Um estudo multicêntrico de reabilitações mandibulares suportadas por implantes osseotite : um relato de 3 anos

lmplant-supported prostheses are a predictable treatment modality based on documented clinical research. Developments in the field of implant dentistry have involved the study of improved bone-to-implant contact (BIC) and the use of predictable surgical techniques and prosthetic treatments. Predictability issues are foremost in the patients decision to undergo implant supported prosthetic therapy. The restorative dentist, with his or her surgical colleagues, must adequately inform patients of the relative success rates of various implant systems and the prognosis that can be attached to each implant system and prosthetic treatment. The professional responsibility of obtaining a valid informed consent from a patient requires continuous efforts from practitioners to maintain their knowledge current about relevant clinical research and practice. Restorative dentists are obviously more preoccupied with implant failures occurring after the implant-supported prosthesis is delivered to the patient. Such implant losses entail not only possible surgical retreatments but also the remake and alteration of the prosthesis. In such cases, retreatment of lost implants incurs time and expense. Therefore, restorative dentists seek to increase the success rates of implant placements in theanterior mandible (93%) and the posterior mandible (reported as low as 79%).”
Research has demonstrated that successful osseointegration is correlated with implant design and surface modification. Increased surface roughness enhances mechanical interlocking between the macromolecules of the implant surface and the bone, which results in increased resistance to compression, tension and shear stress. Implant threads and micro-surface topography increase the host cellular and biomolecular components contact with the implant surface during osseointegration.” The respective BICs of different implant designs and surfaces have made use of both animal and human models. Human histomorphometric analysis