“…[ 66 , 71 , 75 ] Clinically, PRF and L‐PRF have been extensively applied to periodontal regeneration, alone or in combination with other regenerative materials, with PRF particularly favoring soft tissue over hard tissue regeneration. [ 70 , 72 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 , 98 , 99 , 100 , 101 , 102 , 103 , 104 , 105 , 106 , 107 ] In a randomized clinical trial on 3‐wall intra‐bony defects, Sharma et al. found that PRF combined with open flap debridement (OFD) yields significantly better results than OFD alone for probing pocket depth reduction (PRF + OFD: 4.55 ± 1.87 mm; OFD: 3.21 ± 1.64 mm), clinical attachment level gain (PRF + OFD: 3.31 ± 1.76 mm; OFD: 2.77 ± 1.44 mm) and percentage bone fill (PRF + OFD: 48.26% ± 5.72%; OFD: 1.80% ± 1.56%).…”