This group randomized clinical trial will test if a community-based multimodal intervention will reduce the 2-year ECC incidence of children aged 0-5 living in public housing developments. The intervention combines evidence based components and a unique delivery setting (public housing). We hypothesize that the multimodal intervention comprised of oral health assessment and feedback, fluoride varnish application, and motivational interviewing delivered by Dental Health Advocates (trained public housing residents) can reduce incidence of ECC in 0-5 year olds compared with a control group that receives oral health assessment and feedback, fluoride varnish application, and written oral health education materials.