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. 2024 Feb 16;12(11):2720–2736. doi: 10.1039/d3tb02674d

Examples of bioactive composite scaffolds for bone regeneration.

Study Bioactive component Matrix component Wt% of Filler Fabrication method Key findings
Shuai, 202147 HAp PLLA, or PGA 10% 3D printing (SLS) HAp/PLLA/PGA scaffolds displayed tunable degradation and mechanical properties.
Xu, 201748 HAp or β-TCP PLGA 50% SCPL HAp/PLGA scaffolds exhibited higher strength and faster degradation; TCP/PLGA scaffolds improved bone regeneration in a rabbit model.
Cheng, 202149 β-TCP (with cucurbitacin B) PLGA 25% 3D printing (low temperature rapid prototyping) TCP/PLGA/Cur-B scaffolds increased bone regeneration and angiogenesis in a rat model.
Nyberg, 201750 HAp, β-TCP, DBM, or BO PCL 30% 3D printing (extrusion) DBM/PCL and BO/PCL scaffolds exhibited greater osteoinduction; PCL/HAp displayed higher compressive modulus.
Shuai, 202251 PDLA-grafted HAp (g-HAp) PDLA 0.5, 1, 2 or 4% 3D printing (SLS) g-HAp/PDLA scaffolds exhibited increased modulus and strength.
Sultan, 202252 45S5-BG PLA 5% TIPS and 3D printing (extrusion) 45S5-BG/PLA scaffolds exhibited increased strength.
Nitschke, 202353 45S5-BG PCL, PLLA 2.5 to 30% Modified SCPL 45S5-BG/SMP scaffolds exhibited faster degradation, and retained shape memory behavior.
Distler, 202054 45S5-BG PLA 1–10 wt% FDM 45S5-BG/PLA scaffolds exhibited decreased strength with increased BG wt%; triggered cellular osteogenesis.
Monfared, 202255 45S5-BG and β-TCP Gelatin, and PVA 35–40% (equal parts each) 3D printing (extrusion) 45S5-BG/TCP/Gelatin/PVA scaffolds exhibited increased compressive strength and faster degradation.
Han, 202356 BBG PCL 5–40% 3D printing (SLS) BBG/PCL scaffolds with 20 wt% BGG exhibited optimal mechanical properties, and promoting regeneration & integration in a rabbit model.
Hatton, 201957 ICIE16M-BG Alginate 50% Freeze-drying ICI16M-BG/alginate scaffolds exhibited increased strength.
Du, 201958 MBG SF, or PCL 80% 3D printing (extrusion) MBG/SF exhibited superior compressive strength, and greater heterotopic bone formation in a mouse model.
Qi, 201759 MBG and calcium sulfate PCL 70% 3D printing (extrusion) MBG/CS scaffolds exhibited superior osteogenesis of cultured human bone marrow mesenchymal stem cells (hBMSCs) and greater bone formation in a rat model.
Carrow, 201960 LAPONITE® PEOT/PBT 5, 10, or 15% 3D printing (extrusion) LAPONITE®/PEOT/PBT scaffolds exhibited decreased degradation rates versus copolymer-only scaffolds, as well as increased osteogenesis of hMSCs.
Wu, 202161 Eggshell microparticles (ESP) Gel–MA ESP combined with 5% prepolymer solution Casting/UV cure ESP/Gel–MA scaffolds exhibited superior osteogenesis of cultured MC3T3-E1 pre-osteoblasts versus Gel–MA-only scaffold, and greater bone formation in a rat model.
Huang, 202062 MWCNTs &/or nHAp PCL 0.75% MWCNT & 20% nHAp 3D printing (screw assisted extrusion) PCL/MWCNT/nHAp scaffolds exhibited increased modulus versus PCL-only scaffolds, and greater osteogensis of cultured hADSCs.