 Biphasic Bone Graft Material BGM is a resorbable inorganic bone forming material in granular form of plant origin derived from red marine algae. The chemical composition of this interconnected porous biological product is similar to the inorganic part of the human bone. It is a composition of 20 hydroxyapatite HA and 80 β-tricalciumphosphate ß-TCP. Due to the high tricalcium- phosphate content of the product it resorbs significantly faster than pure hydroxyapatite. The biphasic BGM is biocompatible and osteoconductive. The selection of the two grain sizes is dependent on the defect. 