Streptococcus mutans 9 nonhuman Article 7 human 7 controlled study 6 dental caries 6 Humans 4 bacterial growth 4 bacterial strain 4 genetics 4 Biofilms 3 Dental Caries 3 bacterial genome 3 bacterium culture 3 biofilm 3 female 3 isolation and purification 3 microbiology 3 minimum inhibitory concentration 3 zone of inhibition 3 Bacterial Proteins 2 Zinc 2 antibacterial activity 2 bacitracin 2 bacterial count 2 bacterial protein 2 bacterial virulence 2 child 2 colony forming unit 2 gene cluster 2