caries experience increased with decreasing socioeconomic status in both fluoride and non-fluoride communities , but this effect was only significant between ses groups ( 1 & 2 ) and ( 3 & 4 ) in the fluoridated community ( p less than 0.05 ) , and between ses groups ( 3 & 4 ) and ( 5 & 6 ) in non-fluoride communities ( p less than 0.01 ) .
C0011334
caries
C0016327
fluoride