I was a former faculty member in orthodontics at a dental school so i have some dental background. when they do an implant, they either can use healed bone after an extraction or sometimes they use bone from an animal...implants were new when I left dentistry so I only know a little about them. But it takes bone a couple of months to regenerate and grow back (that's true even when moving teeth in orthodontics). How much bone was removed?

Glad to see you are going to a prosthodontist for treatment options. I'm not sure how much bone was removed. I'm going to guess too much for them to feel your jawbone is stable. Keep us posted.