Child 5 Humans 5 Oral Health child health 5 human 5 statistics and numerical data 4 Adolescent 3 Child, Preschool 3 Female 3 Male 3 School Health Services 3 adolescent 3 female 3 male 3 preschool child 3 school health service 3 toothbrushing 3 Cross-Sectional Studies 2 DMF Index 2 DMF index 2 Dental Caries 2 Dental Health Surveys 2 Dental caries 2 Gingival Diseases 2 Global Health 2 Periodontal Index 2 Socioeconomic Factors 2 Toothbrushing 2 cross-sectional study 2