My son at 16 had a cyst that 'ate' his jaw bone, and the malfactual doctor made a hole in the back of his mouth, and the bone grew back. It did it again when he was 26 and he again took out the cyst, and the jawbone grew back over time.. He did say that if it broke or cracked they would have to do a bone graft!Take a piece from his hip and graft into his jawbone. He doesn't have any teeth on that side in the back.