[Oral hygiene training in Mexican children (I). Comparison between Mexican children and American children].
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003729:Dental Care; D005260:Female; D006267:Health Education, Dental; D006801:Humans; D008297:Male; D008800:Mexico; D009034:Mother-Child Relations; D009910:Oral Hygiene; D014481:United States