if you really want to get a "specialist" perspective on the subject give some consideration to consulting a maxillofacial surgeon:
What is Maxillofacial Surgery?
When my wife had a thinning of the jaw bone issue to deal with that is the type specialist we consulted with and had do the bone build up and install the implants.
Then referred back to our regular dental care providers who do support the use of such specialists.
btk