Dental Plaque 6 Humans 6 Streptococcus mutans 6 human 6 microbiology 6 tooth plaque Saliva 4 dental caries 4 saliva 4 Dental Caries 3 Female 3 Male 3 female 3 isolation and purification 3 male 3 microflora 3 Adolescent 2 Article 2 Child, Preschool 2 DMF Index 2 DMF index 2 Dental caries 2 Microbiota 2 Streptococcus sanguinis 2 Streptococcus sanguis 2 adolescent 2 chemistry 2 controlled study 2 drug effect 2 microbiota 2