id	keyword
bjos-8676062	water
bjos-8676062	fluoride
bjos-8676062	public
bjos-8676062	fluoridation
bjos-8676062	supply
bjos-8676062	doi
bjos-8676062	samples
bjos-8676062	portuguese
bjos-8676062	brazil
bjos-8676062	health
bjos-8676062	concentration
bjos-8676062	oral
bjos-8676062	water fluoridation
bjos-8676062	water supply
bjos-8676062	teresina
bjos-8676062	control
bjos-8676062	caries