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• W3100232185 abstract "Spatial dimension of pores and interconnection in macroporous scaffolds is of particular importance in facilitating endogenous cell migration and bone tissue ingrowth. However, it is still a challenge to widely tune structure parameters of scaffolds by conventional methods because of inevitable pore geometrical deformation and poor pore interconnectivity. Here, the long-term in vivo biological performances of nonstoichiometric bioceramic scaffolds with different pore dimensions were assessed in critical-size femoral bone defect model. The 6% Mg-substituted wollastonite (CSi-Mg6) powders were prepared via wet-chemical precipitation and the scaffolds elaborately printed by ceramic stereolithography, displaying designed constant pore strut and tailorable pore height (200, 320, 450, 600 μm), were investigated thoroughly in the bone regeneration process. Together with detailed structural stability and mechanical properties were collaboratively outlined. Both μCT and histological analyses indicated that bone tissue ingrowth was retarded in 200 μm scaffolds in the whole stage (2–16 weeks) but the 320 μm scaffolds showed appreciable bone tissue in the center of porous constructs at 6–10 weeks and matured bone tissue were uniformly invaded in the whole pore networks at 16 weeks. Interestingly, the neo-tissue ingrowth was facilitated in the 450 μm and 600 μm scaffolds after 2 weeks and higher extent of bone regeneration and remodeling at the later stage. These new findings provide critical information on how engineered porous architecture impact bone regeneration in vivo. Simultaneously, this study shows important implications for optimizing the porous scaffolds design by advanced additive manufacture technique to match the clinical translation with high performance." @default.
• W3100232185 created "2020-11-23" @default.
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• W3100232185 date "2021-05-01" @default.
• W3100232185 modified "2023-10-11" @default.
• W3100232185 title "Bone tissue regeneration: The role of finely tuned pore architecture of bioactive scaffolds before clinical translation" @default.
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• W3100232185 doi "https://doi.org/10.1016/j.bioactmat.2020.11.003" @default.
• W3100232185 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7653208" @default.
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• W3100232185 hasPublicationYear "2021" @default.
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