The Evaluation Clinical Results of Coronally Advanced Flap With Platelet Rich Fibrin

Inclusion Criteria: * Patients had at two quadrants, adjacent Miller Class I and at least 2 mm or deeper recessions * Full mouth plaque score 20% and Full mouth bleeding on probing 10% * no active periodontal disease, * involving incisors, canines and premolars, * age ≥ 18 years Exclusion Criteria: * Patients with general diseases which could affect healing process, * smokers * Patients had undergone periodontal surgery during the pervious 24 months on the involved sites, * pregnant or breastfeeding women * endodontic lesions or non-detectable cemento-enamel junctions at experimental teeth