3D Printed Porous Methacrylate/Silica Hybrid Scaffold for Bone Substitution.
3D Printed Porous Methacrylate/Silica Hybrid Scaffold for Bone Substitution.
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用于骨替代的3D打印多孔甲基丙烯酸酯/二氧化硅混合支架。
DOI:
10.1002/adhm.202100117
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发表时间:
2021-06
影响因子:
10
通讯作者:
Jones JR
中科院分区:
文献类型:
--
作者:
Chung JJ;Yoo J;Sum BST;Li S;Lee S;Kim TH;Li Z;Stevens MM;Georgiou TK;Jung Y;Jones JR
Inorganic–organic hybrid biomaterials made with star polymer poly(methyl methacrylate-co-3-(trimethoxysilyl)propyl methacrylate) and silica, which show promising mechanical properties, are 3D printed as bone substitutes for the first time, by direct ink writing of the sol. Three different inorganic:organic ratios of poly(methyl methacrylate-co-3-(trimethoxysilyl)propyl methacrylate)-star-SiO2 hybrid inks are printed with pore channels in the range of 100-200 μm. Mechanical properties of the 3D printed scaffolds fall within the range of trabecular bone, and MC3T3 pre-osteoblast cells are able to adhere to the scaffolds in vitro, regardless of their compositions. Osteogenic and angiogenic properties of the hybrid scaffolds are shown using a rat calvarial defect model. Hybrid scaffolds with 40:60 inorganic:organic composition are able to instigate new vascularized bone formation within its pore channels and polarize macrophages toward M2 phenotype. 3D printing inorganic-organic hybrids with sophisticated polymer structure opens up possibilities to produce novel bone graft materials.
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