Total Graft Failure and Teeth in Day

Dana from Florida asks us:

My wife has been undergoing treatment to
place dental implants in her entire upper mouth. She had bone grafts in the back
of her mouth 18 months ago to place bone while she still had front her
front teeth.

8 months ago she had her front upper teeth removed and that
area was grafted also. The periodontist used bovine in both procedures
with a pcp mix (I believe).

However, recent CAT Scan shows total failure of the
graft in the rear and success in the front. The doctor wants to place dental implants
in the front and use a fixed denture. He wants to try grafts in the rear
again at a later date. The doctors blames the failure of the graft on smoking.

We then went to see an eminent prosthodontist in Philadelphia. He says he can
fix this in a day.

The Periodontist in Florida totally disagrees. He says micro movement of the
dental implants (teeth in a day procedure) combined with the failure of the grafts and smoking will not work. The Prosthodontist in Philadelphia says it will work and
Periodontist in Florida is using old techniques and being overly cautious.

What do we do? Who is right here? Thanks for any advice?