Healing of Intrabony Defects Following Treatment With PRF or EMD

Objective: To evaluate clinically the long-term results following treatment of deep intrabony defects with either platelet-rich fibrin gel (PRF) or an enamel matrix derivative (EMD). Methods: Twenty six patients diagnosed with advanced chronic periodontitis, and each of whom displaying one deep intrabony defect were randomly treated with open flap debridement and with either PRF (test) or EMD (Emdogain, Straumann, Basel, Switzerland) (control). The clinical outcomes were evaluated at baseline, at six months and three years after treatment. The primary outcome variable was the clinical attachment level (CAL).