Presumably cadaver bone? (the jokes write themselves… That zombie bone would be destined to starve in my head, I fear ;)) But thanks for that description, I genuinely had no idea what the logistics were. How long does it usually take for that to happen, before they can place the implant base?
And, so what’s a sinus lift? That’s another term that was bandied about in discussing upper implants and my google-fu has refused to come up with any details of just what they do!