Nina T Dalgaard, Anja Bondebjerg, Rasmus Klokker, Bjørn C A Viinholt, Jens Dietrichson
Adult/child ratio and group size in early childhood education or care to promote the development of children aged 0-5 years: A systematic review
Campbell systematic reviews
aim study correlate different combinations manganese mn iron fe concentration drinking water prevalence dental caries primary permanent dentition among school children similar sociodemographic characteristics evros region northeastern greece divided four areas according combinations levels mn fe drinking water high mnhigh fe high mnlow fe low mnhigh fe low mnlow fe children similar socioeconomic background attending either first sixth grade primary permanent dentition respectively elementary schools clinically assessed caries three dentists caries defined use dmftdmft index questionnaire answered parents also analysed 573 children included caries prevalence high age groups 642 mean dmft 33 36 primary 607 mean dmft 23 25 permanent dentition respectively residence high mnlow fe area associated significant caries age groups 95 cis primary permanent dentition respectively 375 168837 p 0001 309 148644 p 0003 independently factors like sugar consumption brushing frequency prevalence caries high general associated combination high mnlow fe levels drinking water independently various sociodemographic factors