Abstract
An organic-inorganic hybrid material, epoxy-SiO2, was prepared by incorporating epoxy structure units covalently into a SiO2 glass network via the sol-gel approach. The precursor was obtained by the reaction of diglycidyl ether of bisphenol A (DGEBA) with 3-aminopropyl trimethoxysilane (APTS). The precursor was then hydrolyzed and co-condensated with tetraethyl orthosilicate (TEOS) in tetrahydrofuran (THF) at room temperature to yield epoxy-SiO2 hybrid sol-gel material having a 50 wt % SiO2 content. Thermal properties of the hybrid material were characterized by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The hybrid sol-gel material epoxy-SiO2 was the solid, powder component of bone cement. The liquid component contains bis-phenol-A glycidyl methacrylate (Bis-GMA), triethyleneglycol dimethacrylate (TEGDMA), and methyl methacrylate (MMA) with 25, 55, and 20 vol %, respectively. We discuss the comparison between the new epoxy-SiO2 bone cement and the commercial Simplex® P bone cement. Mechanical properties such as Young's modulus, compressive strength, hardness, and impact strength of the new epoxy-SiO 2 bone cement exceeded those of Simplex® P bone cement. The tensile and bending strengths of the new epoxy-SiO2 bone cement were approximately the same as those of Simplex® P bone cement. In order to evaluate the biocompatibility of the new bone cement, an MTT test and optical microscopy were conducted in cell culture. Results indicated that the new epoxy-SiO2 bone cement exhibits very low cytotoxicity compared with Simplex® P bone cement.
Original language | English |
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Pages (from-to) | 138-146 |
Number of pages | 9 |
Journal | Journal of Biomedical Materials Research - Part A |
Volume | 64 |
Issue number | 1 |
DOIs | |
State | Published - 01 01 2003 |