Abstract
In this study, we compare the quality of zirconia cores manufactured using CAD/CAM systems by evaluating their marginal gap and internal fit. The surface of each sample was magnified to 300x and they were all compared. Statistical analysis was performed using SPSS Win 21.0 after establishing internal gaps of 0 mm, 5mm, 10mm, and 20mm for the Upcera and Cameleon zirconia, the total number of 80 abutments were compared in a graph showing the mean and standard deviation for each sample. The internal gap measurements of each sample were analysed using a one-way ANOVA and then a Scheffe post-hoc test.
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