Biomechanics of the intact, prepared and restored tooth: some clinical implications.

The practice of restorative dentistry has changed for many and varied reasons. They include changes in the epidemiology of dental caries due to fluoridation, and availability of new equipment and techniques for cavity preparation and new or improved restorative materials. Changes driven by these 'new' materials frequently do not provide the benefits anticipated. In the context of this paper, it is argued that, regardless of restorative materials and techniques, the biomechanics of intact, prepared and restored teeth must be understood to attain a satisfactory clinical outcome.