8/7/2023 0 Comments Cerec ac bluecam![]() Greater mean marginal gaps were measured for crystallized lithium disilicate copings. The overall mean difference in marginal gap between the hybrid ceramic and crystallized lithium disilicate copings was statistically significant (p < 0.01). Data were analyzed using paired t-test and Kruskal-Wallis test. For lithium disilicate copings the measurements for marginal gap were made before and after crystallization firing. A total of 60 measurements were made per specimen. Image analysis software was used to measure the marginal gaps in μm at 15 randomly selected points on each of the four surfaces. Four areas were imaged on each coping (buccal, distal, lingual, mesial). A Macroview Microscope (14×) was used for direct viewing of the marginal gap. The copings were seated on the metal die using a pressure clamp with a uniform pressure of 5.5 lbs. ![]() Design and milling were accomplished by one operator. The design was used to fabricate 15 lithium disilicate and 15 hybrid ceramic copings. The coping was designed using CEREC 3 software. To evaluate the marginal fit of CAD/CAM copings milled from hybrid ceramic (Vita Enamic) blocks and lithium disilicate (IPS e.max CAD) blocks, and to evaluate the effect of crystallization firing on the marginal fit of lithium disilicate copings.Ī standardized metal die with a 1-mm-wide shoulder finish line was imaged using the CEREC AC Bluecam.
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