we use puros (cortical or cancellous depending on when the site is going to be opened up again) with a collaplug, and sometimes cover it with cyanoacrylate for rigidity, but healing looks better without the cyano. if all the walls are intact after the extraction, the socket should regenerate on its own. there's an oral surgeon, anthony sclar, that calls this the bio-col technique. there's a lot of literature out there that doesn't support socket grafting at all (lots of perio literature:lindhe, cardaropoli, araujo,etc....these studies (all good histological studies show that the site is going to heal how it's going to heal and it doesn't matter what you put in the socket). there are also lots of studies that show you don't get true osseointegration around implants with these allograft materials; only dead bone and fibrous encapsulation along the implant interface. that being said there are many studies that show that implants are clinically stable over many years when they were first grafted with allograft (froum, wallace etc.). all this stuff is debatable.
as far as bone harvesting goes there is the MX which i haven't tried, the safescrapper from 3i, and hartzell and sons have a cortical bone harvester which is similar to the safescraper. the safescraper is single use, the hartzell is metal and has replacable blades...probably get 15 uses for a $50 blade. it's probably easier in private practice to use these rather than take a trephine core from the ascending ramus etc. and then mill it. i'm perio and i generally do small bone grafts. oral surgeons do much larger bone grafts and i'm not sure if you'd get enough bone this way? obviously the calvarium is way out of our scope, but it's a cool site for cortical shavings.
