[Primary accuracy of fit of composite inlays produced according to the indirect method]

The primary accuracy of fit of three composite inlay systems was evaluated comparatively. Control inlays were made of a phantom metal. In the proximal-cervical surfaces the resulting median widths of the open margins showing luting agent were as follows: EOS (74.1 microns) greater than Ful-Fil (59.5 microns) greater than Brilliant (43.13 microns) greater than Phantom metal (18.6 microns). Even though, under clinical conditions, composite inlays are attached by means of adhesives, the primary accuracy of fit achieved should be comparable to that of cast restorations, because the long-term stability of the material used for fasting the inlays cannot be warranted.