Transformation of the Biological Paradigm in Bone Regeneration: An Integrative Review

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Bone tissue is among the most commonly transplanted tissues worldwide. The treatment of critical-sized bone defects remains a significant challenge, as there is currently no universally accepted experimental model or therapeutic standard. Recent advances in fundamental cell biology are driving a paradigm shift in approaches to bone regeneration, highlighting the transformative potential of biofabrication technologies that integrate tissue engineering with personalized regenerative strategies. Three-dimensional (3D) bioprinting technology enables precise control over the architecture and spatial distribution of cellular and biologically active components, facilitating the creation of complex, personalized bone constructs. Central to this process are bioinks and biomaterials that mimic the extracellular matrix (ECM) and provide an optimal microenvironment for cellular function. Despite the substantial body of accumulated data, a comprehensive theoretical framework for functional bone biofabrication has not yet been fully established, emphasizing both the challenges and the innovative potential of the field. This integrative review synthesizes current knowledge on bone biology-from embryogenesis and cell-matrix interactions to molecular and neural regulation-and links it to the opportunities offered by biofabrication. Particular attention is given to bioinks as mediators between c

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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