Blood sample will be obtained from the patient, conveyed into a titanium tube and immediately centrifuged at 2700 rpm for 12 mins at room temperature using fixed angle centrifuge (PRF Process, Tangkula800-1, China). The fibrin clot will be collected and placed in the PRF compression device (PRF GRF box) and condensed to produce a uniform T-PRF membrane which will be inserted over the recession area and covered by the coronally advanced flap.

The distance from the base of the pocket to the most apical point on the gingival margin will be measured using a periodontal probe.

Distance from the cement-enamel junction to the base of the periodontal pocket will be measured using a periodontal probe

Recession width (W) measured at the widest point (it is the distance between the mesial gingival margin and the distal gingival margin of the tooth) using a periodontal probe

It will be measured from the cementoenamel junction to the Gingival Margin (GM), parallel to the long axis of the tooth starting from the most apical point of the recession using a William's graduated periodontal probe

Width of keratinized gingiva will be measured as the distance from the gingival margin to the mucogingival junction