ha sucks, it's much worse than implants, this according to dr. z.
I have spoken with world class surgeons. They told me that ha is safe, well tested, proven, permanent and does not erode the underlying bone. Arteries and new bone grow through the material.
Dr. Z? Ask a world class surgeon about him. I can tell you for sure! Nobody knows Dr. Z. He is never at congresses or somewhere. He has "zero" pubblications. And please bear in mind: At the end of the day each surgeon is also a business man!