Clinically and radiographically, the allograft site looks great, but it is not. The particles remain indefinitely and the bone is never normal, even after loading. On the other hand, when a site is grafted with a βTCP, it will eventually resorb.
At any given time frame, some βTCP particles may remain in the site until it is loaded. the primary motivator to βTCP resorption is the remodeling process that happens after the bone is loaded with an implant. Ultimately, resorption occurs.
So while a dentist may think that because βTCP granules are visible, they must never resorb and never produce normal bone, the opposite is true. Conversely, while a dentist may assume that because a site grafted with an allograft has the appearance to be healthy bone, it is actually not case.