Avances en Periodoncia e Implantología Oral
versión impresa ISSN 1699-6585
MATEOS, L. et al. Inserción de implantes dentales en la apófisis pterigoides: Una alternativa en el tratamiento rehabilitador del maxilar posterior atrófico. Avances en Periodoncia [online]. 2002, vol.14, n.1, pp.37-45. ISSN 1699-6585.
There is a high failure rate in implants placed in the posterior atrophic maxilla. That also occurs with those placed in bone type IV (thin cortical bone around poor density trabecular bone). Nevertheless, there is a higher predictability when placing implants in the pterigoid plate. These implants can help to the stability of the prosthetic system when we are treating this kind of clinic situations. The aim of this article is to review the procedure of implant placement in the pterigoid plate. We develop the applied anatomy concepts in this area, and a surgical and prosthetic protocol for this special approach as well. The surgical protocol includes the cortical anchorage of the implant into the pterigoid plate. To achieve this goal the fixture must be placed within an occlusal plane angulation, in such a way as make contact with the three bones: the maxilla, the palatine bone, and the pterigoid plate of the sphenoid bone. The prosthetic protocol also includes some variations. For example, we must take the impression directly from the implant, instead of taking it from the abutment. These changes improve the biornechanic conditions of the implants.
Palabras clave : Dental implants; pterigoid plate; atrophic maxilla.