Abstract
Purpose: Compared relative translucency of IPS e.max CAD,Vita Suprinity,Lava Zirconia,Cercon Zirconia,Zenostar and upcera Zirconia, to provide a reference for the clinical aesthetic choice. Method: Relative translucency were calculated from the luminous reflectance (Y) of the specimens with a black (Yb) and a white backing (Yw) to give Yb/Yw with Minolta CR-321.One-way analysis of variance and Tukey’s multiple comparison test were used to analyze the data (P<0.05). Results: Relative translucency of control group was 0.577-0.843,while experimental group was from 0.798(IPS e.max CAD) to 0.947(upcera Zirconia),there were significantly different between the groups. The relative translucency of the six systems are as follows: IPS e.max CAD >Vita Suprinity >Lava Zirconia >Cercon Zirconia >Zenostar >upcera Zirconia. Conclusion: There were significantly different between the six groups, for patients with anterior tooth areas restoration and high aesthetic requirements, IPS e.max CAD and Vita Suprinity are recommended; For patients with poor transmittance of adjacent teeth, and the abutments are dark which need to be covered can choose Lava Zirconia and Cercon Zirconia; For low transparency like posterior areas and severe tetracycline teeth, upcera Zirconia and Zenostar ceramic blocks may be considered.
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