id	keyword
bjos-8656598	rotary
bjos-8656598	fatigue
bjos-8656598	cyclic
bjos-8656598	files
bjos-8656598	instruments
bjos-8656598	canals
bjos-8656598	endod
bjos-8656598	niti
bjos-8656598	root
bjos-8656598	resistance
bjos-8656598	titanium