Connective tissue graft with injectable platelet rich fibrin for treatment of RT1 gingival recession by tunnel technique: a randomized clinical and immunohistochemical study.

VEGF A & TGF β1 measured in arbitrary units (AU): Both growth factors showed highly significant scores in the CTG immersed in i-PRF analyzed in the CTG + i-PRF group, compared to the CTG alone from the CTG group ( P -value < 0.001), with large effect sizes for both growth factors suggesting a substantial magnitude of difference in growth factors expression between groups ( Table 5 ).

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