Design Strategies and Biomimetic Approaches for Calcium Phosphate Scaffolds in Bone Tissue Regeneration

Federico Pupilli, Andrea Ruffini, Massimiliano Dapporto, Marta Tavoni, Anna Tampieri, Simone Sprio

Research output: Contribution to journalReview articlepeer-review

28 Scopus citations

Abstract

Bone is a complex biologic tissue, which is extremely relevant for various physiological functions, in addition to movement, organ protection, and weight bearing. The repair of critical size bone defects is a still unmet clinical need, and over the past decades, material scientists have been expending efforts to find effective technological solutions, based on the use of scaffolds. In this context, biomimetics which is intended as the ability of a scaffold to reproduce compositional and structural features of the host tissues, is increasingly considered as a guide for this purpose. However, the achievement of implants that mimic the very complex bone composition, multi-scale structure, and mechanics is still an open challenge. Indeed, despite the fact that calcium phosphates are widely recognized as elective biomaterials to fabricate regenerative bone scaffolds, their processing into 3D devices with suitable cell-instructing features is still prevented by insurmountable drawbacks. With respect to biomaterials science, new approaches maybe conceived to gain ground and promise for a substantial leap forward in this field. The present review provides an overview of physicochemical and structural features of bone tissue that are responsible for its biologic behavior. Moreover, relevant and recent technological approaches, also inspired by natural processes and structures, are described, which can be considered as a leverage for future development of next generation bioactive medical devices.

Original languageEnglish (US)
Article number112
JournalBiomimetics
Volume7
Issue number3
DOIs
StatePublished - Aug 13 2022

Keywords

  • 3D scaffolds
  • biomimetics
  • biomineralization
  • biomorphic transformations
  • bone regeneration
  • hydroxyapatite
  • ion doping

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Biomaterials
  • Biochemistry
  • Biomedical Engineering
  • Molecular Medicine

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