[Dental health education for schoolchildren and its evaluation by visible plaque index and gingival bleeding index].
D002648:Child; D003753:Dental Health Surveys; D003774:Dental Plaque Index; D005884:Gingival Hemorrhage; D006267:Health Education, Dental; D006801:Humans; D006472:Oral Hemorrhage; D010512:Periodontal Index