although the children reside in a fluoride-deficient community ( f less than or equal to 0.1 ppm ) , the baseline dental caries prevalence of a subsample of the group ( 11 to 13 years old ) was similar to that of comparably aged children who were residents of a fluoridated community and from approximately a third to a half lower than that of other fluoride-deficient communities .
C0011334
dental caries
C0016327
fluoride