Advancing Frontiers in Bone Bioprinting

Adv Healthc Mater. 2019 Apr;8(7):e1801048. doi: 10.1002/adhm.201801048. Epub 2019 Feb 8.

Abstract

Three-dimensional (3D) bioprinting of cell-laden biomaterials is used to fabricate constructs that can mimic the structure of native tissues. The main techniques used for 3D bioprinting include microextrusion, inkjet, and laser-assisted bioprinting. Bioinks used for bone bioprinting include hydrogels loaded with bioactive ceramics, cells, and growth factors. In this review, a critical overview of the recent literature on various types of bioinks used for bone bioprinting is presented. Major challenges, such as the vascularity, clinically relevant size, and mechanical properties of 3D printed structures, that need to be addressed to successfully use the technology in clinical settings, are discussed. Emerging approaches to solve these problems are reviewed, and future strategies to design customized 3D printed structures are proposed.

Keywords: 3D bioprinting; bioinks; bone defects; tissue engineering.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Biocompatible Materials / chemistry
  • Bioprinting / methods*
  • Bone and Bones / physiology*
  • Humans
  • Hydrogels / chemistry
  • Mesenchymal Stem Cells / cytology
  • Mesenchymal Stem Cells / metabolism
  • Osteogenesis
  • Printing, Three-Dimensional
  • Tissue Engineering

Substances

  • Biocompatible Materials
  • Hydrogels