Implant primary stability and occlusion

In this chapter, we have focused on the primary implant stability not only from a biomechanical bone-implant perspective but also taking into account the neuromotor functions that could generate occlusal dynamic, asymmetric, and extra-axial loads.From the biomechanical bone-implant perspective, a microcomputed tomography image-based approach combined with the finite element method has been used to investigate the effect of the drill size on the biomechanics stability of the dental implant technique.In the case of neuromotor functions, to achieve a complete clinical evaluation of mastication, an in-depth neurophysiopathological assessment of masticatory muscle control has been described through the trigeminal electrophysiological approach.In conclusion, the implant-prosthetic primary stability is a biomechanical result in a "complex system" in which the direct components can coexist, such as the bone-implant relationship (press-fit phenomenon), and indirect components such as the occlusal loads are determined by the neuromuscular forces where the symmetry and synchronicity of the occlusal contacts are determined.