Patent ID: 7981972

Claim:
A synthetic bone graft comprising a glass composition comprising a silicate-based network former and a network modifier, wherein the glass composition includes zinc as either a network former or a network modifier, strontium as a network modifier, and calcium as an additional network modifier; and the glass composition comprises SiO 2 at a proportion in the range of 0.25 to 0.75 mole fraction and a corresponding proportion of a variation of calcium, strontium, and zinc in the range 0.75 to 0.25 mole fraction, in which: the strontium is present as SrO at a proportion in the range of 0.025 to 0.12 mole fraction; the calcium is present as CaO at a proportion in the range of 0.04 and 0.16 mole fraction; and the zinc is present as ZnO at a proportion making up the balance of the mole fraction and wherein the glass composition has a network connectivity in the range of 1 to 3.5.