The marginal fit of cemented galvanoceramic crowns

Galvanoceramic restorations were constructed for five extracted teeth. Following cementation, the margins were photographed (magnification X 33) and the prints mounted to produce a continuous image of the entire margin. Cement film thickness measurements were made at 0.1-mm intervals. The five cemented restorations were then embedded in resin, sectioned longitudinally, and examined under a microscope (X 125). The mean gap at the restoration margin, as measured by each technique, was 18 microns and 19 microns, respectively. These results were consistent with the clinical impressions of cemented galvanoceramic restorations completed at the University of Tübingen.