Table 1.

Application of polymer materials, applicable processing technology, advantages and disadvantages.

Polmer Type	Application	AM Technique	Advantages	Disadvantages	Ref
Chitin and chitosan	Bone repair	Extrusion Bioprinting	Osteogenic induction	Lack of mechanical strength	[74]
			Biocompatibility
Alginate	Bone repair	Extrusion Bioprinting	Biocompatibility	low cell adhesion and proliferation	[75]
			Improve polymer viscosity
Collagen	Bone repair	FDM	Similar to the natural extracellular environment	Weak mechanical properties	[75,76]
		Extrusion Bioprinting
		Inkjet Bioprinting		Fast degradation rate
		Laser-Assisted Bioprinting
Gelatin	Bone repair	Extrusion Bioprinting	Biocompatibility	Difficult to hot working	[35]
	Inkjet Bioprinting		Low antigenicity	Poor mechanical strength
HA	Bone repair	FDM	Cell support	Poor mechanical strength	[76]
			lubrication
Cellulose	Bone repair	Extrusion Bioprinting	low cost	Unable to melt	[35]
			High elastic	indissolvable
ABS	Bone repair	FDM	low cost	Unable to autoclave	[77]
	Bone model	SLA	Chemical resistance	Poor degradability
			Good workability
PLA	Bone repair	FDM	low cost	Poor tensile strength	[78,79,80]
	Bone replacement		Biocompatibility	Harmful metabolite
	Bone model		Degradable
PCL	Bone repair	FDM	low cost	Poor mechanical strength	[76,80]
		SLS	Degradable	Long degradation time
			High elastic
PC	Bone repair	FDM	high intensity	Easy to absorb moisture from the air	[81,82,83,84]
			Non-biotoxicity
			High tensile strength
PEEK	Bone replacement	FDM	Low water imbibition	Processing requires a higher temperature	[85,86]
			High temperature resistance
		SLS	high transmittance	biologically inert surface
			excellent mechanical properties
PP	Bone repair	FDM	Lower density	Lower rigidity	[87,88,89,90,91]
			Good workability
			Easy to curl
PA	Bone replacement	FDM	Biocompatibility	lack of shape stability	[92]
			Strong mechanical properties
		SLS	Wear Resistance
			Chemical stability