RADIOPACITY OF ELASTOMERIC IMPRESSION MATERIALS

The purpose of this study was to measure and classify the radiopacity of various elastomeric impression materials available on the open mark et and to compare their appearance in radiographs of the oral tissues. In order to measure and classify their radiopacity, twenty-eight spec imens of various materials were placed and exposed on film together wi th an aluminium stepwedge. A dummy head was used to investigate the ra diographic density of the above specimens in comparison with that of s imulated oral tissues.