Syntoss Bio+DSI Syntoss Bio is a surgical dental absorbable membrane used in oral and maxillofacial surgery, in the regeneration of minor osseous defects, extraction socket closure, and implantation. This membrane acts as a biological and mechanical barrier against the invasion of cells not involved in bone formation. DSI Syntoss Bio is a type II collagen membrane whose interfiber structure was restored by cross linking of polypeptide chains. This membrane is