Isi İle Preslenen Farkli Tam Serami̇k Kronlarin Marji̇nal Uyumlarinin i̇n Vi̇tro Olarak Değerlendi̇ri̇lmesi̇

Abstract

The aim of this in vitro study was to compare the marginal fit of 3 different heat-pressed allceramic crown systems (Creapress, IPS Empress and Finesse) both staining and layering techniques and porcelain-fused-to-metal restorations (PFM) utilizing with the silicone replica technique and an image analysis system. A total of 70 crowns were prepared for 7 groups (n=10) on metal dies, representing the maxillary right central incisor. Measurements of marginal fit were performed at 2 points for each crown using the silicone replica technique and an image analysis system. One-way analysis of variance and paired t test were used to compare data (a=0.05).The average marginal opening of the tested groups ranged from 32.4 ± 13.3 to 52.6 ± 14.8 µm. Analysis revealed that there were no significant differences in the mean marginal opening among the groups (p > 0.05). The marginal fits of crowns are not influenced by different heat-pressed all-ceramic systems. The marginal openings of all tested groups were less than the clinically acceptable limit of 120µm.