Dental caries in urban and rural primary and middle school students in Anhui province during 2005-2014

Objective To determine the prevalence and trends of dental caries among primary and middle school students in Anhui province,and to compare possible differences between urban and rural areas during 2005-2014.Methods Data of 8 582 Han primary and secondary school students aged 7,9,12 and 14 years came from Arnhui Provincial Constitution and Health Survey in 2005,2010 and 2014.DMF rate was analyzed to determine prevalence of dental caries and caries loss supplement changes.Differences between groups were significant usingX2 test.Results In 2014,total caries prevalence was 50.8%.Prevalence rate of decayed,missing and filled deciduous teeth was 78.2%,16.8% and 5.0% respectively.Total prevalence rate of deciduous caries showed significant differences in urban and rural areas (X2 =24.635,P<0.01).In the year of 2005,2010 and 2014,dmf rates were 36.5%,48.1% and 0.8%,respectively,with rural boys and girls showed increasing trend(X2=25.079,20.673,respectively,both P<0.01).Conclusion The prevalence of dental caries among primary and middle school students is high in Anhui province.School,family and the relevant departments should pay attention to oral health.