Coloration of mica glass ceramic for use in dental CAD/CAM system.
- Author:
Ying SUN
1
;
Zhong-yi WANG
;
Jie-mo TIAN
;
Xiao-gang CAO
Author Information
- Publication Type:Journal Article
- MeSH: Aluminum Silicates; chemistry; Color; Computer-Aided Design; Crowns; Dental Porcelain; chemistry; Glass; chemistry; Molar
- From: Chinese Journal of Stomatology 2003;38(2):137-139
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVEAn intrinsically colored machinable glass-ceramic containing tetrasilicic fluormica as the predominant crystal phase was studied, which was used in molar crown in dental CAD/CAM system.
METHODSOrthogonal design analysis was used to select appropriate base formula, coloration and heat treatment process.
RESULTSFactors influencing the color appearance of mica glass ceramic were nucleation agent and the ratio of Mg(2+) to K(+) in base formula; Cerium oxide (CeO(2)) was used as the main coloration; The preferred heat treatment was 650 degrees C for 1 h and 1,000 degrees C or 1,050 degrees C for 3 h - 4 h.
CONCLUSIONSThis mica glass-ceramic could provide 4 to 5 color appearance for dental use, it showed excellent machinability which was eminently suitable for use in dental CAD/CAM system.
