A bone pore or void filling composition is described. The composition includes a mixture of: a type I collagen and/or a type I collagen-glycosaminoglycan coprecipitate； a blend of polyethylene glycol polymers having different molecular weights； a bone growth stimulator； and bioactive glass. A kit for containing the bone pore or void filling composition, and methods for using the composition to fill a bone pore or void are also described.
