[Clinical wear of posterior composites].

In our days, Posterior Composites are in the way to replace the traditional and well established materials, such as the amalgam, from the region of the posterior teeth. As time passed however, the first problems connected with these materials were soon to appear. If composites must be used in posterior teeth for occlusal bearing fillings, wear is an important consideration and stands as one of the main problems concerning these materials with serious clinical consequences for the restoration as well as for the occlusion. It is difficult to give an answer to the question concerning the resistance or the behavior of the Posterior Composites to the wear mechanisms. There is no doubt that with the continuous improvement of the Posterior Composites there is also an improvement in the degree of wear. Therefore the purpose of this bibliographical review is to examine the phenomenon of wear and the mechanisms which cause it. We will deal mainly with the clinical study of this phenomenon, while we will also try to explain the behavior from the viewpoint of the wear of the various types of Posterior Composites which are in use today.