id	keyword
bjos-8640936	teeth
bjos-8640936	lesion
bjos-8640936	intracanal
bjos-8640936	clinical
bjos-8640936	root
bjos-8640936	chx
bjos-8640936	oral
bjos-8640936	months
bjos-8640936	pulp
bjos-8640936	success
bjos-8640936	treatment