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- W1967214968 abstract "The presence of interconnected macro pores is important in tissue engineering scaffolds for guided tissue regeneration. This study reports in vivo biological performance of interconnected macro porous tricalcium phosphate (TCP) scaffolds due to the addition of SrO and MgO as dopants in TCP. We have used direct three dimensional printing (3DP) technology for scaffold fabrication followed by microwave sintering. Mechanical strength was evaluated for scaffolds with 500 μm, 750 μm, and 1000 μm interconnected designed pore sizes. Maximum compressive strength of 12.01 ± 1.56 MPa was achieved for Sr–Mg doped scaffold with 500 μm interconnected designed pore size. In vivo biological performance of the microwave sintered pure TCP and Sr–Mg doped TCP scaffolds was assessed by implanting 350 μm designed interconnected macro porous scaffolds in rat distal femoral defect. Sintered pore size of these 3D printed scaffolds were 311 ± 5.9 μm and 245 ± 7.5 μm for pure and SrO–MgO doped TCP scaffolds, respectively. These 3D printed scaffolds possessed multiscale porosity, i.e., 3D interconnected designed macro pores along with intrinsic micro pores. Histomorphology and histomorphometric analysis revealed a significant increase in osteoid like new bone formation, and accelerated mineralization inside SrO and MgO doped 3D printed TCP scaffolds as compared to pure TCP scaffolds. An increase in osteocalcin and type I collagen level was also observed in rat blood serum with SrO and MgO doped TCP scaffolds compared to pure TCP scaffolds. Our results show that these 3D printed SrO and MgO doped TCP scaffolds with multiscale porosity contributed to early healing through accelerated osteogenesis." @default.
- W1967214968 created "2016-06-24" @default.
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- W1967214968 date "2013-01-01" @default.
- W1967214968 modified "2023-10-07" @default.
- W1967214968 title "3D printed tricalcium phosphate bone tissue engineering scaffolds: effect of SrO and MgO doping on in vivo osteogenesis in a rat distal femoral defect model" @default.
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- W1967214968 doi "https://doi.org/10.1039/c3bm60132c" @default.
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