Janus M, et al. - Researchers ought to determine how unaddressed dental needs (UDNs) influence developmental health among kindergarten children using the Early Development Instrument (EDI). From publicly-funded schools in Canada, they included 576,264 children (95.4% of eligible children) between 2010 and 2015; of these, 2,465 (0.4%) were reported to have UDNs by their teachers. Relative to children without UDNs, children with UDNs had 4.58 to 8.27 times higher odds of being vulnerable on any of the five developmental domains (physical health and well-being, social competence, emotional maturity, language and cognitive development, communication skills, and general knowledge). Findings thereby suggest the value of teacher-reported unmet dental needs in kindergarten children as a proxy for poor developmental health at school entry, and thus it may serve a marker for supporting both children’s oral health and early developmental needs.