It usually takes at least 4 months and possibly as long as a year for a bone graft to be ready to support a dental implant
It depends on the source and location of the bone graft. Your own bone, an autogenous graft, works best and takes about 4 months to integrate. Bovine (cow) bone can take 6-12 months to heal. Bone in a sinus lift takes the longest, usually about 12 months, to support implants.