Abstract
Low-intensity pulsed ultrasound (LIPUS) assisted bone repair is confirmed effective in clinic. Here, a 3D-printed composite poly(DL-lactic acid)/mesoporous bioactive glass scaffold was constructed for particular use in LIPUS-assisted bone tissue engineering. The scaffolds contain dimethyloxallyl glycine (DMOG) loaded microbubbles in pores, which can be released after implanting via LIPUS stimulation. Local DMOG concentrations are modulated through ultrasound power and processing time. The rat bone marrow-derived mesenchymal stem cells (rBMSCs) on these scaffolds with ultrasound treatment show improved proliferation and early osteogenic differentiation.
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