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Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in...
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Biological Compatibility Profile on Biomaterials for Bone Regeneration
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Calcium Phosphate-Based Biomaterials for Bone Repair.

Xiaodong Hou1,2, Lei Zhang1,3,4, Zifei Zhou1,3,4

  • 1Center for Orthopaedic Science and Translational Medicine, Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China.

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|October 24, 2022
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Calcium phosphate (CaP) biomaterials offer promising solutions for bone defect repair due to their bone-like properties. This review explores how CaP

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Area of Science:

  • Biomaterials Science
  • Orthopedic Engineering
  • Regenerative Medicine

Background:

  • Bone defects from trauma, tumors, or infections pose significant clinical challenges.
  • Calcium phosphates (CaPs) mimic bone's inorganic phase, making them ideal for bone defect repair.
  • CaP properties, including structure and morphology, dictate their biological performance.

Purpose of the Study:

  • To review the relationship between CaP physicochemical properties and their efficacy in bone regeneration.
  • To explore synthesis strategies and structure control for CaP biomaterials.
  • To elucidate the mechanisms by which CaPs promote osteogenesis.

Main Methods:

  • Literature review focusing on CaP biomaterials for bone regeneration.
  • Analysis of synthesis strategies and structure-property-biological performance relationships.
  • Examination of CaP interactions with biological systems to promote bone healing.

Main Results:

  • CaP biomaterials, particularly nanostructured and hierarchically structured forms, show excellent bone regeneration potential.
  • Physicochemical properties (species, size, morphology) significantly influence CaP biological performance.
  • CaPs are effective in drug/gene delivery and promoting osteogenesis.

Conclusions:

  • Understanding CaP structure-property-function relationships is crucial for developing advanced bone repair biomaterials.
  • CaP biomaterials offer versatile applications in bone regeneration and drug delivery.
  • This review provides insights for scientists and engineers in designing next-generation CaP-based bone repair solutions.