Adolescent Adult 1 Esthetics, Dental 1 Female 1 Gingival Recession 1 Gingival recession 1 Humans 1 Male 1 Middle Aged 1 Platelet-Rich Fibrin 1 Severity of Illness Index 1 Surgical Flaps 1 Time Factors 1 Tooth Root 1 Treatment Outcome 1 Young Adult 1 adolescent 1 adult 1 classification 1 dental procedure 1 female 1 gingiva disease 1 human 1 male 1 middle aged 1 pedicled flap 1 periodontitis 1 platelet-derived growth factor 1 platelet-rich fibrin 1 severity of illness index 1