The aim of this split-mouth clinical study, covering a 6 month period, is to compare the results obtained from Leucocyte and Platelet Rich Fibrin Membrane (L-PRF) and Connective Tissue Grafting (CTG) in the treatment of class 1 Miller gingival recessions in a patient with thick gingival biotype. The results show that the use of L-PRF membrane provides partial coverage of the recession, as well as lower subjective patient discomfort when compared with CTG. However, CTG provides a higher percentage of root coverage and better aesthetic results than the L-PRF membrane after a period of 6 months.