Subepithelial connective tissue graft (SCTG) has greater predictability for root coverage and causes minimal discomfort to patient. Although donor site heals with primary intention causing less scar tissue, in some different harvesting procedures primary flap closure may not be achieved due to nature of thick palatal tissues. Some potential complications may occur at donor site such as: necrosis of graft and palatal site, pain, excessive hemorrhage, protracted discomfort, donor site infection and in some cases donor site paresthesia. Platelet rich fibrin (PRF) is a platelet concentrate obtained by a simple procedure that does not require biochemical blood involvement.Based on the known biological effects of PRF, the aim of this study is to evaluate the PRF in the management of soft tissue donor sites in term of bleeding and pain sensation, and to observe the changes in tissue healing after a subepithelial connective tissue graft procedure at palatal donor site.
Inclusion Criteria: * who needed connective tissue graft for treating gingival recessions were included Exclusion Criteria: * Patients with systemic disorders (immunologic diseases, uncontrolled diabetes mellitus, ongoing chemotherapy or radiotherapy), * smoking, * nausea * pregnancy/lactation