The aim of this study is to assess the oral health of the children of refugees and immigrants (“newcomers”). We also seek to understand the barriers to appropriate oral health care and use of dental services. Finally, we look into clinical and behavioural interventions for this population in North America. In general, children of newcomers exhibit poorer oral health compared with their non-newcomer peers. This population faces language, cultural and financial barriers that, consequently, limit their access to and use of dental services. Intervention programs, such as educational courses and counseling, targeting newcomer parents or their children are helpful in improving the oral health status of immigrant children. The disparity in dental caries between children of newcomers and their peers can be reduced by improving their parents’ literacy in the official language(s) and educating parents regarding good oral health practices. An appropriate oral health policy remains crucial for marginalized populations in general and newcomer children in particular.