Indispensable factor for the success of an immediate loading protocol: primary stability.
Taking in consideration the first definition of osseointegration as a microscopical bone-to-implant contact and later as a direct and functional union between a loaded implant and the surrounding bone (BrÃ¥nemark et al. 1977), it could be considered a newly placed implant as an osseointegrated implant if it is taken in consideration the first definition (very different from the reality), being this first contact between the bone and the implant the responsible for the primary stability.Primary stability is being gradually substituted by the secondary stability. This process corresponds to the bone remodeling that begins almost immediately after surgery, where the "primary bone" is replaced by "secondary bone" (initially woven bone that gradually be replaced by marrow bone) which allows primary stability to be replaced by secondary stability, that really represents osseointegration as a process where exists “implant stability in native bone (primary bone contact) with the remodeling and new bone formation (bone secondary contact) and its maintenance in the bone-to-implant interface" (Berglundh et al. 2003; Abrahamsson et al. 2004; Cochran 2006).
