[Study on thermal treatment schedule of leucite microcrystallization to reinforce dental glass ceramics].
OBJECTIVE
To explore the thermal treatment schedule of leucite microcrystallization to reinforce dental glass ceramics.


METHODS
After component analysis and selection, the raw material were treated by different temperature schedules. The products were analyzed by polaring microscope and X-ray diffractometer to determine the appropriate thermal treatment schedule.


RESULTS
The temperature of melting, nuclearing and crystalizing was 1,600 degrees C, 1,200 degrees C and 1,500 degrees C. Leucite microcrystals dispersed in the glass matrix evenly and the size of leucite particle was about 0.8 micro m.


CONCLUSIONS
Leucite can be microcrystalized according to an appropriate thermal treatment schedule.
Zhang
Biao
B
Comprehensive Dental Department, School of Stomatology, Wuhan University, Wuhan, 430079, China.
Qian
Fa-tang
FT
Duan
Xing-long
XL
Wu
Bo-lin
BL
D000538:Aluminum Silicates / Q000737:chemistry*; D003460:Crystallization; D003776:Dental Porcelain / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D006358:Hot Temperature
D000538:Aluminum Silicates; D003776:Dental Porcelain; C078519:leucite