Three months ago i had a front tooth extracted and cadaver bone put into the socket i preparation for an implant. Today i returned and the surgeon cut open my gum to insert the titanium rod only to say there was not adequate bone to support it. He said i would need a second graft preferrably of my own bone in order to support an implant. Is this common? I dont want to go thru this again if for some reason my bone does not grow adequately. Does anyone have advice or a simklar story? I am a 54 year old female. No health issues S far as i know.