[Subperiosteal implantology. Analysis of a complex case]

The absence of occlusal and functional trauma of prothesis upon the subperiosteal supports, gives the maximun state of quiet to the implants. The stability of implants prevents the pathology of outwards exposures of the sub-structure. In fact, a balance is created between the defensive barrier and the inflammatory charge of plaque. The absence of outwards exposures of the implants prevents their loss. Prothesis is therefore the key for the stability of the subperiosteal implants and for their duration in time.