https://www.researchgate.net/publication/323627975

Lawrence Technological University

1) Hydrogels:
* Synthetic polymers which have the ability to swell.
* Especially used in drug delivery applications with less swelling controlled by factors such as polymer material, viscosity and shear stress.

2) Ceramic-based inks:
* High stiffness and provides a surface in bone tissue development.
* commonly used inks are Hydroxyapatite and Tricalcium phosphate which enhances the strength in scaffolds.

3) Polymer-based inks:
* Polylactic acid (PLA) and Acrylonitrile Butadiene  Styrene (ABS) are extensively used in 3d printing.
* Engineering applications, prototyping, assists in bone formation and regeneration.

4) Composite inks:
* Two major types hydrogels and polymer based inks enhances mechanical properties and bioactivity.
* Accelerates healing and primarily used in tissue engineering applications.

Note: Current bio inks has limited alteration in properties and i future it may applied to vast number of applications.

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