id	keyword
bjos-8640911	caries
bjos-8640911	health
bjos-8640911	oral
bjos-8640911	adolescents
bjos-8640911	study
bjos-8640911	schooling
bjos-8640911	brazil
bjos-8640911	disease
bjos-8640911	brazilian
bjos-8640911	pain
bjos-8640911	variables
bjos-8640911	nova