Study of Machinable Dental Glass Ceramics
Glass-ceramics are especially useful for the dental restorations because of their good biocompatibility, chemical stability, aesthetic, mechanical strength and wear resistance. The aim of this work was to obtain one mica glass-ceramic, which can be easily used for rapid machining into all-ceramic tooth with computer assisted design/computer assisted manufacture (CAD/CAM) devices. In the study, on the base of low melting machinable fluorosilicic mica glass ceramics, the effects of CeO2 and Fe2O3 in SiO2-B2O3-K2O-Na2O-Li2O-Al2O3-MgO-F system on color were studied. By orthogonal experimental design, the effects of crystallized parameters on the color, three point flexural strength and machinability of the glass ceramics were obtained, and the samples were analyzed by differential thermal analysis(DTA), X-ray diffraction (XRD) and scanning electron microscopy(SEM), respectively. Experimental results showed that the glass-ceramics with color close to the tooth can be obtained by adjusting the percentage of CeO2 and Fe2O3, and the glass-ceramics crystallized at 680℃ for 2h have excellent mechanical properties and machinability.
dental glass-ceramics colorants flezural strength microstructure machinability
Xin-Pei Ma Guang-Xin Li Zhi-Hao Jin Ji-hua Chen Mao-JuYang Yun-Jie Han
State Key Laboratory for Mechanical Behavior of Materials, Xian Jiaotong University, Xian 710049, Fourth Military Medical University, Xian 710032, P.R.China
国际会议
10th International Symposium on Eco-Materials Processing and Design(第10届国际生态材料加工与设计研讨会)
西安
英文
575-578
2009-01-13（万方平台首次上网日期，不代表论文的发表时间）