Child 9 Cross-Sectional Studies Dental Caries Humans Oral Health 9 child cross-sectional study dental caries 9 health human 9 Female 8 Male 8 female 8 male 8 Child, Preschool 5 Socioeconomic Factors 5 oral health 5 preschool child 5 socioeconomics 5 Adolescent 4 Surveys and Questionnaires 4 adolescent 4 psychology 4 questionnaire 4 statistics and numerical data 4 DMF Index 3 DMF index 3 Dental caries 3 Oral Hygiene 3 Prevalence 3