[Immediate implantation. Preservation of bone volume and osseous regeneration].

In recent years, much emphasis has been placed on the refinement and enhancement of prosthetic components and techniques in implant dentistry, while the surgical protocol has remained fairly constant. The evolution of the concept of the immediate placement of fixtures into extraction sites, along with the related concept of guided tissue regeneration, is a major advancement in the surgical field. It provides significant benefit to both patient and clinician in terms of the reduced treatment time and an enhanced prognosis related to biomechanics and aesthetics.