A survey on tooth caries at 5 primary schools of Hoa Binh province was performed. The prevalence of caries of 61.75% was concluded for milk teeth, 31.78% for permanent teeth. There were 2.4 teeth of caries for each school child. In minority ethnic children, this prevalence was higher than in Kinh ethnic children, this was related to the living habits and the tooth brushing practice.
Dental Caries ; Schools ; Epidemiology