Abstract
This study aims to investigate the difference on relative translucency of four systems of dental all-ceramic zirconia materials which are all at clinical required thickness.All-ceramic zirconia specimens containing Zenostar,Lava,Cercon and Upcera are fabricated into discs with 10mm in diameter and 0.5±0.01mm in thickness.The relative translucency of specimens are measured with color difference meter,and the measurements are conducted statistical analysis with software SPSS13.Experimental results display that their relative translucency are significantly different,which decrease in sequence of Zenostar,Lava,Cercon and Upcera zirconia.Cercon zirconia with certain translucency could be used for relatively opaque posterior tooth.As for discolored teeth,Upcera Zirconia may be advisable.
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