[Study on infiltration glass for machinable-infiltrated-ceramic and on its colorants].
In order to develop tinted infiltration glass and its colorants, which can make the ceramic have good spectrum transmittance, color space, color stability and be suitable for clinical use, we selected the best prescription and confirm the ingredient and content of the colorants. Molten glass was prepared in Al2O3 crucible by heating the components to 1420 degrees C for 2 hours. The refractive index and thermal stability of the glass were investigated. The refractive index of the MIC infiltration glass was 1.5969(587.6 nm, nd). It was close to the index of aluminous matrix 1.759(546.07 nm, ne), which increased the spectrum transmittance of MIC. The thermal expansion coefficient of the glass was 7.565 microns/m/degree C, which was compatible with the thermal expansion coefficient of aluminous matrix(8.214 microns/m/degree C). This study proved that the tinted infiltration glass has good color stability, spectrum transmittance, and thermal expansion properties.
Yang
Xiaoyu
X
West China College of Stomatology, Sichuan University, Chengdu 610041.
Liao
Yunmao
Y
Xian
Suqin
S
Liang
Xing
X
Wei
Wei
W
Wan
Meihua
M
D000538:Aluminum Silicates; D004396:Coloring Agents; D003460:Crystallization; D003776:Dental Porcelain; D004548:Elasticity; D005898:Glass; D006244:Hardness
D000538:Aluminum Silicates; D004396:Coloring Agents; D003776:Dental Porcelain