id	keyword
bjos-8657258	brackets
bjos-8657258	self
bjos-8657258	ligating
bjos-8657258	frictional
bjos-8657258	archwires
bjos-8657258	force
bjos-8657258	nickel
bjos-8657258	copper
bjos-8657258	titanium
bjos-8657258	doi
bjos-8657258	steel