocket / Q000473:pathology / Q000601:surgery; D005889:Gingival Recession / Q000145:classification / Q000473:pathology / Q000601:surgery*; D006801:Humans; D007180:Incisor; D008297:Male; D008437:Maxilla; D008875:Middle Aged; D010147:Pain Measurement; D010149:Postoperative Pain / Q000209:etiology; D013524:Surgical Flaps; D014092:Tooth Root / Q000187:drug effects / Q000473:pathology / Q000601:surgery; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D002614:Chelating Agents; D003746:Dental Enamel Proteins; C109069:enamel matrix proteins; D005337:Fibrin; D004492:Edetic Acid