Marginal integrity is a major clinical problem in restorative dentistry. The aim of this study was to evaluate the applicability of an edge strength measurement device in an in vitro test to determine the force required to fracture flakes of material by a Vickers indentation at progressively increasing distances from an interface edge of bulk material.
Biomaterials Research Group, School of Dentistry and Photon Science Institute, The University of Manchester, Higher Cambridge Street, Manchester, UK. david.watts@manchester.ac.uk
