Exploration of New Electroacupuncture Needle Material

Table 8

Results of safety and economic evaluation according to the material (x: corrosion was not observed. o: corrosion was observed).

Material	Thickness	Corrosion	Viability (MTT assay)	Viability (stain test)	Cost effectiveness
Ti-6Al-4V	0.20 mm	x	90.20%	High	Low
PB	0.25 mm	o	50.58%	Low	High
Ni co	0.20 mm	o	77.83%	Low	Normal
Ni co	0.25 mm	o	85.04%	Low	Normal
Ni co	0.30 mm	o	81.39%	Low	Normal
SS 316	0.20 mm	x	95.99%	High	Normal
SS 316	0.25 mm	x	96.52%	High	Normal
SS 316	0.30 mm	x	95.90%	High	Normal