The Free Gingival Graft Fixation to the Bone: Author's Protocols of Sergey Edranov is organized by OHI-S. This course has been approved with a maximum of 2.5 CE Credits. Sergey Edranov's technique for fixing free gingival grafts to the bone will enable you to achieve a reliable and effective attachment of the graft to the bone, which is a key aspect of successful implant treatment!