Which of the following bone graft materials is synthetic (alloplastic)?

An alloplast is a synthetic (man-made) graft material (e.g., hydroxyapatite, beta-tricalcium phosphate, bioactive glass).Other options: Allograft = same species (cadaveric human); xenograft = another species (e.g., bovine); isograft = genetically identical individual (twin); none are synthetic.Key exam takeaway: Alloplast = synthetic graft; allograft = human donor; xenograft = animal; autograft = patient's own bone.