Biomechanics of the Brånemark system

A dental implant restoration defines a biomechanical structure comprising both biological tissue, the bone, and mechanical components, the implant and the suprastructure. The relation between the applied load from the prosthesis and the supporting capacity of implant and bone will effect the long term outcome of treatment. Therefore, the biomechanical aspect is an essential element of the treatment planning. Related principles have been evolved through theoretical models, laboratory investigations, animal studies and in vivo measurements. Recently a number of clinical studies referring to implant treatment in partially edentulous jaws have been presented, revealing new aspects. In this article, results from these studies are discussed and related to fundamental biomechanical principles for treatment planning.