[Evaluation of the effect of health education program of oral hygiene at primary schools].
Ma
S
S
D002648:Child; D003774:Dental Plaque Index; D005260:Female; D006267:Health Education, Dental / Q000379:methods*; D006801:Humans; D008297:Male; D009910:Oral Hygiene; D009911:Oral Hygiene Index; D012572:School Health Services; D014099:Toothbrushing