How is it possible to lose bone?
When your dentist tells you that you have no more bones, he should instead say that you have no more cancellous bone. Indeed, bone is made up of 2 parts - the cancellous part and the cortical part, also called hard bone or basal bone.
It is the spongy part which undergoes the main atrophy. The cortical part, on the other hand, is more mineralized and remains significantly present in very specific areas: Under the nasal area, around the sinuses and in the level of wisdom teeth.