My father had all of his pulled (from necessity) and is having them replaced with implants. It’s a very expensive and time consuming process, involving minor preliminary surgeries. I know someone else who had this done and regretted it, several of the implants kept coming out and the replacement procedure was painful and expensive. But it can be done.
I worked at behind the scenes at a series of offices that specialized in implants and full mouth replacements. The people that love them have a lot of money and don't mind going back to the dentist frequently to fix issues. The industry keeps it hush because its such a huge profit center.
