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Oxygen-Generating Biomaterials for Translational Bone Regenerative Engineering

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AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c20715

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oxygen; biomaterials; peroxide; bone regeneration; tissue engineering

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Successful regeneration of critical-size bone defects remains a significant challenge in regenerative engineering. The use of oxygen-generating biomaterials can improve tissue growth and overcome the hypoxic regions in large matrices. This article reviews recent advances in oxygen-releasing and delivery methods for bone regenerative engineering.
Successful regeneration of critical-size defects remains one of the significant challenges in regenerative engineering. These large-scale bone defects are difficult to regenerate and are often reconstructed with matrices that do not provide adequate oxygen levels to stem cells involved in the regeneration process. Hypoxiainduced necrosis predominantly occurs in the center of large matrices since the host tissue's local vasculature fails to provide sufficient nutrients and oxygen. Indeed, utilizing oxygen-generating materials can overcome the central hypoxic region, induce tissue in-growth, and increase the quality of life for patients with extensive tissue damage. This article reviews recent advances in oxygen-generating biomaterials for translational bone regenerative engineering. We discussed different oxygen-releasing and delivery methods, fabrication methods for oxygen-releasing matrices, biology, oxygen's role in bone regeneration, and emerging new oxygen delivery methods that could potentially be used for bone regenerative engineering.

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