A lot of people become shocked when they hear that they may need a bone graft for dental implants. This is completely natural, and simply means that the teeth have been missing for so long that enough of the alveolus has been absorbed so that there is not adequate space for a dental implant. Bone grafts are just what they sound; they are an augmentation of the jawbone in a given quadrant of the mouth. There are many kinds of bone augmentation therapies, but we will be talking about synthetic bone grafts only.