Analysis of implant/abutment marginal fitting

The success rate of osseointegrated implants is reported to be above 90%. Despite of the knowledge of the mechanisms of osseointegration, some faults still occur at implants systems. Recent researches assign those faults mainly to patient’s prosthetic rehabilitation. The misfit at abutment-implant interface and the missing of a passive adaptation between the prosthesis and the abutment can lead prosthesis components, abutment screw or implants to fracture. This misfit can also generate a inadequate load distribution to marginal bone, bacterial plaque accumulation and even though, a complete loss of osseo integration. The origin of the loss of displacement of the prosthesis is a complex process, involving factors as: implant material properties, implant design, conical degree, machining accuracy of the components, fatigue, fluid and bacterial microleakage, masticatory functions and others. Considering the importance of a higher longevity to the osseointegrated implants and the necessity to obtain the best adjustment that is possible at the abutment-implant interface, this research will perform a literature review about the perfect adjustment needed at abutment-implant interface, yours biomechanical, functional, biological and clinical implications and also will study the different methods to analyze this interface.