[Study on a new type of apatite/wollastonite porous bioactive glass-ceramic].
A novel glass-ceramic has been derived from sol-gel process. In this study XRD and FTIR analysis confirmed that the main crystalline phases of the material were hydroxyapatite/fluoroapatite [Ca10(PO4)6(OH,F)] and beta-wollastonite[beta-CaSiO3]; SEM examination showed that the microstructure contained many micro pores of 2-3 microm. After pore-forming, the material possessed good macro porous structure: the size of macro pores was 300-400 microm in diameter, and pores interconnected each other. Bioactivity of the material was preliminarily evaluated in the simulate body fluid. SEM observation revealed that a lot of apatite granules had been formed on the surface of the material after soaking within 7 days. Result shows that the novel sol-gel derived apatite-wollastonite-containing glass-ceramic has good bioactivity. Porous materials have suitable microstructure as well as macrostructure, which make it an excellent material to be used as bone-repairing materials and bone tissue engineering carrier materials.
Yang
Weizhong
W
College of Material Science and Engineering, Sichuan University, Chengdu 610065, China. mailywz@sohu.com
Zhou
Dali
D
Yin
Guangfu
G
Chen
Huaiqing
H
Xiao
Bin
B
Zhang
Yun
Y
D001031:Apatites / Q000138:chemical synthesis / Q000737:chemistry*; D001672:Biocompatible Materials / Q000737:chemistry*; D018786:Bone Substitutes / Q000737:chemistry*; D002516:Ceramics / Q000138:chemical synthesis / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D016348:Osseointegration / Q000502:physiology*; D010012:Osteogenesis / Q000502:physiology; D016062:Porosity; D012824:Silicic Acid / Q000138:chemical synthesis / Q000737:chemistry*
D001031:Apatites; D001672:Biocompatible Materials; D018786:Bone Substitutes; C077777:apatite-wollastonite-containing glass ceramic; D012824:Silicic Acid