id	keyword
bjos-8641744	oral
bjos-8641744	group
bjos-8641744	health
bjos-8641744	dental
bjos-8641744	subjects
bjos-8641744	knowledge
bjos-8641744	years
bjos-8641744	age
bjos-8641744	caries
bjos-8641744	respondents
bjos-8641744	study
bjos-8641744	practice
bjos-8641744	hygiene