bacterial count human 13 Article 12 Colony Count, Microbial 12 Humans 9 nonhuman 9 controlled study 8 microbiology 8 chemistry 6 drug effect 6 male 6 Streptococcus mutans 5 priority journal 5 Animals 4 Biofilms 4 Male 4 animal 4 antiinfective agent 4 bacterial growth 4 biofilm 4 comparative study 4 female 4 Saliva 3 adult 3 antibacterial activity 3 biological marker 3 child 3 clinical article 3 colony forming unit 3 growth, development and aging 3