New compositions of bioactive glasses are proposed in the CaO-MgO-SiO2-Na2O-P2O5-CaF2 system. Mineralization tests with immersion of the investigated glasses in simulated body fluid (SBF) at 37A degrees C showed that the glasses favour the surface formation of hydroxyapatite (HA) from the early stages of the experiments. In the case of daily renewable SBF, monetite (CaHPO4) formation competed with the formation of HA. The influence of structural features of the glasses on their mineralization (bioactivity) performance is discussed. Preliminary in vitro experiments with osteoblasts' cell-cultures showed that the glasses are biocompatible and there is no evidence of toxicity. Sintering and devitrification studies of glass powder compacts were also performed. Glass-ceramics with attractive properties were obtained after heat treatment of the glasses at relatively low temperatures (up to 850A degrees C).
机构:
Univ Lille Nord France, Fac Med & Pharm, Lab Biomat Res, INSERM,U1008, F-59000 Lille, FranceUniv Valenciennes & Hainaut Cambresis, Lab Mat Ceram & Proc Associes EA2443, Zl Champ Abbesse, F-59600 Maubeuge, France
机构:
Chiang Mai Univ, Fac Sci, Dept Phys & Mat Sci, Chiang Mai 50200, Thailand
Chiang Mai Univ, Mat Sci Res Ctr, Fac Sci, Chiang Mai 50200, ThailandChiang Mai Univ, Fac Sci, Dept Phys & Mat Sci, Chiang Mai 50200, Thailand
Eitssayeam, Sukum
Tunkasiri, Tawee
论文数: 0引用数: 0
h-index: 0
机构:
Chiang Mai Univ, Mat Sci Res Ctr, Fac Sci, Chiang Mai 50200, ThailandChiang Mai Univ, Fac Sci, Dept Phys & Mat Sci, Chiang Mai 50200, Thailand
Tunkasiri, Tawee
Pengpat, Kamonpan
论文数: 0引用数: 0
h-index: 0
机构:
Chiang Mai Univ, Fac Sci, Dept Phys & Mat Sci, Chiang Mai 50200, Thailand
Chiang Mai Univ, Mat Sci Res Ctr, Fac Sci, Chiang Mai 50200, ThailandChiang Mai Univ, Fac Sci, Dept Phys & Mat Sci, Chiang Mai 50200, Thailand