Influence of Different Ceric Oxide and Ferric Oxide Content on the Color of Alumina-Glass-Composites Restoration

摘要

This study aims to investigate the effects of ceric oxide and ferric oxide on the color of alumina-glass-composite (AGC).Uncolored glass and colored glass powder with 4％ ceric oxide and 0.5％ ferric oxide were fabricated.Primary mixture powder were made by mixing the two colored glass powder with 0.lg interval,and then 81 kinds of colored mixture powder were gained by mixing uncolored powder with the primary mixture powder.Molten glass was infiltrated into presintered alumina blocks.The colored AGC and VITAPAN-3D-MASTER shade guide were measured with spectrophotometer.Experiment results showed that the Yxy value of VITAPAN-3D-MASTER shade guide distributed from (185,0.378,0.340) to (121,0.443,0.341) and the Yxy value of colored AGC distributed from (227,0.352,0.343) to (102,0.489,0.364).There were 37 kinds of samples in the color range of shade guide.The color range of 81 kinds of AGC covered that of the VITAPAN-3D-MASTER shade guide.